Release 2020.5.0

Previously it was only being set after RegisterTunnel.

RELEASE_NOTES

@@ -1,3 +1,59 @@
+2020.5.0
+- 2020-05-01 TUN-2943: Copy certutil from edge into cloudflared
+- 2020-05-05 TUN-2955: Fix connection and goroutine leaks when tunnel conection is terminated on error. Only unregister tunnels that had connected successfully. Close edge connection used to unregister the tunnel. Use buffered channels for error channels where receiver may quit early on context cancellation.
+- 2020-04-30 TUN-2940: Added delay parameter to stdin reconnect command.
+- 2020-04-27 TUN-2921: Rework address selection logic to avoid corner cases
+- 2020-04-28 TUN-2872: Exit with non-0 status code when the binary is updated so launchd will restart the service
+- 2020-04-13 AUTH-2587 add config watcher and reload logic for access client forwarder
+
+2020.4.0
+- 2020-04-10 TUN-2881: Parameterize response meta information header name in the generating function
+- 2020-04-11 TUN-2894: ResponseMetaHeader should be public
+- 2020-04-09 TUN-2880: Return metadata about source of the response from cloudflared
+- 2020-04-04 ARES-899: Fixes DoH client as system resolver. Fixes #91
+- 2020-03-31 AUTH-2394 added socks5 proxy
+- 2020-02-24 AUTH-2235 GetTokenIfExists now parses JWT payload for json expiry field to detect if the cached access token is expired
+
+2020.3.2
+- 2020-03-31 TUN-2854: Quick Reconnects should be an optional supported feature
+- 2020-03-30 TUN-2850: Tunnel stripping Cloudflare headers
+
+2020.3.1
+- 2020-03-27 TUN-2846: Trigger debug reconnects from stdin commands, not SIGUSR1
+
+2020.3.0
+- 2020-03-23 AUTH-2394 fixed header for websockets. Added TCP alias
+- 2020-03-10 TUN-2797: Fix panic in SetConnDigest by making mutexes values.
+- 2020-03-13 TUN-2807: cloudflared hello-world shouldn't assume it's my first tunnel
+- 2020-03-13 TUN-2756: Set connection digest after reconnect.
+- 2020-03-16 TUN-2812: Tunnel proxies and RPCs can share an edge address
+- 2020-03-18 TUN-2816: cloudflared metrics server should be more discoverable
+- 2020-03-19 TUN-2820: Serialized headers for Websockets
+- 2020-03-19 TUN-2819: cloudflared should close its connections when a signal is sent
+- 2020-03-19 TUN-2823: Bugfix. cloudflared would hang forever if error occurred.
+- 2020-03-10 TUN-2796: Implement HTTP2 CONTINUATION headers correctly
+- 2020-03-02 TUN-2779: update sample HTML pages
+- 2020-03-04 TUN-2785: Use reconnect token by default
+- 2020-03-05 TUN-2754: Add ConnDigest to cloudflared and its RPCs
+- 2020-03-06 TUN-2755: ReconnectTunnel RPC now transmits ConnectionDigest
+- 2020-03-06 TUN-2761: Use the new header management functions in cloudflared
+- 2020-03-06 TUN-2788: cloudflared should store one ConnDigest per HA connection
+- 2020-02-26 TUN-2767: Test for large headers
+- 2020-02-28 do not terminate tunnel if origin is not reachable on start-up (#177)
+- 2020-02-28 TUN-2776: Add header serialization feature in cloudflared
+- 2020-02-21 TUN-2748: Insecure randomness vulnerability in github.com/miekg/dns
+
+2020.2.1
+- 2020-02-20 TUN-2745: Rename existing header management functions
+- 2020-02-21 TUN-2746: Add the new header management functions
+- 2020-02-25 perf(cloudflared): reuse memory from buffer pool to get better throughput (#161)
+- 2020-02-25 Tweak HTTP host header. Fixes #107 (#168)
+- 2020-02-25 TUN-2765: Add list of features to tunnelrpc
+- 2020-02-19 TUN-2725: Specify in code that --edge is for internal testing only
+- 2020-02-19 TUN-2703: Muxer.Serve terminates when its context is Done
+- 2020-02-09 TUN-2717: Function to serialize/deserialize HTTP headers
+- 2020-02-05 TUN-2714: New edge discovery. Connections try to reconnect to the same edge IP.
+
 2020.2.0
 - 2020-01-30 TUN-2651: Fix panic in h2mux reader when a stream error is encountered
 - 2020-01-27 TUN-2645: Revert "TUN-2645: Turn on reconnect tokens"

buffer/pool.go

@@ -0,0 +1,29 @@
+package buffer
+
+import (
+	"sync"
+)
+
+type Pool struct {
+	// A Pool must not be copied after first use.
+	// https://golang.org/pkg/sync/#Pool
+	buffers sync.Pool
+}
+
+func NewPool(bufferSize int) *Pool {
+	return &Pool{
+		buffers: sync.Pool{
+			New: func() interface{} {
+				return make([]byte, bufferSize)
+			},
+		},
+	}
+}
+
+func (p *Pool) Get() []byte {
+	return p.buffers.Get().([]byte)
+}
+
+func (p *Pool) Put(buf []byte) {
+	p.buffers.Put(buf)
+}

carrier/carrier.go

@@ -11,9 +11,7 @@ import (
 	"strings"
 
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/token"
-	cloudflaredWebsocket "github.com/cloudflare/cloudflared/websocket"
-	"github.com/gorilla/websocket"
-	"github.com/sirupsen/logrus"
+	"github.com/pkg/errors"
 )
 
 type StartOptions struct {
@@ -21,6 +19,15 @@ type StartOptions struct {
 	Headers   http.Header
 }
 
+// Connection wraps up all the needed functions to forward over the tunnel
+type Connection interface {
+	// ServeStream is used to forward data from the client to the edge
+	ServeStream(*StartOptions, io.ReadWriter) error
+
+	// StartServer is used to listen for incoming connections from the edge to the origin
+	StartServer(net.Listener, string, <-chan struct{}) error
+}
+
 // StdinoutStream is empty struct for wrapping stdin/stdout
 // into a single ReadWriter
 type StdinoutStream struct {
@@ -44,86 +51,62 @@ func closeRespBody(resp *http.Response) {
 	}
 }
 
-// StartClient will copy the data from stdin/stdout over a WebSocket connection
-// to the edge (originURL)
-func StartClient(logger *logrus.Logger, stream io.ReadWriter, options *StartOptions) error {
-	return serveStream(logger, stream, options)
-}
-
-// StartServer will setup a listener on a specified address/port and then
+// StartForwarder will setup a listener on a specified address/port and then
 // forward connections to the origin by calling `Serve()`.
-func StartServer(logger *logrus.Logger, address string, shutdownC <-chan struct{}, options *StartOptions) error {
+func StartForwarder(conn Connection, address string, shutdownC <-chan struct{}, options *StartOptions) error {
 	listener, err := net.Listen("tcp", address)
 	if err != nil {
-		logger.WithError(err).Error("failed to start forwarding server")
-		return err
+		return errors.Wrap(err, "failed to start forwarding server")
 	}
-	logger.Info("Started listening on ", address)
-	return Serve(logger, listener, shutdownC, options)
+	return Serve(conn, listener, shutdownC, options)
+}
+
+// StartClient will copy the data from stdin/stdout over a WebSocket connection
+// to the edge (originURL)
+func StartClient(conn Connection, stream io.ReadWriter, options *StartOptions) error {
+	return serveStream(conn, stream, options)
 }
 
 // Serve accepts incoming connections on the specified net.Listener.
 // Each connection is handled in a new goroutine: its data is copied over a
 // WebSocket connection to the edge (originURL).
 // `Serve` always closes `listener`.
-func Serve(logger *logrus.Logger, listener net.Listener, shutdownC <-chan struct{}, options *StartOptions) error {
+func Serve(remoteConn Connection, listener net.Listener, shutdownC <-chan struct{}, options *StartOptions) error {
 	defer listener.Close()
-	for {
-		select {
-		case <-shutdownC:
-			return nil
-		default:
+	errChan := make(chan error)
+
+	go func() {
+		for {
 			conn, err := listener.Accept()
 			if err != nil {
-				return err
+				// don't block if parent goroutine quit early
+				select {
+				case errChan <- err:
+				default:
+				}
+				return
 			}
-			go serveConnection(logger, conn, options)
+			go serveConnection(remoteConn, conn, options)
 		}
+	}()
+
+	select {
+	case <-shutdownC:
+		return nil
+	case err := <-errChan:
+		return err
 	}
 }
 
 // serveConnection handles connections for the Serve() call
-func serveConnection(logger *logrus.Logger, c net.Conn, options *StartOptions) {
+func serveConnection(remoteConn Connection, c net.Conn, options *StartOptions) {
 	defer c.Close()
-	serveStream(logger, c, options)
+	serveStream(remoteConn, c, options)
 }
 
 // serveStream will serve the data over the WebSocket stream
-func serveStream(logger *logrus.Logger, conn io.ReadWriter, options *StartOptions) error {
-	wsConn, err := createWebsocketStream(options)
-	if err != nil {
-		logger.WithError(err).Errorf("failed to connect to %s\n", options.OriginURL)
-		return err
-	}
-	defer wsConn.Close()
-
-	cloudflaredWebsocket.Stream(wsConn, conn)
-
-	return nil
-}
-
-// createWebsocketStream will create a WebSocket connection to stream data over
-// It also handles redirects from Access and will present that flow if
-// the token is not present on the request
-func createWebsocketStream(options *StartOptions) (*cloudflaredWebsocket.Conn, error) {
-	req, err := http.NewRequest(http.MethodGet, options.OriginURL, nil)
-	if err != nil {
-		return nil, err
-	}
-	req.Header = options.Headers
-
-	wsConn, resp, err := cloudflaredWebsocket.ClientConnect(req, nil)
-	defer closeRespBody(resp)
-	if err != nil && IsAccessResponse(resp) {
-		wsConn, err = createAccessAuthenticatedStream(options)
-		if err != nil {
-			return nil, err
-		}
-	} else if err != nil {
-		return nil, err
-	}
-
-	return &cloudflaredWebsocket.Conn{Conn: wsConn}, nil
+func serveStream(remoteConn Connection, conn io.ReadWriter, options *StartOptions) error {
+	return remoteConn.ServeStream(options, conn)
 }
 
 // IsAccessResponse checks the http Response to see if the url location
@@ -144,49 +127,7 @@ func IsAccessResponse(resp *http.Response) bool {
 	return false
 }
 
-// createAccessAuthenticatedStream will try load a token from storage and make
-// a connection with the token set on the request. If it still get redirect,
-// this probably means the token in storage is invalid (expired/revoked). If that
-// happens it deletes the token and runs the connection again, so the user can
-// login again and generate a new one.
-func createAccessAuthenticatedStream(options *StartOptions) (*websocket.Conn, error) {
-	wsConn, resp, err := createAccessWebSocketStream(options)
-	defer closeRespBody(resp)
-	if err == nil {
-		return wsConn, nil
-	}
-
-	if !IsAccessResponse(resp) {
-		return nil, err
-	}
-
-	// Access Token is invalid for some reason. Go through regen flow
-	originReq, err := http.NewRequest(http.MethodGet, options.OriginURL, nil)
-	if err != nil {
-		return nil, err
-	}
-	if err := token.RemoveTokenIfExists(originReq.URL); err != nil {
-		return nil, err
-	}
-	wsConn, resp, err = createAccessWebSocketStream(options)
-	defer closeRespBody(resp)
-	if err != nil {
-		return nil, err
-	}
-
-	return wsConn, nil
-}
-
-// createAccessWebSocketStream builds an Access request and makes a connection
-func createAccessWebSocketStream(options *StartOptions) (*websocket.Conn, *http.Response, error) {
-	req, err := BuildAccessRequest(options)
-	if err != nil {
-		return nil, nil, err
-	}
-	return cloudflaredWebsocket.ClientConnect(req, nil)
-}
-
-// buildAccessRequest builds an HTTP request with the Access token set
+// BuildAccessRequest builds an HTTP request with the Access token set
 func BuildAccessRequest(options *StartOptions) (*http.Request, error) {
 	req, err := http.NewRequest(http.MethodGet, options.OriginURL, nil)
 	if err != nil {

carrier/carrier_test.go

@@ -44,6 +44,7 @@ func (s *testStreamer) Write(p []byte) (int, error) {
 func TestStartClient(t *testing.T) {
 	message := "Good morning Austin! Time for another sunny day in the great state of Texas."
 	logger := logrus.New()
+	wsConn := NewWSConnection(logger, false)
 	ts := newTestWebSocketServer()
 	defer ts.Close()
 
@@ -52,7 +53,7 @@ func TestStartClient(t *testing.T) {
 		OriginURL: "http://" + ts.Listener.Addr().String(),
 		Headers:   nil,
 	}
-	err := StartClient(logger, buf, options)
+	err := StartClient(wsConn, buf, options)
 	assert.NoError(t, err)
 	buf.Write([]byte(message))
 
@@ -69,6 +70,7 @@ func TestStartServer(t *testing.T) {
 	message := "Good morning Austin! Time for another sunny day in the great state of Texas."
 	logger := logrus.New()
 	shutdownC := make(chan struct{})
+	wsConn := NewWSConnection(logger, false)
 	ts := newTestWebSocketServer()
 	defer ts.Close()
 	options := &StartOptions{
@@ -77,7 +79,7 @@ func TestStartServer(t *testing.T) {
 	}
 
 	go func() {
-		err := Serve(logger, listener, shutdownC, options)
+		err := Serve(wsConn, listener, shutdownC, options)
 		if err != nil {
 			t.Fatalf("Error running server: %v", err)
 		}

carrier/websocket.go

@@ -0,0 +1,137 @@
+package carrier
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+
+	"github.com/cloudflare/cloudflared/cmd/cloudflared/token"
+	"github.com/cloudflare/cloudflared/socks"
+	cfwebsocket "github.com/cloudflare/cloudflared/websocket"
+	"github.com/gorilla/websocket"
+	"github.com/sirupsen/logrus"
+)
+
+// Websocket is used to carry data via WS binary frames over the tunnel from client to the origin
+// This implements the functions for glider proxy (sock5) and the carrier interface
+type Websocket struct {
+	logger  *logrus.Logger
+	isSocks bool
+}
+
+type wsdialer struct {
+	conn *cfwebsocket.Conn
+}
+
+func (d *wsdialer) Dial(address string) (io.ReadWriteCloser, *socks.AddrSpec, error) {
+	local, ok := d.conn.LocalAddr().(*net.TCPAddr)
+	if !ok {
+		return nil, nil, fmt.Errorf("not a tcp connection")
+	}
+
+	addr := socks.AddrSpec{IP: local.IP, Port: local.Port}
+	return d.conn, &addr, nil
+}
+
+// NewWSConnection returns a new connection object
+func NewWSConnection(logger *logrus.Logger, isSocks bool) Connection {
+	return &Websocket{
+		logger:  logger,
+		isSocks: isSocks,
+	}
+}
+
+// ServeStream will create a Websocket client stream connection to the edge
+// it blocks and writes the raw data from conn over the tunnel
+func (ws *Websocket) ServeStream(options *StartOptions, conn io.ReadWriter) error {
+	wsConn, err := createWebsocketStream(options)
+	if err != nil {
+		ws.logger.WithError(err).Errorf("failed to connect to %s", options.OriginURL)
+		return err
+	}
+	defer wsConn.Close()
+
+	if ws.isSocks {
+		dialer := &wsdialer{conn: wsConn}
+		requestHandler := socks.NewRequestHandler(dialer)
+		socksServer := socks.NewConnectionHandler(requestHandler)
+
+		socksServer.Serve(conn)
+	} else {
+		cfwebsocket.Stream(wsConn, conn)
+	}
+	return nil
+}
+
+// StartServer creates a Websocket server to listen for connections.
+// This is used on the origin (tunnel) side to take data from the muxer and send it to the origin
+func (ws *Websocket) StartServer(listener net.Listener, remote string, shutdownC <-chan struct{}) error {
+	return cfwebsocket.StartProxyServer(ws.logger, listener, remote, shutdownC, cfwebsocket.DefaultStreamHandler)
+}
+
+// createWebsocketStream will create a WebSocket connection to stream data over
+// It also handles redirects from Access and will present that flow if
+// the token is not present on the request
+func createWebsocketStream(options *StartOptions) (*cfwebsocket.Conn, error) {
+	req, err := http.NewRequest(http.MethodGet, options.OriginURL, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header = options.Headers
+
+	wsConn, resp, err := cfwebsocket.ClientConnect(req, nil)
+	defer closeRespBody(resp)
+	if err != nil && IsAccessResponse(resp) {
+		wsConn, err = createAccessAuthenticatedStream(options)
+		if err != nil {
+			return nil, err
+		}
+	} else if err != nil {
+		return nil, err
+	}
+
+	return &cfwebsocket.Conn{Conn: wsConn}, nil
+}
+
+// createAccessAuthenticatedStream will try load a token from storage and make
+// a connection with the token set on the request. If it still get redirect,
+// this probably means the token in storage is invalid (expired/revoked). If that
+// happens it deletes the token and runs the connection again, so the user can
+// login again and generate a new one.
+func createAccessAuthenticatedStream(options *StartOptions) (*websocket.Conn, error) {
+	wsConn, resp, err := createAccessWebSocketStream(options)
+	defer closeRespBody(resp)
+	if err == nil {
+		return wsConn, nil
+	}
+
+	if !IsAccessResponse(resp) {
+		return nil, err
+	}
+
+	// Access Token is invalid for some reason. Go through regen flow
+	originReq, err := http.NewRequest(http.MethodGet, options.OriginURL, nil)
+	if err != nil {
+		return nil, err
+	}
+	if err := token.RemoveTokenIfExists(originReq.URL); err != nil {
+		return nil, err
+	}
+	wsConn, resp, err = createAccessWebSocketStream(options)
+	defer closeRespBody(resp)
+	if err != nil {
+		return nil, err
+	}
+
+	return wsConn, nil
+}
+
+// createAccessWebSocketStream builds an Access request and makes a connection
+func createAccessWebSocketStream(options *StartOptions) (*websocket.Conn, *http.Response, error) {
+	req, err := BuildAccessRequest(options)
+	if err != nil {
+		return nil, nil, err
+	}
+	return cfwebsocket.ClientConnect(req, nil)
+}

certutil/certutil.go

@@ -0,0 +1,94 @@
+package certutil
+
+import (
+	"crypto/x509"
+	"encoding/json"
+	"encoding/pem"
+	"fmt"
+	"strings"
+)
+
+type namedTunnelToken struct {
+	ZoneID     string `json:"zoneID"`
+	AccountID  string `json:"accountID"`
+	ServiceKey string `json:"serviceKey"`
+}
+
+type OriginCert struct {
+	PrivateKey interface{}
+	Cert       *x509.Certificate
+	ZoneID     string
+	ServiceKey string
+	AccountID  string
+}
+
+func DecodeOriginCert(blocks []byte) (*OriginCert, error) {
+	if len(blocks) == 0 {
+		return nil, fmt.Errorf("Cannot decode empty certificate")
+	}
+	originCert := OriginCert{}
+	block, rest := pem.Decode(blocks)
+	for {
+		if block == nil {
+			break
+		}
+		switch block.Type {
+		case "PRIVATE KEY":
+			if originCert.PrivateKey != nil {
+				return nil, fmt.Errorf("Found multiple private key in the certificate")
+			}
+			// RSA private key
+			privateKey, err := x509.ParsePKCS8PrivateKey(block.Bytes)
+			if err != nil {
+				return nil, fmt.Errorf("Cannot parse private key")
+			}
+			originCert.PrivateKey = privateKey
+		case "CERTIFICATE":
+			if originCert.Cert != nil {
+				return nil, fmt.Errorf("Found multiple certificates in the certificate")
+			}
+			cert, err := x509.ParseCertificates(block.Bytes)
+			if err != nil {
+				return nil, fmt.Errorf("Cannot parse certificate")
+			} else if len(cert) > 1 {
+				return nil, fmt.Errorf("Found multiple certificates in the certificate")
+			}
+			originCert.Cert = cert[0]
+		case "WARP TOKEN", "ARGO TUNNEL TOKEN":
+			if originCert.ZoneID != "" || originCert.ServiceKey != "" {
+				return nil, fmt.Errorf("Found multiple tokens in the certificate")
+			}
+			// The token is a string,
+			// Try the newer JSON format
+			ntt := namedTunnelToken{}
+			if err := json.Unmarshal(block.Bytes, &ntt); err == nil {
+				originCert.ZoneID = ntt.ZoneID
+				originCert.ServiceKey = ntt.ServiceKey
+				originCert.AccountID = ntt.AccountID
+			} else {
+				// Try the older format, where the zoneID and service key are seperated by
+				// a new line character
+				token := string(block.Bytes)
+				s := strings.Split(token, "\n")
+				if len(s) != 2 {
+					return nil, fmt.Errorf("Cannot parse token")
+				}
+				originCert.ZoneID = s[0]
+				originCert.ServiceKey = s[1]
+			}
+		default:
+			return nil, fmt.Errorf("Unknown block %s in the certificate", block.Type)
+		}
+		block, rest = pem.Decode(rest)
+	}
+
+	if originCert.PrivateKey == nil {
+		return nil, fmt.Errorf("Missing private key in the certificate")
+	} else if originCert.Cert == nil {
+		return nil, fmt.Errorf("Missing certificate in the certificate")
+	} else if originCert.ZoneID == "" || originCert.ServiceKey == "" {
+		return nil, fmt.Errorf("Missing token in the certificate")
+	}
+
+	return &originCert, nil
+}

certutil/certutil_test.go

@@ -0,0 +1,67 @@
+package certutil
+
+import (
+	"fmt"
+	"io/ioutil"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLoadOriginCert(t *testing.T) {
+	cert, err := DecodeOriginCert([]byte{})
+	assert.Equal(t, fmt.Errorf("Cannot decode empty certificate"), err)
+	assert.Nil(t, cert)
+
+	blocks, err := ioutil.ReadFile("test-cert-no-key.pem")
+	assert.Nil(t, err)
+	cert, err = DecodeOriginCert(blocks)
+	assert.Equal(t, fmt.Errorf("Missing private key in the certificate"), err)
+	assert.Nil(t, cert)
+
+	blocks, err = ioutil.ReadFile("test-cert-two-certificates.pem")
+	assert.Nil(t, err)
+	cert, err = DecodeOriginCert(blocks)
+	assert.Equal(t, fmt.Errorf("Found multiple certificates in the certificate"), err)
+	assert.Nil(t, cert)
+
+	blocks, err = ioutil.ReadFile("test-cert-unknown-block.pem")
+	assert.Nil(t, err)
+	cert, err = DecodeOriginCert(blocks)
+	assert.Equal(t, fmt.Errorf("Unknown block RSA PRIVATE KEY in the certificate"), err)
+	assert.Nil(t, cert)
+
+	blocks, err = ioutil.ReadFile("test-cert.pem")
+	assert.Nil(t, err)
+	cert, err = DecodeOriginCert(blocks)
+	assert.Nil(t, err)
+	assert.NotNil(t, cert)
+	assert.Equal(t, "7b0a4d77dfb881c1a3b7d61ea9443e19", cert.ZoneID)
+	key := "v1.0-58bd4f9e28f7b3c28e05a35ff3e80ab4fd9644ef3fece537eb0d12e2e9258217-183442fbb0bbdb3e571558fec9b5589ebd77aafc87498ee3f09f64a4ad79ffe8791edbae08b36c1d8f1d70a8670de56922dff92b15d214a524f4ebfa1958859e-7ce80f79921312a6022c5d25e2d380f82ceaefe3fbdc43dd13b080e3ef1e26f7"
+	assert.Equal(t, key, cert.ServiceKey)
+}
+
+func TestNewlineArgoTunnelToken(t *testing.T) {
+	ArgoTunnelTokenTest(t, "test-argo-tunnel-cert.pem")
+}
+
+func TestJSONArgoTunnelToken(t *testing.T) {
+	// The given cert's Argo Tunnel Token was generated by base64 encoding this JSON:
+	// {
+	// "zoneID": "7b0a4d77dfb881c1a3b7d61ea9443e19",
+	// "serviceKey": "test-service-key",
+	// "accountID": "abcdabcdabcdabcd1234567890abcdef"
+	// }
+	ArgoTunnelTokenTest(t, "test-argo-tunnel-cert-json.pem")
+}
+
+func ArgoTunnelTokenTest(t *testing.T, path string) {
+	blocks, err := ioutil.ReadFile(path)
+	assert.Nil(t, err)
+	cert, err := DecodeOriginCert(blocks)
+	assert.Nil(t, err)
+	assert.NotNil(t, cert)
+	assert.Equal(t, "7b0a4d77dfb881c1a3b7d61ea9443e19", cert.ZoneID)
+	key := "test-service-key"
+	assert.Equal(t, key, cert.ServiceKey)
+}

certutil/test-argo-tunnel-cert-json.pem

@@ -0,0 +1,57 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+-----BEGIN ARGO TUNNEL TOKEN-----
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+-----END ARGO TUNNEL TOKEN-----

certutil/test-argo-tunnel-cert.pem

@@ -0,0 +1,56 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+-----BEGIN ARGO TUNNEL TOKEN-----
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+-----END ARGO TUNNEL TOKEN-----

certutil/test-cert-no-key.pem

@@ -0,0 +1,33 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN WARP TOKEN-----
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+-----END WARP TOKEN-----

certutil/test-cert-two-certificates.pem

@@ -0,0 +1,85 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+-----BEGIN CERTIFICATE-----
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+-----BEGIN WARP TOKEN-----
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+-----END WARP TOKEN-----

certutil/test-cert-unknown-block.pem

@@ -0,0 +1,89 @@
+-----BEGIN PRIVATE KEY-----
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+-----BEGIN CERTIFICATE-----
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+-----BEGIN WARP TOKEN-----
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+-----END WARP TOKEN-----
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----

certutil/test-cert.pem

@@ -0,0 +1,61 @@
+-----BEGIN PRIVATE KEY-----
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+-----END PRIVATE KEY-----
+-----BEGIN CERTIFICATE-----
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+aW4gQ2VydGlmaWNhdGUwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCf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+-----END CERTIFICATE-----
+-----BEGIN WARP TOKEN-----
+N2IwYTRkNzdkZmI4ODFjMWEzYjdkNjFlYTk0NDNlMTkKdjEuMC01OGJkNGY5ZTI4
+ZjdiM2MyOGUwNWEzNWZmM2U4MGFiNGZkOTY0NGVmM2ZlY2U1MzdlYjBkMTJlMmU5
+MjU4MjE3LTE4MzQ0MmZiYjBiYmRiM2U1NzE1NThmZWM5YjU1ODllYmQ3N2FhZmM4
+NzQ5OGVlM2YwOWY2NGE0YWQ3OWZmZTg3OTFlZGJhZTA4YjM2YzFkOGYxZDcwYTg2
+NzBkZTU2OTIyZGZmOTJiMTVkMjE0YTUyNGY0ZWJmYTE5NTg4NTllLTdjZTgwZjc5
+OTIxMzEyYTYwMjJjNWQyNWUyZDM4MGY4MmNlYWVmZTNmYmRjNDNkZDEzYjA4MGUz
+ZWYxZTI2Zjc=
+-----END WARP TOKEN-----

cmd/cloudflared/access/carrier.go

@@ -12,6 +12,32 @@ import (
 	cli "gopkg.in/urfave/cli.v2"
 )
 
+// StartForwarder starts a client side websocket forward
+func StartForwarder(forwarder config.Forwarder, shutdown <-chan struct{}) error {
+	validURLString, err := validation.ValidateUrl(forwarder.Listener)
+	if err != nil {
+		logger.WithError(err).Error("Error validating origin URL")
+		return errors.Wrap(err, "error validating origin URL")
+	}
+
+	validURL, err := url.Parse(validURLString)
+	if err != nil {
+		logger.WithError(err).Error("Error parsing origin URL")
+		return errors.Wrap(err, "error parsing origin URL")
+	}
+
+	options := &carrier.StartOptions{
+		OriginURL: forwarder.URL,
+		Headers:   make(http.Header), //TODO: TUN-2688 support custom headers from config file
+	}
+
+	// we could add a cmd line variable for this bool if we want the SOCK5 server to be on the client side
+	wsConn := carrier.NewWSConnection(logger, false)
+
+	logger.Infof("Start Websocket listener on: %s", validURL.Host)
+	return carrier.StartForwarder(wsConn, validURL.Host, shutdown, options)
+}
+
 // ssh will start a WS proxy server for server mode
 // or copy from stdin/stdout for client mode
 // useful for proxying other protocols (like ssh) over websockets
@@ -44,6 +70,9 @@ func ssh(c *cli.Context) error {
 		Headers:   headers,
 	}
 
+	// we could add a cmd line variable for this bool if we want the SOCK5 server to be on the client side
+	wsConn := carrier.NewWSConnection(logger, false)
+
 	if c.NArg() > 0 || c.IsSet(sshURLFlag) {
 		localForwarder, err := config.ValidateUrl(c)
 		if err != nil {
@@ -55,10 +84,12 @@ func ssh(c *cli.Context) error {
 			logger.WithError(err).Error("Error validating origin URL")
 			return errors.Wrap(err, "error validating origin URL")
 		}
-		return carrier.StartServer(logger, forwarder.Host, shutdownC, options)
+
+		logger.Infof("Start Websocket listener on: %s", forwarder.Host)
+		return carrier.StartForwarder(wsConn, forwarder.Host, shutdownC, options)
 	}
 
-	return carrier.StartClient(logger, &carrier.StdinoutStream{}, options)
+	return carrier.StartClient(wsConn, &carrier.StdinoutStream{}, options)
 }
 
 func buildRequestHeaders(values []string) http.Header {

cmd/cloudflared/access/cmd.go

@@ -119,7 +119,7 @@ func Commands() []*cli.Command {
 				{
 					Name:        "ssh",
 					Action:      ssh,
-					Aliases:     []string{"rdp"},
+					Aliases:     []string{"rdp", "tcp"},
 					Usage:       "",
 					ArgsUsage:   "",
 					Description: `The ssh subcommand sends data over a proxy to the Cloudflare edge.`,

cmd/cloudflared/app_service.go

@@ -0,0 +1,112 @@
+package main
+
+import (
+	"github.com/cloudflare/cloudflared/cmd/cloudflared/access"
+	"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
+	"github.com/sirupsen/logrus"
+)
+
+type forwarderState struct {
+	forwarder config.Forwarder
+	shutdown  chan struct{}
+}
+
+func (s *forwarderState) Shutdown() {
+	s.shutdown <- struct{}{}
+}
+
+// AppService is the main service that runs when no command lines flags are passed to cloudflared
+// it manages all the running services such as tunnels, forwarders, DNS resolver, etc
+type AppService struct {
+	configManager    config.Manager
+	shutdownC        chan struct{}
+	forwarders       map[string]forwarderState
+	configUpdateChan chan config.Root
+	logger           *logrus.Logger
+}
+
+// NewAppService creates a new AppService with needed supporting services
+func NewAppService(configManager config.Manager, shutdownC chan struct{}, logger *logrus.Logger) *AppService {
+	return &AppService{
+		configManager:    configManager,
+		shutdownC:        shutdownC,
+		forwarders:       make(map[string]forwarderState),
+		configUpdateChan: make(chan config.Root),
+		logger:           logger,
+	}
+}
+
+// Run starts the run loop to handle config updates and run forwarders, tunnels, etc
+func (s *AppService) Run() error {
+	go s.actionLoop()
+	return s.configManager.Start(s)
+}
+
+// Shutdown kills all the running services
+func (s *AppService) Shutdown() error {
+	s.configManager.Shutdown()
+	return nil
+}
+
+// ConfigDidUpdate is a delegate notification from the config manager
+// it is trigger when the config file has been updated and now the service needs
+// to update its services accordingly
+func (s *AppService) ConfigDidUpdate(c config.Root) {
+	s.configUpdateChan <- c
+}
+
+// actionLoop handles the actions from running processes
+func (s *AppService) actionLoop() {
+	for {
+		select {
+		case c := <-s.configUpdateChan:
+			s.handleConfigUpdate(c)
+		case <-s.shutdownC:
+			for _, state := range s.forwarders {
+				state.Shutdown()
+			}
+			return
+		}
+	}
+}
+
+func (s *AppService) handleConfigUpdate(c config.Root) {
+	// handle the client forward listeners
+	activeListeners := map[string]struct{}{}
+	for _, f := range c.Forwarders {
+		s.handleForwarderUpdate(f)
+		activeListeners[f.Listener] = struct{}{}
+	}
+
+	// remove any listeners that are no longer active
+	for key, state := range s.forwarders {
+		if _, ok := activeListeners[key]; !ok {
+			state.Shutdown()
+			delete(s.forwarders, key)
+		}
+	}
+
+	// TODO: AUTH-2588, TUN-1451 - tunnels and dns proxy
+}
+
+// handle managing a forwarder service
+func (s *AppService) handleForwarderUpdate(f config.Forwarder) {
+	// check if we need to start a new listener or stop an old one
+	if state, ok := s.forwarders[f.Listener]; ok {
+		if state.forwarder.Hash() == f.Hash() {
+			return // the exact same listener, no changes, so move along
+		}
+		state.Shutdown() //shutdown the listener since a new one is starting
+	}
+	// add a new forwarder to the list
+	state := forwarderState{forwarder: f, shutdown: make(chan struct{}, 1)}
+	s.forwarders[f.Listener] = state
+
+	// start the forwarder
+	go func(f forwarderState) {
+		err := access.StartForwarder(f.forwarder, f.shutdown)
+		if err != nil {
+			s.logger.WithError(err).Errorf("Forwarder at address: %s", f.forwarder)
+		}
+	}(state)
+}

cmd/cloudflared/config/manager.go

@@ -0,0 +1,101 @@
+package config
+
+import (
+	"errors"
+	"os"
+
+	"github.com/cloudflare/cloudflared/watcher"
+
+	"github.com/sirupsen/logrus"
+	"gopkg.in/yaml.v2"
+)
+
+// Notifier sends out config updates
+type Notifier interface {
+	ConfigDidUpdate(Root)
+}
+
+// Manager is the base functions of the config manager
+type Manager interface {
+	Start(Notifier) error
+	Shutdown()
+}
+
+// FileManager watches the yaml config for changes
+// sends updates to the service to reconfigure to match the updated config
+type FileManager struct {
+	watcher    watcher.Notifier
+	notifier   Notifier
+	configPath string
+	logger     *logrus.Logger
+}
+
+// NewFileManager creates a config manager
+func NewFileManager(watcher watcher.Notifier, configPath string, logger *logrus.Logger) (Manager, error) {
+	m := &FileManager{
+		watcher:    watcher,
+		configPath: configPath,
+		logger:     logger,
+	}
+	err := watcher.Add(configPath)
+	return m, err
+}
+
+// Start starts the runloop to watch for config changes
+func (m *FileManager) Start(notifier Notifier) error {
+	m.notifier = notifier
+
+	// update the notifier with a fresh config on start
+	config, err := m.GetConfig()
+	if err != nil {
+		return err
+	}
+	notifier.ConfigDidUpdate(config)
+
+	m.watcher.Start(m)
+	return nil
+}
+
+// GetConfig reads the yaml file from the disk
+func (m *FileManager) GetConfig() (Root, error) {
+	if m.configPath == "" {
+		return Root{}, errors.New("unable to find config file")
+	}
+
+	file, err := os.Open(m.configPath)
+	if err != nil {
+		return Root{}, err
+	}
+	defer file.Close()
+
+	var config Root
+	if err := yaml.NewDecoder(file).Decode(&config); err != nil {
+		return Root{}, err
+	}
+
+	return config, nil
+}
+
+// Shutdown stops the watcher
+func (m *FileManager) Shutdown() {
+	m.watcher.Shutdown()
+}
+
+// File change notifications from the watcher
+
+// WatcherItemDidChange triggers when the yaml config is updated
+// sends the updated config to the service to reload its state
+func (m *FileManager) WatcherItemDidChange(filepath string) {
+	config, err := m.GetConfig()
+	if err != nil {
+		m.logger.WithError(err).Error("Failed to read new config")
+		return
+	}
+	m.logger.Info("Config file has been updated")
+	m.notifier.ConfigDidUpdate(config)
+}
+
+// WatcherDidError notifies of errors with the file watcher
+func (m *FileManager) WatcherDidError(err error) {
+	m.logger.WithError(err).Error("Config watcher encountered an error")
+}

cmd/cloudflared/config/manager_test.go

@@ -0,0 +1,80 @@
+package config
+
+import (
+	"bufio"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/cloudflare/cloudflared/log"
+	"github.com/cloudflare/cloudflared/watcher"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v2"
+)
+
+type mockNotifier struct {
+	configs []Root
+}
+
+func (n *mockNotifier) ConfigDidUpdate(c Root) {
+	n.configs = append(n.configs, c)
+}
+
+func writeConfig(t *testing.T, f *os.File, c *Root) {
+	f.Sync()
+	b, err := yaml.Marshal(c)
+	assert.NoError(t, err)
+
+	w := bufio.NewWriter(f)
+	_, err = w.Write(b)
+	assert.NoError(t, err)
+
+	err = w.Flush()
+	assert.NoError(t, err)
+}
+
+func TestConfigChanged(t *testing.T) {
+	filePath := "config.yaml"
+	f, err := os.Create(filePath)
+	assert.NoError(t, err)
+	defer func() {
+		f.Close()
+		os.Remove(filePath)
+	}()
+	c := &Root{
+		OrgKey:          "abcd",
+		ConfigType:      "mytype",
+		CheckinInterval: 1,
+		Forwarders: []Forwarder{
+			{
+				URL:      "test.daltoniam.com",
+				Listener: "127.0.0.1:8080",
+			},
+		},
+	}
+	writeConfig(t, f, c)
+
+	w, err := watcher.NewFile()
+	assert.NoError(t, err)
+	logger := log.CreateLogger()
+	service, err := NewFileManager(w, filePath, logger)
+	assert.NoError(t, err)
+
+	n := &mockNotifier{}
+	go service.Start(n)
+
+	c.Forwarders = append(c.Forwarders, Forwarder{URL: "add.daltoniam.com", Listener: "127.0.0.1:8081"})
+	writeConfig(t, f, c)
+
+	// give it time to trigger
+	time.Sleep(10 * time.Millisecond)
+	service.Shutdown()
+
+	assert.Len(t, n.configs, 2, "did not get 2 config updates as expected")
+	assert.Len(t, n.configs[0].Forwarders, 1, "not the amount of forwarders expected")
+	assert.Len(t, n.configs[1].Forwarders, 2, "not the amount of forwarders expected")
+
+	assert.Equal(t, n.configs[0].Forwarders[0].Hash(), c.Forwarders[0].Hash(), "forwarder hashes don't match")
+	assert.Equal(t, n.configs[1].Forwarders[0].Hash(), c.Forwarders[0].Hash(), "forwarder hashes don't match")
+	assert.Equal(t, n.configs[1].Forwarders[1].Hash(), c.Forwarders[1].Hash(), "forwarder hashes don't match")
+}

cmd/cloudflared/config/model.go

@@ -0,0 +1,37 @@
+package config
+
+import (
+	"crypto/md5"
+	"fmt"
+	"io"
+)
+
+// Forwarder represents a client side listener to forward traffic to the edge
+type Forwarder struct {
+	URL      string `json:"url"`
+	Listener string `json:"listener"`
+}
+
+// Tunnel represents a tunnel that should be started
+type Tunnel struct {
+	URL          string `json:"url"`
+	Origin       string `json:"origin"`
+	ProtocolType string `json:"type"`
+}
+
+// Root is the base options to configure the service
+type Root struct {
+	OrgKey          string      `json:"org_key"`
+	ConfigType      string      `json:"type"`
+	CheckinInterval int         `json:"checkin_interval"`
+	Forwarders      []Forwarder `json:"forwarders,omitempty"`
+	Tunnels         []Tunnel    `json:"tunnels,omitempty"`
+}
+
+// Hash returns the computed values to see if the forwarder values change
+func (f *Forwarder) Hash() string {
+	h := md5.New()
+	io.WriteString(h, f.URL)
+	io.WriteString(h, f.Listener)
+	return fmt.Sprintf("%x", h.Sum(nil))
+}

cmd/cloudflared/linux_service.go

@@ -118,10 +118,6 @@ case "$1" in
             echo "Starting $name"
             $cmd >> "$stdout_log" 2>> "$stderr_log" &
             echo $! > "$pid_file"
-            if ! is_running; then
-                echo "Unable to start, see $stdout_log and $stderr_log"
-                exit 1
-            fi
         fi
     ;;
     stop)

cmd/cloudflared/macos_service.go

@@ -60,7 +60,7 @@ func newLaunchdTemplate(installPath, stdoutPath, stderrPath string) *ServiceTemp
 			<false/>
 		</dict>
 		<key>ThrottleInterval</key>
-		<integer>20</integer>
+		<integer>5</integer>
 	</dict>
 </plist>`, launchdIdentifier, stdoutPath, stderrPath),
 	}

cmd/cloudflared/main.go

@@ -6,10 +6,12 @@ import (
 	"time"
 
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/access"
+	"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/tunnel"
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/updater"
 	"github.com/cloudflare/cloudflared/log"
 	"github.com/cloudflare/cloudflared/metrics"
+	"github.com/cloudflare/cloudflared/watcher"
 
 	raven "github.com/getsentry/raven-go"
 	homedir "github.com/mitchellh/go-homedir"
@@ -121,7 +123,7 @@ func isEmptyInvocation(c *cli.Context) bool {
 func action(version string, shutdownC, graceShutdownC chan struct{}) cli.ActionFunc {
 	return func(c *cli.Context) (err error) {
 		if isEmptyInvocation(c) {
-			cli.ShowAppHelpAndExit(c, 1)
+			return handleServiceMode(shutdownC)
 		}
 		tags := make(map[string]string)
 		tags["hostname"] = c.String("hostname")
@@ -161,3 +163,27 @@ func handleError(err error) {
 	}
 	raven.CaptureError(err, nil)
 }
+
+// cloudflared was started without any flags
+func handleServiceMode(shutdownC chan struct{}) error {
+	// start the main run loop that reads from the config file
+	f, err := watcher.NewFile()
+	if err != nil {
+		logger.WithError(err).Error("Cannot load config file")
+		return err
+	}
+
+	configPath := config.FindDefaultConfigPath()
+	configManager, err := config.NewFileManager(f, configPath, logger)
+	if err != nil {
+		logger.WithError(err).Error("Cannot setup config file for monitoring")
+		return err
+	}
+
+	appService := NewAppService(configManager, shutdownC, logger)
+	if err := appService.Run(); err != nil {
+		logger.WithError(err).Error("Failed to start app service")
+		return err
+	}
+	return nil
+}

cmd/cloudflared/token/token.go

@@ -2,12 +2,14 @@ package token
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"net/url"
 	"os"
 	"os/signal"
 	"syscall"
+	"time"
 
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/path"
@@ -34,6 +36,21 @@ type signalHandler struct {
 	signals    []os.Signal
 }
 
+type jwtPayload struct {
+	Aud   []string `json:"aud"`
+	Email string   `json:"email"`
+	Exp   int      `json:"exp"`
+	Iat   int      `json:"iat"`
+	Nbf   int      `json:"nbf"`
+	Iss   string   `json:"iss"`
+	Type  string   `json:"type"`
+	Subt  string   `json:"sub"`
+}
+
+func (p jwtPayload) isExpired() bool {
+	return int(time.Now().Unix()) > p.Exp
+}
+
 func (s *signalHandler) register(handler func()) {
 	s.sigChannel = make(chan os.Signal, 1)
 	signal.Notify(s.sigChannel, s.signals...)
@@ -147,7 +164,7 @@ func FetchToken(appURL *url.URL) (string, error) {
 	return string(token), nil
 }
 
-// GetTokenIfExists will return the token from local storage if it exists
+// GetTokenIfExists will return the token from local storage if it exists and not expired
 func GetTokenIfExists(url *url.URL) (string, error) {
 	path, err := path.GenerateFilePathFromURL(url, keyName)
 	if err != nil {
@@ -162,6 +179,17 @@ func GetTokenIfExists(url *url.URL) (string, error) {
 		return "", err
 	}
 
+	var payload jwtPayload
+	err = json.Unmarshal(token.Payload, &payload)
+	if err != nil {
+		return "", err
+	}
+
+	if payload.isExpired() {
+		err := os.Remove(path)
+		return "", err
+	}
+
 	return token.Encode(), nil
 }
 

cmd/cloudflared/tunnel/cmd.go

@@ -1,6 +1,7 @@
 package tunnel
 
 import (
+	"bufio"
 	"context"
 	"fmt"
 	"io/ioutil"
@@ -10,6 +11,7 @@ import (
 	"reflect"
 	"runtime"
 	"runtime/trace"
+	"strings"
 	"sync"
 	"time"
 
@@ -23,6 +25,7 @@ import (
 	"github.com/cloudflare/cloudflared/metrics"
 	"github.com/cloudflare/cloudflared/origin"
 	"github.com/cloudflare/cloudflared/signal"
+	"github.com/cloudflare/cloudflared/socks"
 	"github.com/cloudflare/cloudflared/sshlog"
 	"github.com/cloudflare/cloudflared/sshserver"
 	"github.com/cloudflare/cloudflared/supervisor"
@@ -36,6 +39,7 @@ import (
 	"github.com/getsentry/raven-go"
 	"github.com/gliderlabs/ssh"
 	"github.com/google/uuid"
+	"github.com/mitchellh/go-homedir"
 	"github.com/pkg/errors"
 	"gopkg.in/urfave/cli.v2"
 	"gopkg.in/urfave/cli.v2/altsrc"
@@ -76,6 +80,9 @@ const (
 	// hostKeyPath is the path of the dir to save SSH host keys too
 	hostKeyPath = "host-key-path"
 
+	// socks5Flag is to enable the socks server to deframe
+	socks5Flag = "socks5"
+
 	noIntentMsg = "The --intent argument is required. Cloudflared looks up an Intent to determine what configuration to use (i.e. which tunnels to start). If you don't have any Intents yet, you can use a placeholder Intent Label for now. Then, when you make an Intent with that label, cloudflared will get notified and open the tunnels you specified in that Intent."
 )
 
@@ -133,6 +140,12 @@ func Commands() []*cli.Command {
 					Value:   cli.NewStringSlice("https://1.1.1.1/dns-query", "https://1.0.0.1/dns-query"),
 					EnvVars: []string{"TUNNEL_DNS_UPSTREAM"},
 				},
+				&cli.StringSliceFlag{
+					Name:    "bootstrap",
+					Usage:   "bootstrap endpoint URL, you can specify multiple endpoints for redundancy.",
+					Value:   cli.NewStringSlice("https://162.159.36.1/dns-query", "https://162.159.46.1/dns-query", "https://[2606:4700:4700::1111]/dns-query", "https://[2606:4700:4700::1001]/dns-query"),
+					EnvVars: []string{"TUNNEL_DNS_BOOTSTRAP"},
+				},
 			},
 			ArgsUsage: " ", // can't be the empty string or we get the default output
 			Hidden:    false,
@@ -389,7 +402,18 @@ func StartServer(c *cli.Context, version string, shutdownC, graceShutdownC chan
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
-			errC <- websocket.StartProxyServer(logger, listener, host, shutdownC)
+			streamHandler := websocket.DefaultStreamHandler
+			if c.IsSet(socks5Flag) {
+				logger.Info("SOCKS5 server started")
+				streamHandler = func(wsConn *websocket.Conn, remoteConn net.Conn) {
+					dialer := socks.NewConnDialer(remoteConn)
+					requestHandler := socks.NewRequestHandler(dialer)
+					socksServer := socks.NewConnectionHandler(requestHandler)
+
+					socksServer.Serve(wsConn)
+				}
+			}
+			errC <- websocket.StartProxyServer(logger, listener, host, shutdownC, streamHandler)
 		}()
 		c.Set("url", "http://"+listener.Addr().String())
 	}
@@ -399,12 +423,17 @@ func StartServer(c *cli.Context, version string, shutdownC, graceShutdownC chan
 		return err
 	}
 
+	reconnectCh := make(chan origin.ReconnectSignal, 1)
+	if c.IsSet("stdin-control") {
+		logger.Warn("Enabling control through stdin")
+		go stdinControl(reconnectCh)
+	}
+
 	wg.Add(1)
 	go func() {
 		defer wg.Done()
-		errC <- origin.StartTunnelDaemon(ctx, tunnelConfig, connectedSignal, cloudflaredID)
+		errC <- origin.StartTunnelDaemon(ctx, tunnelConfig, connectedSignal, cloudflaredID, reconnectCh)
 	}()
-
 	return waitToShutdown(&wg, errC, shutdownC, graceShutdownC, c.Duration("grace-period"))
 }
 
@@ -578,9 +607,15 @@ func notifySystemd(waitForSignal *signal.Signal) {
 
 func writePidFile(waitForSignal *signal.Signal, pidFile string) {
 	<-waitForSignal.Wait()
-	file, err := os.Create(pidFile)
+	expandedPath, err := homedir.Expand(pidFile)
 	if err != nil {
-		logger.WithError(err).Errorf("Unable to write pid to %s", pidFile)
+		logger.WithError(err).Errorf("Unable to expand %s, try to use absolute path in --pidfile", pidFile)
+		return
+	}
+	file, err := os.Create(expandedPath)
+	if err != nil {
+		logger.WithError(err).Errorf("Unable to write pid to %s", expandedPath)
+		return
 	}
 	defer file.Close()
 	fmt.Fprintf(file, "%d", os.Getpid())
@@ -596,6 +631,8 @@ func hostnameFromURI(uri string) string {
 		return addPortIfMissing(u, 22)
 	case "rdp":
 		return addPortIfMissing(u, 3389)
+	case "tcp":
+		return addPortIfMissing(u, 7864) // just a random port since there isn't a default in this case
 	}
 	return ""
 }
@@ -690,7 +727,7 @@ func tunnelFlags(shouldHide bool) []cli.Flag {
 		}),
 		altsrc.NewStringSliceFlag(&cli.StringSliceFlag{
 			Name:    "edge",
-			Usage:   "Address of the Cloudflare tunnel server.",
+			Usage:   "Address of the Cloudflare tunnel server. Only works in Cloudflare's internal testing environment.",
 			EnvVars: []string{"TUNNEL_EDGE"},
 			Hidden:  true,
 		}),
@@ -939,6 +976,13 @@ func tunnelFlags(shouldHide bool) []cli.Flag {
 			EnvVars: []string{"TUNNEL_DNS_UPSTREAM"},
 			Hidden:  shouldHide,
 		}),
+		altsrc.NewStringSliceFlag(&cli.StringSliceFlag{
+			Name:    "proxy-dns-bootstrap",
+			Usage:   "bootstrap endpoint URL, you can specify multiple endpoints for redundancy.",
+			Value:   cli.NewStringSlice("https://162.159.36.1/dns-query", "https://162.159.46.1/dns-query", "https://[2606:4700:4700::1111]/dns-query", "https://[2606:4700:4700::1001]/dns-query"),
+			EnvVars: []string{"TUNNEL_DNS_BOOTSTRAP"},
+			Hidden:  shouldHide,
+		}),
 		altsrc.NewDurationFlag(&cli.DurationFlag{
 			Name:    "grace-period",
 			Usage:   "Duration to accept new requests after cloudflared receives first SIGINT/SIGTERM. A second SIGINT/SIGTERM will force cloudflared to shutdown immediately.",
@@ -980,9 +1024,16 @@ func tunnelFlags(shouldHide bool) []cli.Flag {
 		altsrc.NewBoolFlag(&cli.BoolFlag{
 			Name:    "use-reconnect-token",
 			Usage:   "Test reestablishing connections with the new 'reconnect token' flow.",
+			Value:   true,
 			EnvVars: []string{"TUNNEL_USE_RECONNECT_TOKEN"},
 			Hidden:  true,
 		}),
+		altsrc.NewBoolFlag(&cli.BoolFlag{
+			Name:    "use-quick-reconnects",
+			Usage:   "Test reestablishing connections with the new 'connection digest' flow.",
+			EnvVars: []string{"TUNNEL_USE_QUICK_RECONNECTS"},
+			Hidden:  true,
+		}),
 		altsrc.NewDurationFlag(&cli.DurationFlag{
 			Name:    "dial-edge-timeout",
 			Usage:   "Maximum wait time to set up a connection with the edge",
@@ -1051,5 +1102,52 @@ func tunnelFlags(shouldHide bool) []cli.Flag {
 			EnvVars: []string{"HOST_KEY_PATH"},
 			Hidden:  true,
 		}),
+		altsrc.NewBoolFlag(&cli.BoolFlag{
+			Name:    "stdin-control",
+			Usage:   "Control the process using commands sent through stdin",
+			EnvVars: []string{"STDIN-CONTROL"},
+			Hidden:  true,
+			Value:   false,
+		}),
+		altsrc.NewBoolFlag(&cli.BoolFlag{
+			Name:    socks5Flag,
+			Usage:   "specify if this tunnel is running as a SOCK5 Server",
+			EnvVars: []string{"TUNNEL_SOCKS"},
+			Value:   false,
+			Hidden:  false,
+		}),
+	}
+}
+
+func stdinControl(reconnectCh chan origin.ReconnectSignal) {
+	for {
+		scanner := bufio.NewScanner(os.Stdin)
+		for scanner.Scan() {
+			command := scanner.Text()
+			parts := strings.SplitN(command, " ", 2)
+
+			switch parts[0] {
+			case "":
+				break
+			case "reconnect":
+				var reconnect origin.ReconnectSignal
+				if len(parts) > 1 {
+					var err error
+					if reconnect.Delay, err = time.ParseDuration(parts[1]); err != nil {
+						logger.Error(err.Error())
+						continue
+					}
+				}
+				logger.Infof("Sending reconnect signal %+v", reconnect)
+				reconnectCh <- reconnect
+			default:
+				logger.Warn("Unknown command: ", command)
+				fallthrough
+			case "help":
+				logger.Info(`Supported command: 
+reconnect [delay] 
+- restarts one randomly chosen connection with optional delay before reconnect`)
+			}
+		}
 	}
 }

cmd/cloudflared/tunnel/configuration.go

@@ -14,7 +14,7 @@ import (
 
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/buildinfo"
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/config"
-	"github.com/cloudflare/cloudflared/connection"
+	"github.com/cloudflare/cloudflared/edgediscovery"
 	"github.com/cloudflare/cloudflared/origin"
 	"github.com/cloudflare/cloudflared/tlsconfig"
 	tunnelpogs "github.com/cloudflare/cloudflared/tunnelrpc/pogs"
@@ -237,7 +237,6 @@ func prepareTunnelConfig(
 	err = validation.ValidateHTTPService(originURL, hostname, httpTransport)
 	if err != nil {
 		logger.WithError(err).Error("unable to connect to the origin")
-		return nil, errors.Wrap(err, "unable to connect to the origin")
 	}
 
 	toEdgeTLSConfig, err := tlsconfig.CreateTunnelConfig(c)
@@ -277,16 +276,17 @@ func prepareTunnelConfig(
 		TransportLogger:      transportLogger,
 		UseDeclarativeTunnel: c.Bool("use-declarative-tunnels"),
 		UseReconnectToken:    c.Bool("use-reconnect-token"),
+		UseQuickReconnects:   c.Bool("use-quick-reconnects"),
 	}, nil
 }
 
-func serviceDiscoverer(c *cli.Context, logger *logrus.Logger) (connection.EdgeServiceDiscoverer, error) {
+func serviceDiscoverer(c *cli.Context, logger *logrus.Logger) (*edgediscovery.Edge, error) {
 	// If --edge is specfied, resolve edge server addresses
 	if len(c.StringSlice("edge")) > 0 {
-		return connection.NewEdgeHostnameResolver(c.StringSlice("edge"))
+		return edgediscovery.StaticEdge(logger, c.StringSlice("edge"))
 	}
 	// Otherwise lookup edge server addresses through service discovery
-	return connection.NewEdgeAddrResolver(logger)
+	return edgediscovery.ResolveEdge(logger)
 }
 
 func isRunningFromTerminal() bool {

cmd/cloudflared/tunnel/server.go

@@ -14,7 +14,7 @@ func runDNSProxyServer(c *cli.Context, dnsReadySignal, shutdownC chan struct{})
 		logger.Errorf("The 'proxy-dns-port' must be a valid port number in <1, 65535> range.")
 		return errors.New("The 'proxy-dns-port' must be a valid port number in <1, 65535> range.")
 	}
-	listener, err := tunneldns.CreateListener(c.String("proxy-dns-address"), uint16(port), c.StringSlice("proxy-dns-upstream"))
+	listener, err := tunneldns.CreateListener(c.String("proxy-dns-address"), uint16(port), c.StringSlice("proxy-dns-upstream"), c.StringSlice("proxy-dns-bootstrap"))
 	if err != nil {
 		close(dnsReadySignal)
 		listener.Stop()

cmd/cloudflared/tunnel/signal.go

@@ -17,9 +17,11 @@ func waitForSignal(errC chan error, shutdownC chan struct{}) error {
 
 	select {
 	case err := <-errC:
+		logger.Infof("terminating due to error: %v", err)
 		close(shutdownC)
 		return err
-	case <-signals:
+	case s := <-signals:
+		logger.Infof("terminating due to signal %s", s)
 		close(shutdownC)
 	case <-shutdownC:
 	}
@@ -44,10 +46,12 @@ func waitForSignalWithGraceShutdown(errC chan error,
 
 	select {
 	case err := <-errC:
+		logger.Infof("Initiating graceful shutdown due to %v ...", err)
 		close(graceShutdownC)
 		close(shutdownC)
 		return err
-	case <-signals:
+	case s := <-signals:
+		logger.Infof("Initiating graceful shutdown due to signal %s ...", s)
 		close(graceShutdownC)
 		waitForGracePeriod(signals, errC, shutdownC, gracePeriod)
 	case <-graceShutdownC:
@@ -64,7 +68,6 @@ func waitForGracePeriod(signals chan os.Signal,
 	shutdownC chan struct{},
 	gracePeriod time.Duration,
 ) {
-	logger.Infof("Initiating graceful shutdown...")
 	// Unregister signal handler early, so the client can send a second SIGTERM/SIGINT
 	// to force shutdown cloudflared
 	signal.Stop(signals)

cmd/cloudflared/updater/update.go

@@ -2,6 +2,7 @@ package updater
 
 import (
 	"context"
+	"fmt"
 	"os"
 	"runtime"
 	"time"
@@ -32,6 +33,33 @@ EKx0BZogHSor9Wy5VztdFaAaVbsJiCbO
 	logger = log.CreateLogger()
 )
 
+// BinaryUpdated implements ExitCoder interface, the app will exit with status code 11
+// https://pkg.go.dev/gopkg.in/urfave/cli.v2?tab=doc#ExitCoder
+type statusSuccess struct {
+	newVersion string
+}
+
+func (u *statusSuccess) Error() string {
+	return fmt.Sprintf("cloudflared has been updated to version %s", u.newVersion)
+}
+
+func (u *statusSuccess) ExitCode() int {
+	return 11
+}
+
+// UpdateErr implements ExitCoder interface, the app will exit with status code 10
+type statusErr struct {
+	err error
+}
+
+func (e *statusErr) Error() string {
+	return fmt.Sprintf("failed to update cloudflared: %v", e.err)
+}
+
+func (e *statusErr) ExitCode() int {
+	return 10
+}
+
 type UpdateOutcome struct {
 	Updated bool
 	Version string
@@ -67,14 +95,15 @@ func checkForUpdateAndApply() UpdateOutcome {
 func Update(_ *cli.Context) error {
 	updateOutcome := loggedUpdate()
 	if updateOutcome.Error != nil {
-		os.Exit(10)
+		return &statusErr{updateOutcome.Error}
 	}
 
 	if updateOutcome.noUpdate() {
 		logger.Infof("cloudflared is up to date (%s)", updateOutcome.Version)
+		return nil
 	}
 
-	return updateOutcome.Error
+	return &statusSuccess{newVersion: updateOutcome.Version}
 }
 
 // Checks for an update and applies it if one is available
@@ -126,15 +155,19 @@ func (a *AutoUpdater) Run(ctx context.Context) error {
 			updateOutcome := loggedUpdate()
 			if updateOutcome.Updated {
 				os.Args = append(os.Args, "--is-autoupdated=true")
-				pid, err := a.listeners.StartProcess()
-				if err != nil {
-					logger.WithError(err).Error("Unable to restart server automatically")
-					return err
+				if IsSysV() {
+					// SysV doesn't have a mechanism to keep service alive, we have to restart the process
+					logger.Infof("Restarting service managed by SysV...")
+					pid, err := a.listeners.StartProcess()
+					if err != nil {
+						logger.WithError(err).Error("Unable to restart server automatically")
+						return &statusErr{err: err}
+					}
+					// stop old process after autoupdate. Otherwise we create a new process
+					// after each update
+					logger.Infof("PID of the new process is %d", pid)
 				}
-				// stop old process after autoupdate. Otherwise we create a new process
-				// after each update
-				logger.Infof("PID of the new process is %d", pid)
-				return nil
+				return &statusSuccess{newVersion: updateOutcome.Version}
 			}
 		}
 		select {
@@ -187,3 +220,14 @@ func SupportAutoUpdate() bool {
 func isRunningFromTerminal() bool {
 	return terminal.IsTerminal(int(os.Stdout.Fd()))
 }
+
+func IsSysV() bool {
+	if runtime.GOOS != "linux" {
+		return false
+	}
+
+	if _, err := os.Stat("/run/systemd/system"); err == nil {
+		return false
+	}
+	return true
+}

connection/connection.go

@@ -18,9 +18,11 @@ const (
 )
 
 type Connection struct {
-	id    uuid.UUID
-	muxer *h2mux.Muxer
-	addr  *net.TCPAddr
+	id          uuid.UUID
+	muxer       *h2mux.Muxer
+	addr        *net.TCPAddr
+	isLongLived bool
+	longLivedID int
 }
 
 func newConnection(muxer *h2mux.Muxer, addr *net.TCPAddr) (*Connection, error) {

connection/discovery.go

@@ -1,420 +0,0 @@
-package connection
-
-import (
-	"context"
-	"crypto/tls"
-	"fmt"
-	"math/rand"
-	"net"
-	"sync"
-	"time"
-
-	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-)
-
-const (
-	// Used to discover HA origintunneld servers
-	srvService = "origintunneld"
-	srvProto   = "tcp"
-	srvName    = "argotunnel.com"
-
-	// Used to fallback to DoT when we can't use the default resolver to
-	// discover HA origintunneld servers (GitHub issue #75).
-	dotServerName = "cloudflare-dns.com"
-	dotServerAddr = "1.1.1.1:853"
-	dotTimeout    = time.Duration(15 * time.Second)
-
-	// SRV record resolution TTL
-	resolveEdgeAddrTTL = 1 * time.Hour
-
-	subsystemEdgeAddrResolver = "edgeAddrResolver"
-)
-
-// Redeclare network functions so they can be overridden in tests.
-var (
-	netLookupSRV = net.LookupSRV
-	netLookupIP  = net.LookupIP
-)
-
-// If the call to net.LookupSRV fails, try to fall back to DoT from Cloudflare directly.
-//
-// Note: Instead of DoT, we could also have used DoH. Either of these:
-//     - directly via the JSON API (https://1.1.1.1/dns-query?ct=application/dns-json&name=_origintunneld._tcp.argotunnel.com&type=srv)
-//     - indirectly via `tunneldns.NewUpstreamHTTPS()`
-// But both of these cases miss out on a key feature from the stdlib:
-//     "The returned records are sorted by priority and randomized by weight within a priority."
-//     (https://golang.org/pkg/net/#Resolver.LookupSRV)
-// Does this matter? I don't know. It may someday. Let's use DoT so we don't need to worry about it.
-// See also: Go feature request for stdlib-supported DoH: https://github.com/golang/go/issues/27552
-var fallbackLookupSRV = lookupSRVWithDOT
-
-var friendlyDNSErrorLines = []string{
-	`Please try the following things to diagnose this issue:`,
-	`  1. ensure that argotunnel.com is returning "origintunneld" service records.`,
-	`     Run your system's equivalent of: dig srv _origintunneld._tcp.argotunnel.com`,
-	`  2. ensure that your DNS resolver is not returning compressed SRV records.`,
-	`     See GitHub issue https://github.com/golang/go/issues/27546`,
-	`     For example, you could use Cloudflare's 1.1.1.1 as your resolver:`,
-	`     https://developers.cloudflare.com/1.1.1.1/setting-up-1.1.1.1/`,
-}
-
-// EdgeServiceDiscoverer is an interface for looking up Cloudflare's edge network addresses
-type EdgeServiceDiscoverer interface {
-	// Addr returns an unused address to connect to cloudflare's edge network.
-	// Before this method returns, the address will be removed from the pool of available addresses,
-	// so the caller can assume they have exclusive access to the address for tunneling purposes.
-	// The caller should remember to put it back via ReplaceAddr or MarkAddrBad.
-	Addr() (*net.TCPAddr, error)
-	// AnyAddr returns an address to connect to cloudflare's edge network.
-	// It may or may not be in active use for a tunnel.
-	// The caller should NOT return it via ReplaceAddr or MarkAddrBad!
-	AnyAddr() (*net.TCPAddr, error)
-	// ReplaceAddr is called when the address is no longer needed, e.g. due to a scaling-down of numHAConnections.
-	// It returns the address to the pool of available addresses.
-	ReplaceAddr(addr *net.TCPAddr)
-	// MarkAddrBad is called when there was a connectivity error for the address.
-	// It marks the address as unused but doesn't return it to the pool of available addresses.
-	MarkAddrBad(addr *net.TCPAddr)
-	// AvailableAddrs returns the number of addresses available for use
-	// (less those that have been marked bad).
-	AvailableAddrs() int
-	// Refresh rediscovers Cloudflare's edge network addresses.
-	// It resets the state of "bad" addresses but not those in active use.
-	Refresh() error
-}
-
-// EdgeAddrResolver discovers the addresses of Cloudflare's edge network through SRV record.
-// It implements EdgeServiceDiscoverer interface
-type EdgeAddrResolver struct {
-	sync.Mutex
-	// HA regions
-	regions []*region
-	// Logger for noteworthy events
-	logger *logrus.Entry
-}
-
-type region struct {
-	// Addresses that we expect will be in active use
-	addrs []*net.TCPAddr
-	// Addresses that are in active use.
-	// This is actually a set of net.TCPAddr's, but we can't make a map like
-	//     map[net.TCPAddr]bool
-	// since net.TCPAddr contains a field of type net.IP and therefore it cannot be used as a map key.
-	// So instead we use map[string]*net.TCPAddr, where the keys are obtained by net.TCPAddr.String().
-	// (We keep the "raw" *net.TCPAddr values for the convenience of AnyAddr(). If that method didn't
-	// exist, we wouldn't strictly need the values, and this could be a map[string]bool.)
-	inUse map[string]*net.TCPAddr
-	// Addresses that were discarded due to a network error.
-	// Not sure what we'll do with these, but it feels good to keep them around for now.
-	bad []*net.TCPAddr
-}
-
-func NewEdgeAddrResolver(logger *logrus.Logger) (EdgeServiceDiscoverer, error) {
-	r := &EdgeAddrResolver{
-		logger: logger.WithField("subsystem", subsystemEdgeAddrResolver),
-	}
-	if err := r.Refresh(); err != nil {
-		return nil, err
-	}
-	return r, nil
-}
-
-func (r *EdgeAddrResolver) Addr() (*net.TCPAddr, error) {
-	r.Lock()
-	defer r.Unlock()
-
-	// compute the largest region based on len(addrs)
-	var largestRegion *region
-	{
-		if len(r.regions) == 0 {
-			return nil, errors.New("No HA regions")
-		}
-		largestRegion = r.regions[0]
-		for _, region := range r.regions[1:] {
-			if len(region.addrs) > len(largestRegion.addrs) {
-				largestRegion = region
-			}
-		}
-		if len(largestRegion.addrs) == 0 {
-			return nil, errors.New("No IP address to claim")
-		}
-	}
-
-	var addr *net.TCPAddr
-	addr, largestRegion.addrs = popAddr(largestRegion.addrs)
-	largestRegion.inUse[addr.String()] = addr
-	return addr, nil
-}
-
-func (r *EdgeAddrResolver) AnyAddr() (*net.TCPAddr, error) {
-	r.Lock()
-	defer r.Unlock()
-	for _, region := range r.regions {
-		// return an unused addr
-		if len(region.addrs) > 0 {
-			return region.addrs[rand.Intn(len(region.addrs))], nil
-		}
-		// return an addr that's in use
-		for _, addr := range region.inUse {
-			return addr, nil
-		}
-	}
-	return nil, fmt.Errorf("No IP addresses")
-}
-
-func (r *EdgeAddrResolver) ReplaceAddr(addr *net.TCPAddr) {
-	r.Lock()
-	defer r.Unlock()
-	addrString := addr.String()
-	for _, region := range r.regions {
-		if _, ok := region.inUse[addrString]; ok {
-			delete(region.inUse, addrString)
-			region.addrs = append(region.addrs, addr)
-			break
-		}
-	}
-}
-
-func (r *EdgeAddrResolver) MarkAddrBad(addr *net.TCPAddr) {
-	r.Lock()
-	defer r.Unlock()
-	addrString := addr.String()
-	for _, region := range r.regions {
-		if _, ok := region.inUse[addrString]; ok {
-			delete(region.inUse, addrString)
-			region.bad = append(region.bad, addr)
-			break
-		}
-	}
-}
-
-func (r *EdgeAddrResolver) AvailableAddrs() int {
-	r.Lock()
-	defer r.Unlock()
-	result := 0
-	for _, region := range r.regions {
-		result += len(region.addrs)
-	}
-	return result
-}
-
-func (r *EdgeAddrResolver) Refresh() error {
-	addrLists, err := EdgeDiscovery(r.logger)
-	if err != nil {
-		return err
-	}
-
-	r.Lock()
-	defer r.Unlock()
-	inUse := allInUse(r.regions)
-	r.regions = makeHARegions(addrLists, inUse)
-	return nil
-}
-
-// EdgeDiscovery implements HA service discovery lookup.
-func EdgeDiscovery(logger *logrus.Entry) ([][]*net.TCPAddr, error) {
-	_, addrs, err := netLookupSRV(srvService, srvProto, srvName)
-	if err != nil {
-		_, fallbackAddrs, fallbackErr := fallbackLookupSRV(srvService, srvProto, srvName)
-		if fallbackErr != nil || len(fallbackAddrs) == 0 {
-			// use the original DNS error `err` in messages, not `fallbackErr`
-			logger.Errorln("Error looking up Cloudflare edge IPs: the DNS query failed:", err)
-			for _, s := range friendlyDNSErrorLines {
-				logger.Errorln(s)
-			}
-			return nil, errors.Wrapf(err, "Could not lookup srv records on _%v._%v.%v", srvService, srvProto, srvName)
-		}
-		// Accept the fallback results and keep going
-		addrs = fallbackAddrs
-	}
-
-	var resolvedIPsPerCNAME [][]*net.TCPAddr
-	for _, addr := range addrs {
-		ips, err := resolveSRVToTCP(addr)
-		if err != nil {
-			return nil, err
-		}
-		resolvedIPsPerCNAME = append(resolvedIPsPerCNAME, ips)
-	}
-
-	return resolvedIPsPerCNAME, nil
-}
-
-func lookupSRVWithDOT(service, proto, name string) (cname string, addrs []*net.SRV, err error) {
-	// Inspiration: https://github.com/artyom/dot/blob/master/dot.go
-	r := &net.Resolver{
-		PreferGo: true,
-		Dial: func(ctx context.Context, _ string, _ string) (net.Conn, error) {
-			var dialer net.Dialer
-			conn, err := dialer.DialContext(ctx, "tcp", dotServerAddr)
-			if err != nil {
-				return nil, err
-			}
-			tlsConfig := &tls.Config{ServerName: dotServerName}
-			return tls.Client(conn, tlsConfig), nil
-		},
-	}
-	ctx, cancel := context.WithTimeout(context.Background(), dotTimeout)
-	defer cancel()
-	return r.LookupSRV(ctx, srvService, srvProto, srvName)
-}
-
-func resolveSRVToTCP(srv *net.SRV) ([]*net.TCPAddr, error) {
-	ips, err := netLookupIP(srv.Target)
-	if err != nil {
-		return nil, errors.Wrapf(err, "Couldn't resolve SRV record %v", srv)
-	}
-	if len(ips) == 0 {
-		return nil, fmt.Errorf("SRV record %v had no IPs", srv)
-	}
-	addrs := make([]*net.TCPAddr, len(ips))
-	for i, ip := range ips {
-		addrs[i] = &net.TCPAddr{IP: ip, Port: int(srv.Port)}
-	}
-	return addrs, nil
-}
-
-// EdgeHostnameResolver discovers the addresses of Cloudflare's edge network via a list of server hostnames.
-// It implements EdgeServiceDiscoverer interface, and is used mainly for testing connectivity.
-type EdgeHostnameResolver struct {
-	sync.Mutex
-	// hostnames of edge servers
-	hostnames []string
-	// Addrs to connect to cloudflare's edge network
-	addrs []*net.TCPAddr
-	// Addresses that are in active use.
-	// This is actually a set of net.TCPAddr's. We have to encode the keys
-	// with .String(), since net.TCPAddr contains a field of type net.IP and
-	// therefore it cannot be used as a map key
-	inUse map[string]*net.TCPAddr
-	// Addresses that were discarded due to a network error.
-	// Not sure what we'll do with these, but it feels good to keep them around for now.
-	bad []*net.TCPAddr
-}
-
-func NewEdgeHostnameResolver(edgeHostnames []string) (EdgeServiceDiscoverer, error) {
-	r := &EdgeHostnameResolver{
-		hostnames: edgeHostnames,
-		inUse:     map[string]*net.TCPAddr{},
-	}
-	if err := r.Refresh(); err != nil {
-		return nil, err
-	}
-	return r, nil
-}
-
-func (r *EdgeHostnameResolver) Addr() (*net.TCPAddr, error) {
-	r.Lock()
-	defer r.Unlock()
-	if len(r.addrs) == 0 {
-		return nil, errors.New("No IP address to claim")
-	}
-	var addr *net.TCPAddr
-	addr, r.addrs = popAddr(r.addrs)
-	r.inUse[addr.String()] = addr
-	return addr, nil
-}
-
-func (r *EdgeHostnameResolver) AnyAddr() (*net.TCPAddr, error) {
-	r.Lock()
-	defer r.Unlock()
-	// return an unused addr
-	if len(r.addrs) > 0 {
-		return r.addrs[rand.Intn(len(r.addrs))], nil
-	}
-	// return an addr that's in use
-	for _, addr := range r.inUse {
-		return addr, nil
-	}
-	return nil, errors.New("No IP addresses")
-}
-
-func (r *EdgeHostnameResolver) ReplaceAddr(addr *net.TCPAddr) {
-	r.Lock()
-	defer r.Unlock()
-	delete(r.inUse, addr.String())
-	r.addrs = append(r.addrs, addr)
-}
-func (r *EdgeHostnameResolver) MarkAddrBad(addr *net.TCPAddr) {
-	r.Lock()
-	defer r.Unlock()
-	delete(r.inUse, addr.String())
-	r.bad = append(r.bad, addr)
-}
-
-func (r *EdgeHostnameResolver) AvailableAddrs() int {
-	r.Lock()
-	defer r.Unlock()
-	return len(r.addrs)
-}
-
-func (r *EdgeHostnameResolver) Refresh() error {
-	newAddrs, err := ResolveAddrs(r.hostnames)
-	if err != nil {
-		return err
-	}
-	r.Lock()
-	defer r.Unlock()
-	var notInUse []*net.TCPAddr
-	for _, newAddr := range newAddrs {
-		if _, ok := r.inUse[newAddr.String()]; !ok {
-			notInUse = append(notInUse, newAddr)
-		}
-	}
-	r.addrs = notInUse
-	r.bad = nil
-	return nil
-}
-
-// Resolve TCP address given a list of addresses. Address can be a hostname, however, it will return at most one
-// of the hostname's IP addresses
-func ResolveAddrs(addrs []string) ([]*net.TCPAddr, error) {
-	var tcpAddrs []*net.TCPAddr
-	for _, addr := range addrs {
-		tcpAddr, err := net.ResolveTCPAddr("tcp", addr)
-		if err != nil {
-			return nil, err
-		}
-		tcpAddrs = append(tcpAddrs, tcpAddr)
-	}
-	return tcpAddrs, nil
-}
-
-// Compute total set of IP addresses in use. This is useful if the regions
-// are returned in a different order, or if an IP address is assigned to
-// a different region for some reasion.
-func allInUse(regions []*region) map[string]*net.TCPAddr {
-	result := make(map[string]*net.TCPAddr)
-	for _, region := range regions {
-		for k, v := range region.inUse {
-			result[k] = v
-		}
-	}
-	return result
-}
-
-func makeHARegions(addrLists [][]*net.TCPAddr, inUse map[string]*net.TCPAddr) (regions []*region) {
-	for _, addrList := range addrLists {
-		region := &region{inUse: map[string]*net.TCPAddr{}}
-		for _, addr := range addrList {
-			addrString := addr.String()
-			// No matter what region `addr` used to belong to, it's now a part
-			// of this region, so add it to this region's `inUse` map.
-			if _, ok := inUse[addrString]; ok {
-				region.inUse[addrString] = addr
-			} else {
-				region.addrs = append(region.addrs, addr)
-			}
-		}
-		regions = append(regions, region)
-	}
-	return
-}
-
-func popAddr(addrs []*net.TCPAddr) (*net.TCPAddr, []*net.TCPAddr) {
-	first := addrs[0]
-	addrs[0] = nil // prevent memory leak
-	addrs = addrs[1:]
-	return first, addrs
-}

connection/discovery_test.go

@@ -1,317 +0,0 @@
-package connection
-
-import (
-	"net"
-	"sync"
-	"testing"
-	"testing/quick"
-	"time"
-
-	"github.com/sirupsen/logrus"
-	"github.com/stretchr/testify/assert"
-)
-
-func TestEdgeDiscovery(t *testing.T) {
-	mockAddrs := newMockAddrs(19, 2, 5)
-	netLookupSRV = mockNetLookupSRV(mockAddrs)
-	netLookupIP = mockNetLookupIP(mockAddrs)
-
-	expectedAddrSet := map[string]bool{}
-	for _, addrs := range mockAddrs.addrMap {
-		for _, addr := range addrs {
-			expectedAddrSet[addr.String()] = true
-		}
-	}
-
-	addrLists, err := EdgeDiscovery(logrus.New().WithFields(logrus.Fields{}))
-	assert.NoError(t, err)
-	actualAddrSet := map[string]bool{}
-	for _, addrs := range addrLists {
-		for _, addr := range addrs {
-			actualAddrSet[addr.String()] = true
-		}
-	}
-
-	assert.Equal(t, expectedAddrSet, actualAddrSet)
-}
-
-func TestAllInUse(t *testing.T) {
-	for _, testCase := range []struct {
-		regions  []*region
-		expected map[string]*net.TCPAddr
-	}{
-		{
-			regions:  nil,
-			expected: map[string]*net.TCPAddr{},
-		},
-		{
-			regions: []*region{
-				&region{inUse: map[string]*net.TCPAddr{}},
-				&region{inUse: map[string]*net.TCPAddr{}},
-			},
-			expected: map[string]*net.TCPAddr{},
-		},
-		{
-			regions: []*region{
-				&region{inUse: map[string]*net.TCPAddr{":1": &net.TCPAddr{Port: 1}}},
-				&region{inUse: map[string]*net.TCPAddr{":4": &net.TCPAddr{Port: 4}}},
-			},
-			expected: map[string]*net.TCPAddr{":1": &net.TCPAddr{Port: 1}, ":4": &net.TCPAddr{Port: 4}},
-		},
-	} {
-		actual := allInUse(testCase.regions)
-		assert.Equal(t, testCase.expected, actual)
-	}
-}
-
-func TestMakeRegions(t *testing.T) {
-	for _, testCase := range []struct {
-		addrList [][]*net.TCPAddr
-		inUse    map[string]*net.TCPAddr
-		expected []*region
-	}{
-		{
-			addrList: [][]*net.TCPAddr{},
-			expected: nil,
-		},
-		{
-			addrList: [][]*net.TCPAddr{
-				[]*net.TCPAddr{&net.TCPAddr{Port: 1}, &net.TCPAddr{Port: 2}},
-			},
-			expected: []*region{
-				&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 1}, &net.TCPAddr{Port: 2}}, inUse: map[string]*net.TCPAddr{}},
-			},
-		},
-		{
-			addrList: [][]*net.TCPAddr{
-				[]*net.TCPAddr{&net.TCPAddr{Port: 1}, &net.TCPAddr{Port: 2}},
-				[]*net.TCPAddr{&net.TCPAddr{Port: 3}, &net.TCPAddr{Port: 4}},
-			},
-			expected: []*region{
-				&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 1}, &net.TCPAddr{Port: 2}}, inUse: map[string]*net.TCPAddr{}},
-				&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 3}, &net.TCPAddr{Port: 4}}, inUse: map[string]*net.TCPAddr{}},
-			},
-		},
-		{
-			addrList: [][]*net.TCPAddr{
-				[]*net.TCPAddr{&net.TCPAddr{Port: 1}, &net.TCPAddr{Port: 2}},
-				[]*net.TCPAddr{&net.TCPAddr{Port: 3}, &net.TCPAddr{Port: 4}},
-			},
-			inUse: map[string]*net.TCPAddr{
-				":1": &net.TCPAddr{Port: 1},
-				":4": &net.TCPAddr{Port: 4},
-			},
-			expected: []*region{
-				&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 2}}, inUse: map[string]*net.TCPAddr{":1": &net.TCPAddr{Port: 1}}},
-				&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 3}}, inUse: map[string]*net.TCPAddr{":4": &net.TCPAddr{Port: 4}}},
-			},
-		},
-	} {
-		actual := makeHARegions(testCase.addrList, testCase.inUse)
-		assert.Equal(t, testCase.expected, actual)
-	}
-}
-
-func assertIsBalanced(t *testing.T, regions []*region) bool {
-	// Compute max(len(region.addrs) for region in regions)
-	// No region should have significantly fewer addresses than this
-	var longestAddrs int
-	{
-		longestAddrs = 0
-		for _, region := range regions {
-			if l := len(region.addrs); l > longestAddrs {
-				longestAddrs = l
-			}
-		}
-	}
-	for _, region := range regions {
-		if len(region.addrs) == longestAddrs || len(region.addrs) == longestAddrs-1 {
-			continue
-		}
-		return assert.Fail(t,
-			"found a region with %v free addrs, while the longest addrs list is %v",
-			len(region.addrs), longestAddrs)
-	}
-	return true
-}
-
-// Various end-to-end tests, run with quickcheck (i.e. the testing/quick package)
-func TestEdgeAddrResolver(t *testing.T) {
-	concurrentReplacement := func(mockAddrs mockAddrs) bool {
-		netLookupSRV = mockNetLookupSRV(mockAddrs)
-		netLookupIP = mockNetLookupIP(mockAddrs)
-
-		resolver, err := NewEdgeAddrResolver(logrus.New())
-		if !assert.NoError(t, err) {
-			return false
-		}
-		assert.Equal(t, mockAddrs.numAddrs, resolver.AvailableAddrs(),
-			"every address should be initially available")
-
-		// Create several goroutines to simulate HA connections that acquire
-		// and replace IP addresses.
-		var wg sync.WaitGroup
-		wg.Add(mockAddrs.numAddrs)
-		for i := 0; i < mockAddrs.numAddrs; i++ {
-			go func() {
-				defer wg.Done()
-				const reconnectionCount = 50
-				for i := 0; i < reconnectionCount; i++ {
-					if resolver.AvailableAddrs() == 0 {
-						err = resolver.Refresh()
-						assert.NoError(t, err)
-					}
-					addr, err := resolver.Addr()
-					if !assert.NoError(t, err) {
-						return
-					}
-					time.Sleep(0) // allow some other goroutine to run
-					resolver.ReplaceAddr(addr)
-					time.Sleep(0) // allow some other goroutine to run
-				}
-			}()
-		}
-		wg.Wait()
-		assert.Equal(t, mockAddrs.numAddrs, resolver.AvailableAddrs(),
-			"every address should be available after replacement")
-		return !t.Failed()
-	}
-
-	badAddrWithRefresh := func(mockAddrs mockAddrs) bool {
-		netLookupSRV = mockNetLookupSRV(mockAddrs)
-		netLookupIP = mockNetLookupIP(mockAddrs)
-
-		resolver, err := NewEdgeAddrResolver(logrus.New())
-		if !assert.NoError(t, err) {
-			return false
-		}
-		assert.Equal(t, mockAddrs.numAddrs, resolver.AvailableAddrs(),
-			"every address should be initially available")
-
-		var addrs []*net.TCPAddr
-		for i := 0; i < mockAddrs.numAddrs; i++ {
-			assert.Equal(t, mockAddrs.numAddrs-i, resolver.AvailableAddrs())
-			addr, err := resolver.Addr()
-			assert.NoError(t, err)
-			addrs = append(addrs, addr)
-		}
-		assert.Equal(t, 0, resolver.AvailableAddrs(), "all addresses should have been taken")
-		_, err = resolver.Addr()
-		assert.Error(t, err)
-
-		anyAddr, err := resolver.AnyAddr()
-		assert.NoError(t, err, "should still be okay to call AnyAddr")
-
-		resolver.MarkAddrBad(anyAddr)
-
-		assert.Equal(t, 0, resolver.AvailableAddrs(), "all addresses should still be used")
-		_, err = resolver.Addr()
-		assert.Error(t, err, "all addresses should still be used")
-
-		err = resolver.Refresh()
-		assert.NoError(t, err, "Refresh() should have worked")
-
-		assert.Equal(t, 1, resolver.AvailableAddrs(),
-			"Refresh() should have reset the state of the 'bad' address")
-		addr, err := resolver.Addr()
-		assert.NoError(t, err)
-		assert.Equal(t, anyAddr, addr)
-
-		_, err = resolver.Addr()
-		assert.Error(t, err, "all addresses should be used again")
-
-		return !t.Failed()
-	}
-
-	assert.NoError(t, quick.Check(concurrentReplacement, nil))
-	assert.NoError(t, quick.Check(badAddrWithRefresh, nil))
-}
-
-// "White-box" test: runs Addr() and checks internal state
-func TestEdgeAddrResolver_Addr(t *testing.T) {
-	e := &EdgeAddrResolver{regions: nil}
-	addr, err := e.Addr()
-	assert.Error(t, err)
-
-	testRegions := func() []*region {
-		return []*region{
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 1}}, inUse: map[string]*net.TCPAddr{":2": &net.TCPAddr{Port: 2}, ":3": &net.TCPAddr{Port: 3}}},
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 4}, &net.TCPAddr{Port: 5}}, inUse: map[string]*net.TCPAddr{":6": &net.TCPAddr{Port: 6}}},
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 7}, &net.TCPAddr{Port: 8}}, inUse: map[string]*net.TCPAddr{":9": &net.TCPAddr{Port: 9}}},
-		}
-	}
-	e = &EdgeAddrResolver{regions: testRegions()}
-	addr, err = e.Addr()
-	assert.NoError(t, err)
-	assert.Equal(t, &net.TCPAddr{Port: 4}, addr)
-	var expected []*region
-	{
-		expected = testRegions()
-		expected[1].addrs = expected[1].addrs[1:]
-		expected[1].inUse[":4"] = &net.TCPAddr{Port: 4}
-	}
-	assert.Equal(t, expected, e.regions)
-}
-
-// "White-box" test: runs AnyAddr() and checks internal state
-func TestEdgeAddrResolver_AnyAddr(t *testing.T) {
-	e := &EdgeAddrResolver{regions: nil}
-	addr, err := e.AnyAddr()
-	assert.Error(t, err)
-
-	e = &EdgeAddrResolver{regions: []*region{&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 1}}, inUse: map[string]*net.TCPAddr{":2": &net.TCPAddr{Port: 2}}}}}
-	addr, err = e.AnyAddr()
-	assert.NoError(t, err)
-	assert.Equal(t, &net.TCPAddr{Port: 1}, addr, "should have chosen the inactive address")
-
-	e = &EdgeAddrResolver{regions: []*region{&region{inUse: map[string]*net.TCPAddr{":1": &net.TCPAddr{Port: 1}}}}}
-	addr, err = e.AnyAddr()
-	assert.NoError(t, err)
-	assert.Equal(t, &net.TCPAddr{Port: 1}, addr, "should have chosen an active address rather than nothing")
-}
-
-// "White-box" test: runs ReplaceAddr() and checks internal state
-func TestEdgeAddrResolver_ReplaceAddr(t *testing.T) {
-	e := &EdgeAddrResolver{regions: nil}
-	e.ReplaceAddr(&net.TCPAddr{Port: 1}) // this shouldn't panic, I guess
-
-	testRegions := func() []*region {
-		return []*region{
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 1}}, inUse: map[string]*net.TCPAddr{":2": &net.TCPAddr{Port: 2}, ":3": &net.TCPAddr{Port: 3}}},
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 4}, &net.TCPAddr{Port: 5}}, inUse: map[string]*net.TCPAddr{":6": &net.TCPAddr{Port: 6}}},
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 7}, &net.TCPAddr{Port: 8}}, inUse: map[string]*net.TCPAddr{":9": &net.TCPAddr{Port: 9}}},
-		}
-	}
-	e = &EdgeAddrResolver{regions: testRegions()}
-	e.ReplaceAddr(&net.TCPAddr{Port: 6})
-	var expected []*region
-	{
-		expected = testRegions()
-		delete(expected[1].inUse, ":6")
-		expected[1].addrs = append(expected[1].addrs, &net.TCPAddr{Port: 6})
-	}
-	assert.Equal(t, expected, e.regions)
-}
-
-// "White-box" test: runs MarkAddrBad() and checks internal state
-func TestEdgeAddrResolver_MarkAddrBad(t *testing.T) {
-	e := &EdgeAddrResolver{regions: nil}
-	e.ReplaceAddr(&net.TCPAddr{Port: 1}) // this shouldn't panic, I guess
-
-	testRegions := func() []*region {
-		return []*region{
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 1}}, inUse: map[string]*net.TCPAddr{":2": &net.TCPAddr{Port: 2}, ":3": &net.TCPAddr{Port: 3}}},
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 4}, &net.TCPAddr{Port: 5}}, inUse: map[string]*net.TCPAddr{":6": &net.TCPAddr{Port: 6}}},
-			&region{addrs: []*net.TCPAddr{&net.TCPAddr{Port: 7}, &net.TCPAddr{Port: 8}}, inUse: map[string]*net.TCPAddr{":9": &net.TCPAddr{Port: 9}}},
-		}
-	}
-	e = &EdgeAddrResolver{regions: testRegions()}
-	e.MarkAddrBad(&net.TCPAddr{Port: 6})
-	var expected []*region
-	{
-		expected = testRegions()
-		delete(expected[1].inUse, ":6")
-		expected[1].bad = append(expected[1].bad, &net.TCPAddr{Port: 6})
-	}
-	assert.Equal(t, expected, e.regions)
-}

connection/manager.go

@@ -13,6 +13,7 @@ import (
 	"github.com/sirupsen/logrus"
 
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/buildinfo"
+	"github.com/cloudflare/cloudflared/edgediscovery"
 	"github.com/cloudflare/cloudflared/h2mux"
 	"github.com/cloudflare/cloudflared/streamhandler"
 	tunnelpogs "github.com/cloudflare/cloudflared/tunnelrpc/pogs"
@@ -35,7 +36,7 @@ type EdgeManager struct {
 	// cloudflaredConfig is the cloudflared configuration that is determined when the process first starts
 	cloudflaredConfig *CloudflaredConfig
 	// serviceDiscoverer returns the next edge addr to connect to
-	serviceDiscoverer EdgeServiceDiscoverer
+	serviceDiscoverer *edgediscovery.Edge
 	// state is attributes of ConnectionManager that can change during runtime.
 	state *edgeManagerState
 
@@ -73,7 +74,7 @@ func NewEdgeManager(
 	edgeConnMgrConfigurable *EdgeManagerConfigurable,
 	userCredential []byte,
 	tlsConfig *tls.Config,
-	serviceDiscoverer EdgeServiceDiscoverer,
+	serviceDiscoverer *edgediscovery.Edge,
 	cloudflaredConfig *CloudflaredConfig,
 	logger *logrus.Logger,
 ) *EdgeManager {
@@ -91,27 +92,29 @@ func NewEdgeManager(
 func (em *EdgeManager) Run(ctx context.Context) error {
 	defer em.shutdown()
 
-	resolveEdgeIPTicker := time.Tick(resolveEdgeAddrTTL)
+	// Currently, declarative tunnels don't have any concept of a stable connection
+	// Each edge connection is transient and when it dies, it is replaced by a different one,
+	// not restarted.
+	// So in the future we should really change this so that n connections are stored individually
+	connIndex := 0
 	for {
 		select {
 		case <-ctx.Done():
 			return errors.Wrap(ctx.Err(), "EdgeConnectionManager terminated")
-		case <-resolveEdgeIPTicker:
-			if err := em.serviceDiscoverer.Refresh(); err != nil {
-				em.logger.WithError(err).Warn("Cannot refresh Cloudflare edge addresses")
-			}
 		default:
 			time.Sleep(1 * time.Second)
 		}
 		// Create/delete connection one at a time, so we don't need to adjust for connections that are being created/deleted
 		// in shouldCreateConnection or shouldReduceConnection calculation
 		if em.state.shouldCreateConnection(em.serviceDiscoverer.AvailableAddrs()) {
-			if connErr := em.newConnection(ctx); connErr != nil {
+			if connErr := em.newConnection(ctx, connIndex); connErr != nil {
 				if !connErr.ShouldRetry {
 					em.logger.WithError(connErr).Error(em.noRetryMessage())
 					return connErr
 				}
 				em.logger.WithError(connErr).Error("cannot create new connection")
+			} else {
+				connIndex++
 			}
 		} else if em.state.shouldReduceConnection() {
 			if err := em.closeConnection(ctx); err != nil {
@@ -126,8 +129,8 @@ func (em *EdgeManager) UpdateConfigurable(newConfigurable *EdgeManagerConfigurab
 	em.state.updateConfigurable(newConfigurable)
 }
 
-func (em *EdgeManager) newConnection(ctx context.Context) *tunnelpogs.ConnectError {
-	edgeTCPAddr, err := em.serviceDiscoverer.Addr()
+func (em *EdgeManager) newConnection(ctx context.Context, index int) *tunnelpogs.ConnectError {
+	edgeTCPAddr, err := em.serviceDiscoverer.GetAddr(index)
 	if err != nil {
 		return retryConnection(fmt.Sprintf("edge address discovery error: %v", err))
 	}
@@ -197,7 +200,7 @@ func (em *EdgeManager) serveConn(ctx context.Context, conn *Connection) {
 	err := conn.Serve(ctx)
 	em.logger.WithError(err).Warn("Connection closed")
 	em.state.closeConnection(conn)
-	em.serviceDiscoverer.ReplaceAddr(conn.addr)
+	em.serviceDiscoverer.GiveBack(conn.addr)
 }
 
 func (em *EdgeManager) noRetryMessage() string {

connection/manager_test.go

@@ -1,6 +1,7 @@
 package connection
 
 import (
+	"net"
 	"testing"
 	"time"
 
@@ -8,8 +9,8 @@ import (
 	"github.com/sirupsen/logrus"
 	"github.com/stretchr/testify/assert"
 
-
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/buildinfo"
+	"github.com/cloudflare/cloudflared/edgediscovery"
 	"github.com/cloudflare/cloudflared/h2mux"
 	"github.com/cloudflare/cloudflared/streamhandler"
 	"github.com/cloudflare/cloudflared/tunnelrpc/pogs"
@@ -48,14 +49,15 @@ func mockEdgeManager() *EdgeManager {
 	newConfigChan := make(chan<- *pogs.ClientConfig)
 	useConfigResultChan := make(<-chan *pogs.UseConfigurationResult)
 	logger := logrus.New()
+	edge := edgediscovery.MockEdge(logger, []*net.TCPAddr{})
 	return NewEdgeManager(
 		streamhandler.NewStreamHandler(newConfigChan, useConfigResultChan, logger),
 		configurable,
 		[]byte{},
 		nil,
-		&mockEdgeServiceDiscoverer{},
+		edge,
 		cloudflaredConfig,
-		logrus.New(),
+		logger,
 	)
 }
 

edgediscovery/allregions/discovery.go

@@ -0,0 +1,135 @@
+package allregions
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net"
+	"time"
+
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+)
+
+const (
+	// Used to discover HA origintunneld servers
+	srvService = "origintunneld"
+	srvProto   = "tcp"
+	srvName    = "argotunnel.com"
+
+	// Used to fallback to DoT when we can't use the default resolver to
+	// discover HA origintunneld servers (GitHub issue #75).
+	dotServerName = "cloudflare-dns.com"
+	dotServerAddr = "1.1.1.1:853"
+	dotTimeout    = time.Duration(15 * time.Second)
+
+	// SRV record resolution TTL
+	resolveEdgeAddrTTL = 1 * time.Hour
+
+	subsystemEdgeAddrResolver = "edgeAddrResolver"
+)
+
+// Redeclare network functions so they can be overridden in tests.
+var (
+	netLookupSRV = net.LookupSRV
+	netLookupIP  = net.LookupIP
+)
+
+// If the call to net.LookupSRV fails, try to fall back to DoT from Cloudflare directly.
+//
+// Note: Instead of DoT, we could also have used DoH. Either of these:
+//     - directly via the JSON API (https://1.1.1.1/dns-query?ct=application/dns-json&name=_origintunneld._tcp.argotunnel.com&type=srv)
+//     - indirectly via `tunneldns.NewUpstreamHTTPS()`
+// But both of these cases miss out on a key feature from the stdlib:
+//     "The returned records are sorted by priority and randomized by weight within a priority."
+//     (https://golang.org/pkg/net/#Resolver.LookupSRV)
+// Does this matter? I don't know. It may someday. Let's use DoT so we don't need to worry about it.
+// See also: Go feature request for stdlib-supported DoH: https://github.com/golang/go/issues/27552
+var fallbackLookupSRV = lookupSRVWithDOT
+
+var friendlyDNSErrorLines = []string{
+	`Please try the following things to diagnose this issue:`,
+	`  1. ensure that argotunnel.com is returning "origintunneld" service records.`,
+	`     Run your system's equivalent of: dig srv _origintunneld._tcp.argotunnel.com`,
+	`  2. ensure that your DNS resolver is not returning compressed SRV records.`,
+	`     See GitHub issue https://github.com/golang/go/issues/27546`,
+	`     For example, you could use Cloudflare's 1.1.1.1 as your resolver:`,
+	`     https://developers.cloudflare.com/1.1.1.1/setting-up-1.1.1.1/`,
+}
+
+// EdgeDiscovery implements HA service discovery lookup.
+func edgeDiscovery(logger *logrus.Entry) ([][]*net.TCPAddr, error) {
+	_, addrs, err := netLookupSRV(srvService, srvProto, srvName)
+	if err != nil {
+		_, fallbackAddrs, fallbackErr := fallbackLookupSRV(srvService, srvProto, srvName)
+		if fallbackErr != nil || len(fallbackAddrs) == 0 {
+			// use the original DNS error `err` in messages, not `fallbackErr`
+			logger.Errorln("Error looking up Cloudflare edge IPs: the DNS query failed:", err)
+			for _, s := range friendlyDNSErrorLines {
+				logger.Errorln(s)
+			}
+			return nil, errors.Wrapf(err, "Could not lookup srv records on _%v._%v.%v", srvService, srvProto, srvName)
+		}
+		// Accept the fallback results and keep going
+		addrs = fallbackAddrs
+	}
+
+	var resolvedIPsPerCNAME [][]*net.TCPAddr
+	for _, addr := range addrs {
+		ips, err := resolveSRVToTCP(addr)
+		if err != nil {
+			return nil, err
+		}
+		resolvedIPsPerCNAME = append(resolvedIPsPerCNAME, ips)
+	}
+
+	return resolvedIPsPerCNAME, nil
+}
+
+func lookupSRVWithDOT(service, proto, name string) (cname string, addrs []*net.SRV, err error) {
+	// Inspiration: https://github.com/artyom/dot/blob/master/dot.go
+	r := &net.Resolver{
+		PreferGo: true,
+		Dial: func(ctx context.Context, _ string, _ string) (net.Conn, error) {
+			var dialer net.Dialer
+			conn, err := dialer.DialContext(ctx, "tcp", dotServerAddr)
+			if err != nil {
+				return nil, err
+			}
+			tlsConfig := &tls.Config{ServerName: dotServerName}
+			return tls.Client(conn, tlsConfig), nil
+		},
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), dotTimeout)
+	defer cancel()
+	return r.LookupSRV(ctx, srvService, srvProto, srvName)
+}
+
+func resolveSRVToTCP(srv *net.SRV) ([]*net.TCPAddr, error) {
+	ips, err := netLookupIP(srv.Target)
+	if err != nil {
+		return nil, errors.Wrapf(err, "Couldn't resolve SRV record %v", srv)
+	}
+	if len(ips) == 0 {
+		return nil, fmt.Errorf("SRV record %v had no IPs", srv)
+	}
+	addrs := make([]*net.TCPAddr, len(ips))
+	for i, ip := range ips {
+		addrs[i] = &net.TCPAddr{IP: ip, Port: int(srv.Port)}
+	}
+	return addrs, nil
+}
+
+// ResolveAddrs resolves TCP address given a list of addresses. Address can be a hostname, however, it will return at most one
+// of the hostname's IP addresses
+func ResolveAddrs(addrs []string) ([]*net.TCPAddr, error) {
+	var tcpAddrs []*net.TCPAddr
+	for _, addr := range addrs {
+		tcpAddr, err := net.ResolveTCPAddr("tcp", addr)
+		if err != nil {
+			return nil, err
+		}
+		tcpAddrs = append(tcpAddrs, tcpAddr)
+	}
+	return tcpAddrs, nil
+}

edgediscovery/allregions/discovery_test.go

@@ -0,0 +1,32 @@
+package allregions
+
+import (
+	"testing"
+
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEdgeDiscovery(t *testing.T) {
+	mockAddrs := newMockAddrs(19, 2, 5)
+	netLookupSRV = mockNetLookupSRV(mockAddrs)
+	netLookupIP = mockNetLookupIP(mockAddrs)
+
+	expectedAddrSet := map[string]bool{}
+	for _, addrs := range mockAddrs.addrMap {
+		for _, addr := range addrs {
+			expectedAddrSet[addr.String()] = true
+		}
+	}
+
+	addrLists, err := edgeDiscovery(logrus.New().WithFields(logrus.Fields{}))
+	assert.NoError(t, err)
+	actualAddrSet := map[string]bool{}
+	for _, addrs := range addrLists {
+		for _, addr := range addrs {
+			actualAddrSet[addr.String()] = true
+		}
+	}
+
+	assert.Equal(t, expectedAddrSet, actualAddrSet)
+}

edgediscovery/allregions/mocks_for_test.go

@@ -0,0 +1,89 @@
+package allregions
+
+import (
+	"fmt"
+	"math"
+	"math/rand"
+	"net"
+	"reflect"
+	"testing/quick"
+)
+
+type mockAddrs struct {
+	// a set of synthetic SRV records
+	addrMap map[net.SRV][]*net.TCPAddr
+	// the total number of addresses, aggregated across addrMap.
+	// For the convenience of test code that would otherwise have to compute
+	// this by hand every time.
+	numAddrs int
+}
+
+func newMockAddrs(port uint16, numRegions uint8, numAddrsPerRegion uint8) mockAddrs {
+	addrMap := make(map[net.SRV][]*net.TCPAddr)
+	numAddrs := 0
+
+	for r := uint8(0); r < numRegions; r++ {
+		var (
+			srv   = net.SRV{Target: fmt.Sprintf("test-region-%v.example.com", r), Port: port}
+			addrs []*net.TCPAddr
+		)
+		for a := uint8(0); a < numAddrsPerRegion; a++ {
+			addrs = append(addrs, &net.TCPAddr{
+				IP:   net.ParseIP(fmt.Sprintf("10.0.%v.%v", r, a)),
+				Port: int(port),
+			})
+		}
+		addrMap[srv] = addrs
+		numAddrs += len(addrs)
+	}
+	return mockAddrs{addrMap: addrMap, numAddrs: numAddrs}
+}
+
+var _ quick.Generator = mockAddrs{}
+
+func (mockAddrs) Generate(rand *rand.Rand, size int) reflect.Value {
+	port := uint16(rand.Intn(math.MaxUint16))
+	numRegions := uint8(1 + rand.Intn(10))
+	numAddrsPerRegion := uint8(1 + rand.Intn(32))
+	result := newMockAddrs(port, numRegions, numAddrsPerRegion)
+	return reflect.ValueOf(result)
+}
+
+// Returns a function compatible with net.LookupSRV that will return the SRV
+// records from mockAddrs.
+func mockNetLookupSRV(
+	m mockAddrs,
+) func(service, proto, name string) (cname string, addrs []*net.SRV, err error) {
+	var addrs []*net.SRV
+	for k := range m.addrMap {
+		addr := k
+		addrs = append(addrs, &addr)
+		// We can't just do
+		//   addrs = append(addrs, &k)
+		// `k` will be reused by subsequent loop iterations,
+		// so all the copies of `&k` would point to the same location.
+	}
+	return func(_, _, _ string) (string, []*net.SRV, error) {
+		return "", addrs, nil
+	}
+}
+
+// Returns a function compatible with net.LookupIP that translates the SRV records
+// from mockAddrs into IP addresses, based on the TCP addresses in mockAddrs.
+func mockNetLookupIP(
+	m mockAddrs,
+) func(host string) ([]net.IP, error) {
+	return func(host string) ([]net.IP, error) {
+		for srv, tcpAddrs := range m.addrMap {
+			if srv.Target != host {
+				continue
+			}
+			result := make([]net.IP, len(tcpAddrs))
+			for i, tcpAddr := range tcpAddrs {
+				result[i] = tcpAddr.IP
+			}
+			return result, nil
+		}
+		return nil, fmt.Errorf("No IPs for %v", host)
+	}
+}

edgediscovery/allregions/region.go

@@ -0,0 +1,84 @@
+package allregions
+
+import (
+	"net"
+
+	"github.com/sirupsen/logrus"
+)
+
+// Region contains cloudflared edge addresses. The edge is partitioned into several regions for
+// redundancy purposes.
+type Region struct {
+	connFor map[*net.TCPAddr]UsedBy
+}
+
+// NewRegion creates a region with the given addresses, which are all unused.
+func NewRegion(addrs []*net.TCPAddr) Region {
+	// The zero value of UsedBy is Unused(), so we can just initialize the map's values with their
+	// zero values.
+	m := make(map[*net.TCPAddr]UsedBy)
+	for _, addr := range addrs {
+		m[addr] = Unused()
+	}
+	return Region{connFor: m}
+}
+
+// AddrUsedBy finds the address used by the given connection in this region.
+// Returns nil if the connection isn't using any IP.
+func (r *Region) AddrUsedBy(connID int) *net.TCPAddr {
+	for addr, used := range r.connFor {
+		if used.Used && used.ConnID == connID {
+			return addr
+		}
+	}
+	return nil
+}
+
+// AvailableAddrs counts how many unused addresses this region contains.
+func (r Region) AvailableAddrs() int {
+	n := 0
+	for _, usedby := range r.connFor {
+		if !usedby.Used {
+			n++
+		}
+	}
+	return n
+}
+
+// GetUnusedIP returns a random unused address in this region.
+// Returns nil if all addresses are in use.
+func (r Region) GetUnusedIP(excluding *net.TCPAddr) *net.TCPAddr {
+	for addr, usedby := range r.connFor {
+		if !usedby.Used && addr != excluding {
+			return addr
+		}
+	}
+	return nil
+}
+
+// Use the address, assigning it to a proxy connection.
+func (r Region) Use(addr *net.TCPAddr, connID int) {
+	if addr == nil {
+		logrus.Errorf("Attempted to use nil address for connection %d", connID)
+		return
+	}
+	r.connFor[addr] = InUse(connID)
+}
+
+// GetAnyAddress returns an arbitrary address from the region.
+func (r Region) GetAnyAddress() *net.TCPAddr {
+	for addr := range r.connFor {
+		return addr
+	}
+	return nil
+}
+
+// GiveBack the address, ensuring it is no longer assigned to an IP.
+// Returns true if the address is in this region.
+func (r Region) GiveBack(addr *net.TCPAddr) (ok bool) {
+	if _, ok := r.connFor[addr]; !ok {
+		return false
+	}
+	r.connFor[addr] = Unused()
+	return true
+}

edgediscovery/allregions/region_test.go

@@ -0,0 +1,287 @@
+package allregions
+
+import (
+	"fmt"
+	"net"
+	"reflect"
+	"testing"
+)
+
+func TestRegion_New(t *testing.T) {
+	r := NewRegion([]*net.TCPAddr{&addr0, &addr1, &addr2})
+	fmt.Println(r.connFor)
+	if r.AvailableAddrs() != 3 {
+		t.Errorf("r.AvailableAddrs() == %v but want 3", r.AvailableAddrs())
+	}
+}
+
+func TestRegion_AddrUsedBy(t *testing.T) {
+	type fields struct {
+		connFor map[*net.TCPAddr]UsedBy
+	}
+	type args struct {
+		connID int
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   *net.TCPAddr
+	}{
+		{
+			name: "happy trivial test",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+			}},
+			args: args{connID: 0},
+			want: &addr0,
+		},
+		{
+			name: "sad trivial test",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+			}},
+			args: args{connID: 1},
+			want: nil,
+		},
+		{
+			name: "sad test",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+				&addr1: InUse(1),
+				&addr2: InUse(2),
+			}},
+			args: args{connID: 3},
+			want: nil,
+		},
+		{
+			name: "happy test",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+				&addr1: InUse(1),
+				&addr2: InUse(2),
+			}},
+			args: args{connID: 1},
+			want: &addr1,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := &Region{
+				connFor: tt.fields.connFor,
+			}
+			if got := r.AddrUsedBy(tt.args.connID); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Region.AddrUsedBy() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestRegion_AvailableAddrs(t *testing.T) {
+	type fields struct {
+		connFor map[*net.TCPAddr]UsedBy
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		want   int
+	}{
+		{
+			name: "contains addresses",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+				&addr1: Unused(),
+				&addr2: InUse(2),
+			}},
+			want: 1,
+		},
+		{
+			name: "all free",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: Unused(),
+				&addr1: Unused(),
+				&addr2: Unused(),
+			}},
+			want: 3,
+		},
+		{
+			name: "all used",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+				&addr1: InUse(1),
+				&addr2: InUse(2),
+			}},
+			want: 0,
+		},
+		{
+			name:   "empty",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{}},
+			want:   0,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := Region{
+				connFor: tt.fields.connFor,
+			}
+			if got := r.AvailableAddrs(); got != tt.want {
+				t.Errorf("Region.AvailableAddrs() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestRegion_GetUnusedIP(t *testing.T) {
+	type fields struct {
+		connFor map[*net.TCPAddr]UsedBy
+	}
+	type args struct {
+		excluding *net.TCPAddr
+	}
+	tests := []struct {
+		name   string
+		fields fields
+		args   args
+		want   *net.TCPAddr
+	}{
+		{
+			name: "happy test with excluding set",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: Unused(),
+				&addr1: Unused(),
+				&addr2: InUse(2),
+			}},
+			args: args{excluding: &addr0},
+			want: &addr1,
+		},
+		{
+			name: "happy test with no excluding",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+				&addr1: Unused(),
+				&addr2: InUse(2),
+			}},
+			args: args{excluding: nil},
+			want: &addr1,
+		},
+		{
+			name: "sad test with no excluding",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(0),
+				&addr1: InUse(1),
+				&addr2: InUse(2),
+			}},
+			args: args{excluding: nil},
+			want: nil,
+		},
+		{
+			name: "sad test with excluding",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: Unused(),
+				&addr1: InUse(1),
+				&addr2: InUse(2),
+			}},
+			args: args{excluding: &addr0},
+			want: nil,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := Region{
+				connFor: tt.fields.connFor,
+			}
+			if got := r.GetUnusedIP(tt.args.excluding); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Region.GetUnusedIP() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestRegion_GiveBack(t *testing.T) {
+	type fields struct {
+		connFor map[*net.TCPAddr]UsedBy
+	}
+	type args struct {
+		addr *net.TCPAddr
+	}
+	tests := []struct {
+		name           string
+		fields         fields
+		args           args
+		wantOk         bool
+		availableAfter int
+	}{
+		{
+			name: "sad test with excluding",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr1: InUse(1),
+			}},
+			args:           args{addr: &addr1},
+			wantOk:         true,
+			availableAfter: 1,
+		},
+		{
+			name: "sad test with excluding",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr1: InUse(1),
+			}},
+			args:           args{addr: &addr2},
+			wantOk:         false,
+			availableAfter: 0,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := Region{
+				connFor: tt.fields.connFor,
+			}
+			if gotOk := r.GiveBack(tt.args.addr); gotOk != tt.wantOk {
+				t.Errorf("Region.GiveBack() = %v, want %v", gotOk, tt.wantOk)
+			}
+			if tt.availableAfter != r.AvailableAddrs() {
+				t.Errorf("Region.AvailableAddrs() = %v, want %v", r.AvailableAddrs(), tt.availableAfter)
+			}
+		})
+	}
+}
+
+func TestRegion_GetAnyAddress(t *testing.T) {
+	type fields struct {
+		connFor map[*net.TCPAddr]UsedBy
+	}
+	tests := []struct {
+		name    string
+		fields  fields
+		wantNil bool
+	}{
+		{
+			name:    "Sad test -- GetAnyAddress should only fail if the region is empty",
+			fields:  fields{connFor: map[*net.TCPAddr]UsedBy{}},
+			wantNil: true,
+		},
+		{
+			name: "Happy test (all addresses unused)",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: Unused(),
+			}},
+			wantNil: false,
+		},
+		{
+			name: "Happy test (GetAnyAddress can still return addresses used by proxy conns)",
+			fields: fields{connFor: map[*net.TCPAddr]UsedBy{
+				&addr0: InUse(2),
+			}},
+			wantNil: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := Region{
+				connFor: tt.fields.connFor,
+			}
+			if got := r.GetAnyAddress(); tt.wantNil != (got == nil) {
+				t.Errorf("Region.GetAnyAddress() = %v, but should it return nil? %v", got, tt.wantNil)
+			}
+		})
+	}
+}

edgediscovery/allregions/regions.go

@@ -0,0 +1,125 @@
+package allregions
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/sirupsen/logrus"
+)
+
+// Regions stores Cloudflare edge network IPs, partitioned into two regions.
+// This is NOT thread-safe. Users of this package should use it with a lock.
+type Regions struct {
+	region1 Region
+	region2 Region
+}
+
+// ------------------------------------
+// Constructors
+// ------------------------------------
+
+// ResolveEdge resolves the Cloudflare edge, returning all regions discovered.
+func ResolveEdge(logger *logrus.Entry) (*Regions, error) {
+	addrLists, err := edgeDiscovery(logger)
+	if err != nil {
+		return nil, err
+	}
+	if len(addrLists) < 2 {
+		return nil, fmt.Errorf("expected at least 2 Cloudflare Regions regions, but SRV only returned %v", len(addrLists))
+	}
+	return &Regions{
+		region1: NewRegion(addrLists[0]),
+		region2: NewRegion(addrLists[1]),
+	}, nil
+}
+
+// StaticEdge creates a list of edge addresses from the list of hostnames.
+// Mainly used for testing connectivity.
+func StaticEdge(hostnames []string) (*Regions, error) {
+	addrs, err := ResolveAddrs(hostnames)
+	if err != nil {
+		return nil, err
+	}
+	return NewNoResolve(addrs), nil
+}
+
+// NewNoResolve doesn't resolve the edge. Instead it just uses the given addresses.
+// You probably only need this for testing.
+func NewNoResolve(addrs []*net.TCPAddr) *Regions {
+	region1 := make([]*net.TCPAddr, 0)
+	region2 := make([]*net.TCPAddr, 0)
+	for i, v := range addrs {
+		if i%2 == 0 {
+			region1 = append(region1, v)
+		} else {
+			region2 = append(region2, v)
+		}
+	}
+
+	return &Regions{
+		region1: NewRegion(region1),
+		region2: NewRegion(region2),
+	}
+}
+
+// ------------------------------------
+// Methods
+// ------------------------------------
+
+// GetAnyAddress returns an arbitrary address from the larger region.
+func (rs *Regions) GetAnyAddress() *net.TCPAddr {
+	if addr := rs.region1.GetAnyAddress(); addr != nil {
+		return addr
+	}
+	return rs.region2.GetAnyAddress()
+}
+
+// AddrUsedBy finds the address used by the given connection.
+// Returns nil if the connection isn't using an address.
+func (rs *Regions) AddrUsedBy(connID int) *net.TCPAddr {
+	if addr := rs.region1.AddrUsedBy(connID); addr != nil {
+		return addr
+	}
+	return rs.region2.AddrUsedBy(connID)
+}
+
+// GetUnusedAddr gets an unused addr from the edge, excluding the given addr. Prefer to use addresses
+// evenly across both regions.
+func (rs *Regions) GetUnusedAddr(excluding *net.TCPAddr, connID int) *net.TCPAddr {
+	if rs.region1.AvailableAddrs() > rs.region2.AvailableAddrs() {
+		return getAddrs(excluding, connID, &rs.region1, &rs.region2)
+	}
+
+	return getAddrs(excluding, connID, &rs.region2, &rs.region1)
+}
+
+// getAddrs tries to grab address form `first` region, then `second` region
+// this is an unrolled loop over 2 element array
+func getAddrs(excluding *net.TCPAddr, connID int, first *Region, second *Region) *net.TCPAddr {
+	addr := first.GetUnusedIP(excluding)
+	if addr != nil {
+		first.Use(addr, connID)
+		return addr
+	}
+	addr = second.GetUnusedIP(excluding)
+	if addr != nil {
+		second.Use(addr, connID)
+		return addr
+	}
+
+	return nil
+}
+
+// AvailableAddrs returns how many edge addresses aren't used.
+func (rs *Regions) AvailableAddrs() int {
+	return rs.region1.AvailableAddrs() + rs.region2.AvailableAddrs()
+}
+
+// GiveBack the address so that other connections can use it.
+// Returns true if the address is in this edge.
+func (rs *Regions) GiveBack(addr *net.TCPAddr) bool {
+	if found := rs.region1.GiveBack(addr); found {
+		return found
+	}
+	return rs.region2.GiveBack(addr)
+}

edgediscovery/allregions/regions_test.go

@@ -0,0 +1,141 @@
+package allregions
+
+import (
+	"net"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var (
+	addr0 = net.TCPAddr{
+		IP:   net.ParseIP("123.4.5.0"),
+		Port: 8000,
+		Zone: "",
+	}
+	addr1 = net.TCPAddr{
+		IP:   net.ParseIP("123.4.5.1"),
+		Port: 8000,
+		Zone: "",
+	}
+	addr2 = net.TCPAddr{
+		IP:   net.ParseIP("123.4.5.2"),
+		Port: 8000,
+		Zone: "",
+	}
+	addr3 = net.TCPAddr{
+		IP:   net.ParseIP("123.4.5.3"),
+		Port: 8000,
+		Zone: "",
+	}
+)
+
+func makeRegions() Regions {
+	r1 := NewRegion([]*net.TCPAddr{&addr0, &addr1})
+	r2 := NewRegion([]*net.TCPAddr{&addr2, &addr3})
+	return Regions{region1: r1, region2: r2}
+}
+
+func TestRegions_AddrUsedBy(t *testing.T) {
+	rs := makeRegions()
+	addr1 := rs.GetUnusedAddr(nil, 1)
+	assert.Equal(t, addr1, rs.AddrUsedBy(1))
+	addr2 := rs.GetUnusedAddr(nil, 2)
+	assert.Equal(t, addr2, rs.AddrUsedBy(2))
+	addr3 := rs.GetUnusedAddr(nil, 3)
+	assert.Equal(t, addr3, rs.AddrUsedBy(3))
+}
+
+func TestRegions_Giveback_Region1(t *testing.T) {
+	rs := makeRegions()
+	rs.region1.Use(&addr0, 0)
+	rs.region1.Use(&addr1, 1)
+	rs.region2.Use(&addr2, 2)
+	rs.region2.Use(&addr3, 3)
+
+	assert.Equal(t, 0, rs.AvailableAddrs())
+
+	rs.GiveBack(&addr0)
+	assert.Equal(t, &addr0, rs.GetUnusedAddr(nil, 3))
+}
+
+func TestRegions_Giveback_Region2(t *testing.T) {
+	rs := makeRegions()
+	rs.region1.Use(&addr0, 0)
+	rs.region1.Use(&addr1, 1)
+	rs.region2.Use(&addr2, 2)
+	rs.region2.Use(&addr3, 3)
+
+	assert.Equal(t, 0, rs.AvailableAddrs())
+
+	rs.GiveBack(&addr2)
+	assert.Equal(t, &addr2, rs.GetUnusedAddr(nil, 2))
+}
+
+func TestRegions_GetUnusedAddr_OneAddrLeft(t *testing.T) {
+	rs := makeRegions()
+
+	rs.region1.Use(&addr0, 0)
+	rs.region1.Use(&addr1, 1)
+	rs.region2.Use(&addr2, 2)
+
+	assert.Equal(t, 1, rs.AvailableAddrs())
+	assert.Equal(t, &addr3, rs.GetUnusedAddr(nil, 3))
+}
+
+func TestRegions_GetUnusedAddr_Excluding_Region1(t *testing.T) {
+	rs := makeRegions()
+
+	rs.region1.Use(&addr0, 0)
+	rs.region1.Use(&addr1, 1)
+
+	assert.Equal(t, 2, rs.AvailableAddrs())
+	assert.Equal(t, &addr3, rs.GetUnusedAddr(&addr2, 3))
+}
+
+func TestRegions_GetUnusedAddr_Excluding_Region2(t *testing.T) {
+	rs := makeRegions()
+
+	rs.region2.Use(&addr2, 0)
+	rs.region2.Use(&addr3, 1)
+
+	assert.Equal(t, 2, rs.AvailableAddrs())
+	assert.Equal(t, &addr1, rs.GetUnusedAddr(&addr0, 1))
+}
+
+func TestNewNoResolveBalancesRegions(t *testing.T) {
+	type args struct {
+		addrs []*net.TCPAddr
+	}
+	tests := []struct {
+		name string
+		args args
+	}{
+		{
+			name: "one address",
+			args: args{addrs: []*net.TCPAddr{&addr0}},
+		},
+		{
+			name: "two addresses",
+			args: args{addrs: []*net.TCPAddr{&addr0, &addr1}},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			regions := NewNoResolve(tt.args.addrs)
+			RegionsIsBalanced(t, regions)
+		})
+	}
+}
+
+func RegionsIsBalanced(t *testing.T, rs *Regions) {
+	delta := rs.region1.AvailableAddrs() - rs.region2.AvailableAddrs()
+	assert.True(t, abs(delta) <= 1)
+}
+
+func abs(x int) int {
+	if x >= 0 {
+		return x
+	}
+	return -x
+}

edgediscovery/allregions/usedby.go

@@ -0,0 +1,14 @@
+package allregions
+
+type UsedBy struct {
+	ConnID int
+	Used   bool
+}
+
+func InUse(connID int) UsedBy {
+	return UsedBy{ConnID: connID, Used: true}
+}
+
+func Unused() UsedBy {
+	return UsedBy{}
+}

edgediscovery/edgediscovery.go

@@ -0,0 +1,144 @@
+package edgediscovery
+
+import (
+	"fmt"
+	"net"
+	"sync"
+
+	"github.com/cloudflare/cloudflared/edgediscovery/allregions"
+
+	"github.com/sirupsen/logrus"
+)
+
+const (
+	subsystem = "edgediscovery"
+)
+
+var errNoAddressesLeft = fmt.Errorf("There are no free edge addresses left")
+
+// Edge finds addresses on the Cloudflare edge and hands them out to connections.
+type Edge struct {
+	regions *allregions.Regions
+	sync.Mutex
+	logger *logrus.Entry
+}
+
+// ------------------------------------
+// Constructors
+// ------------------------------------
+
+// ResolveEdge runs the initial discovery of the Cloudflare edge, finding Addrs that can be allocated
+// to connections.
+func ResolveEdge(l *logrus.Logger) (*Edge, error) {
+	logger := l.WithField("subsystem", subsystem)
+	regions, err := allregions.ResolveEdge(logger)
+	if err != nil {
+		return new(Edge), err
+	}
+	return &Edge{
+		logger:  logger,
+		regions: regions,
+	}, nil
+}
+
+// StaticEdge creates a list of edge addresses from the list of hostnames. Mainly used for testing connectivity.
+func StaticEdge(l *logrus.Logger, hostnames []string) (*Edge, error) {
+	logger := l.WithField("subsystem", subsystem)
+	regions, err := allregions.StaticEdge(hostnames)
+	if err != nil {
+		return new(Edge), err
+	}
+	return &Edge{
+		logger:  logger,
+		regions: regions,
+	}, nil
+}
+
+// MockEdge creates a Cloudflare Edge from arbitrary TCP addresses. Used for testing.
+func MockEdge(l *logrus.Logger, addrs []*net.TCPAddr) *Edge {
+	logger := l.WithField("subsystem", subsystem)
+	regions := allregions.NewNoResolve(addrs)
+	return &Edge{
+		logger:  logger,
+		regions: regions,
+	}
+}
+
+// ------------------------------------
+// Methods
+// ------------------------------------
+
+// GetAddrForRPC gives this connection an edge Addr.
+func (ed *Edge) GetAddrForRPC() (*net.TCPAddr, error) {
+	ed.Lock()
+	defer ed.Unlock()
+	addr := ed.regions.GetAnyAddress()
+	if addr == nil {
+		return nil, errNoAddressesLeft
+	}
+	return addr, nil
+}
+
+// GetAddr gives this proxy connection an edge Addr. Prefer Addrs this connection has already used.
+func (ed *Edge) GetAddr(connID int) (*net.TCPAddr, error) {
+	ed.Lock()
+	defer ed.Unlock()
+	logger := ed.logger.WithFields(logrus.Fields{
+		"connID":   connID,
+		"function": "GetAddr",
+	})
+
+	// If this connection has already used an edge addr, return it.
+	if addr := ed.regions.AddrUsedBy(connID); addr != nil {
+		logger.Debug("Returning same address back to proxy connection")
+		return addr, nil
+	}
+
+	// Otherwise, give it an unused one
+	addr := ed.regions.GetUnusedAddr(nil, connID)
+	if addr == nil {
+		logger.Debug("No addresses left to give proxy connection")
+		return nil, errNoAddressesLeft
+	}
+	logger.Debugf("Giving connection its new address %s", addr)
+	return addr, nil
+}
+
+// GetDifferentAddr gives back the proxy connection's edge Addr and uses a new one.
+func (ed *Edge) GetDifferentAddr(connID int) (*net.TCPAddr, error) {
+	ed.Lock()
+	defer ed.Unlock()
+	logger := ed.logger.WithFields(logrus.Fields{
+		"connID":   connID,
+		"function": "GetDifferentAddr",
+	})
+
+	oldAddr := ed.regions.AddrUsedBy(connID)
+	if oldAddr != nil {
+		ed.regions.GiveBack(oldAddr)
+	}
+	addr := ed.regions.GetUnusedAddr(oldAddr, connID)
+	if addr == nil {
+		logger.Debug("No addresses left to give proxy connection")
+		// note: if oldAddr were not nil, it will become available on the next iteration
+		return nil, errNoAddressesLeft
+	}
+	logger.Debugf("Giving connection its new address %s", addr)
+	return addr, nil
+}
+
+// AvailableAddrs returns how many unused addresses there are left.
+func (ed *Edge) AvailableAddrs() int {
+	ed.Lock()
+	defer ed.Unlock()
+	return ed.regions.AvailableAddrs()
+}
+
+// GiveBack the address so that other connections can use it.
+// Returns true if the address is in this edge.
+func (ed *Edge) GiveBack(addr *net.TCPAddr) bool {
+	ed.Lock()
+	defer ed.Unlock()
+	ed.logger.WithField("function", "GiveBack").Debug("Address now unused")
+	return ed.regions.GiveBack(addr)
+}

edgediscovery/edgediscovery_test.go

@@ -0,0 +1,177 @@
+package edgediscovery
+
+import (
+	"net"
+	"testing"
+
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+var (
+	addr0 = net.TCPAddr{
+		IP:   net.ParseIP("123.0.0.0"),
+		Port: 8000,
+		Zone: "",
+	}
+	addr1 = net.TCPAddr{
+		IP:   net.ParseIP("123.0.0.1"),
+		Port: 8000,
+		Zone: "",
+	}
+	addr2 = net.TCPAddr{
+		IP:   net.ParseIP("123.0.0.2"),
+		Port: 8000,
+		Zone: "",
+	}
+	addr3 = net.TCPAddr{
+		IP:   net.ParseIP("123.0.0.3"),
+		Port: 8000,
+		Zone: "",
+	}
+)
+
+func TestGiveBack(t *testing.T) {
+	l := logrus.New()
+	edge := MockEdge(l, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3})
+
+	// Give this connection an address
+	assert.Equal(t, 4, edge.AvailableAddrs())
+	const connID = 0
+	addr, err := edge.GetAddr(connID)
+	assert.NoError(t, err)
+	assert.NotNil(t, addr)
+	assert.Equal(t, 3, edge.AvailableAddrs())
+
+	// Get it back
+	edge.GiveBack(addr)
+	assert.Equal(t, 4, edge.AvailableAddrs())
+}
+
+func TestRPCAndProxyShareSingleEdgeIP(t *testing.T) {
+	l := logrus.New()
+
+	// Make an edge with a single IP
+	edge := MockEdge(l, []*net.TCPAddr{&addr0})
+	tunnelConnID := 0
+
+	// Use the IP for a tunnel
+	addrTunnel, err := edge.GetAddr(tunnelConnID)
+	assert.NoError(t, err)
+
+	// Ensure the IP can be used for RPC too
+	addrRPC, err := edge.GetAddrForRPC()
+	assert.NoError(t, err)
+	assert.Equal(t, addrTunnel, addrRPC)
+}
+
+func TestGetAddrForRPC(t *testing.T) {
+	l := logrus.New()
+	edge := MockEdge(l, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3})
+
+	// Get a connection
+	assert.Equal(t, 4, edge.AvailableAddrs())
+	addr, err := edge.GetAddrForRPC()
+	assert.NoError(t, err)
+	assert.NotNil(t, addr)
+
+	// Using an address for RPC shouldn't consume it
+	assert.Equal(t, 4, edge.AvailableAddrs())
+
+	// Get it back
+	edge.GiveBack(addr)
+	assert.Equal(t, 4, edge.AvailableAddrs())
+}
+
+func TestOnePerRegion(t *testing.T) {
+	l := logrus.New()
+
+	// Make an edge with only one address
+	edge := MockEdge(l, []*net.TCPAddr{&addr0, &addr1})
+
+	// Use the only address
+	const connID = 0
+	a1, err := edge.GetAddr(connID)
+	assert.NoError(t, err)
+	assert.NotNil(t, a1)
+
+	// if the first address is bad, get the second one
+	a2, err := edge.GetDifferentAddr(connID)
+	assert.NoError(t, err)
+	assert.NotNil(t, a2)
+	assert.NotEqual(t, a1, a2)
+
+	// now that second one is bad, get the first one again
+	a3, err := edge.GetDifferentAddr(connID)
+	assert.NoError(t, err)
+	assert.Equal(t, a1, a3)
+}
+
+func TestOnlyOneAddrLeft(t *testing.T) {
+	l := logrus.New()
+
+	// Make an edge with only one address
+	edge := MockEdge(l, []*net.TCPAddr{&addr0})
+
+	// Use the only address
+	const connID = 0
+	addr, err := edge.GetAddr(connID)
+	assert.NoError(t, err)
+	assert.NotNil(t, addr)
+
+	// If that edge address is "bad", there's no alternative address.
+	_, err = edge.GetDifferentAddr(connID)
+	assert.Error(t, err)
+
+	// previously bad address should become available again on next iteration.
+	addr, err = edge.GetDifferentAddr(connID)
+	assert.NoError(t, err)
+	assert.NotNil(t, addr)
+}
+
+func TestNoAddrsLeft(t *testing.T) {
+	l := logrus.New()
+
+	// Make an edge with no addresses
+	edge := MockEdge(l, []*net.TCPAddr{})
+
+	_, err := edge.GetAddr(2)
+	assert.Error(t, err)
+	_, err = edge.GetAddrForRPC()
+	assert.Error(t, err)
+}
+
+func TestGetAddr(t *testing.T) {
+	l := logrus.New()
+	edge := MockEdge(l, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3})
+
+	// Give this connection an address
+	const connID = 0
+	addr, err := edge.GetAddr(connID)
+	assert.NoError(t, err)
+	assert.NotNil(t, addr)
+
+	// If the same connection requests another address, it should get the same one.
+	addr2, err := edge.GetAddr(connID)
+	assert.NoError(t, err)
+	assert.Equal(t, addr, addr2)
+}
+
+func TestGetDifferentAddr(t *testing.T) {
+	l := logrus.New()
+	edge := MockEdge(l, []*net.TCPAddr{&addr0, &addr1, &addr2, &addr3})
+
+	// Give this connection an address
+	assert.Equal(t, 4, edge.AvailableAddrs())
+	const connID = 0
+	addr, err := edge.GetAddr(connID)
+	assert.NoError(t, err)
+	assert.NotNil(t, addr)
+	assert.Equal(t, 3, edge.AvailableAddrs())
+
+	// If the same connection requests another address, it should get the same one.
+	addr2, err := edge.GetDifferentAddr(connID)
+	assert.NoError(t, err)
+	assert.NotEqual(t, addr, addr2)
+	assert.Equal(t, 3, edge.AvailableAddrs())
+}

go.mod

@@ -3,12 +3,14 @@ module github.com/cloudflare/cloudflared
 go 1.12
 
 require (
+	github.com/BurntSushi/go-sumtype v0.0.0-20190304192233-fcb4a6205bdc // indirect
 	github.com/DATA-DOG/go-sqlmock v1.3.3
 	github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 // indirect
 	github.com/aws/aws-sdk-go v1.25.8
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/certifi/gocertifi v0.0.0-20180118203423-deb3ae2ef261 // indirect
+	github.com/certifi/gocertifi v0.0.0-20200211180108-c7c1fbc02894 // indirect
 	github.com/cloudflare/brotli-go v0.0.0-20191101163834-d34379f7ff93
+	github.com/cloudflare/cfssl v0.0.0-20141119014638-2f7f44e802e2
 	github.com/cloudflare/golibs v0.0.0-20170913112048-333127dbecfc
 	github.com/coredns/coredns v1.2.0
 	github.com/coreos/go-oidc v0.0.0-20171002155002-a93f71fdfe73
@@ -21,11 +23,11 @@ require (
 	github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 // indirect
 	github.com/facebookgo/subset v0.0.0-20150612182917-8dac2c3c4870 // indirect
 	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
+	github.com/fsnotify/fsnotify v1.4.9
 	github.com/getsentry/raven-go v0.0.0-20180517221441-ed7bcb39ff10
 	github.com/gliderlabs/ssh v0.0.0-20191009160644-63518b5243e0
 	github.com/go-sql-driver/mysql v1.4.1
 	github.com/golang-collections/collections v0.0.0-20130729185459-604e922904d3
-	github.com/google/certificate-transparency-go v1.1.0
 	github.com/google/uuid v1.1.1
 	github.com/gorilla/mux v1.7.3
 	github.com/gorilla/websocket v1.4.0
@@ -33,12 +35,13 @@ require (
 	github.com/jmoiron/sqlx v1.2.0
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
 	github.com/kshvakov/clickhouse v1.3.11
+	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/lib/pq v1.2.0
 	github.com/mattn/go-colorable v0.1.4
 	github.com/mattn/go-isatty v0.0.10 // indirect
 	github.com/mattn/go-sqlite3 v1.11.0
 	github.com/mholt/caddy v0.0.0-20180807230124-d3b731e9255b // indirect
-	github.com/miekg/dns v1.1.8
+	github.com/miekg/dns v1.1.27
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/opentracing/opentracing-go v1.1.0 // indirect
 	github.com/philhofer/fwd v1.0.0 // indirect
@@ -53,16 +56,18 @@ require (
 	github.com/stretchr/testify v1.3.0
 	github.com/tinylib/msgp v1.1.0 // indirect
 	github.com/xo/dburl v0.0.0-20191005012637-293c3298d6c0
-	golang.org/x/crypto v0.0.0-20191002192127-34f69633bfdc
-	golang.org/x/net v0.0.0-20191007182048-72f939374954
+	golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550
+	golang.org/x/net v0.0.0-20191014212845-da9a3fd4c582
+	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 // indirect
 	golang.org/x/sync v0.0.0-20190423024810-112230192c58
-	golang.org/x/sys v0.0.0-20191008105621-543471e840be
+	golang.org/x/sys v0.0.0-20191020212454-3e7259c5e7c2
+	google.golang.org/appengine v1.5.0 // indirect
 	google.golang.org/genproto v0.0.0-20191007204434-a023cd5227bd // indirect
 	google.golang.org/grpc v1.24.0 // indirect
 	gopkg.in/coreos/go-oidc.v2 v2.1.0
 	gopkg.in/square/go-jose.v2 v2.4.0 // indirect
 	gopkg.in/urfave/cli.v2 v2.0.0-20180128181224-d604b6ffeee8
-	gopkg.in/yaml.v2 v2.2.4 // indirect
+	gopkg.in/yaml.v2 v2.2.4
 	zombiezen.com/go/capnproto2 v0.0.0-20180616160808-7cfd211c19c7
 )
 

go.sum

@@ -1,59 +1,53 @@
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@@ -66,180 +60,103 @@ github.com/facebookgo/stack v0.0.0-20160209184415-751773369052 h1:JWuenKqqX8nojt
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-honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-mvdan.cc/interfacer v0.0.0-20180901003855-c20040233aed/go.mod h1:Xkxe497xwlCKkIaQYRfC7CSLworTXY9RMqwhhCm+8Nc=
-mvdan.cc/lint v0.0.0-20170908181259-adc824a0674b/go.mod h1:2odslEg/xrtNQqCYg2/jCoyKnw3vv5biOc3JnIcYfL4=
-mvdan.cc/unparam v0.0.0-20190209190245-fbb59629db34/go.mod h1:H6SUd1XjIs+qQCyskXg5OFSrilMRUkD8ePJpHKDPaeY=
-sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4/go.mod h1:ketZ/q3QxT9HOBeFhu6RdvsftgpsbFHBF5Cas6cDKZ0=
 zombiezen.com/go/capnproto2 v0.0.0-20180616160808-7cfd211c19c7 h1:CZoOFlTPbKfAShKYrMuUfYbnXexFT1rYRUX1SPnrdE4=
 zombiezen.com/go/capnproto2 v0.0.0-20180616160808-7cfd211c19c7/go.mod h1:TMGa8HWGJkXiq4nHe9Zu/JgRF5oUtg4XizFC+Vexbec=

h2mux/h2mux.go

@@ -90,10 +90,6 @@ type Muxer struct {
 	compressionQuality CompressionPreset
 }
 
-type Header struct {
-	Name, Value string
-}
-
 func RPCHeaders() []Header {
 	return []Header{
 		{Name: ":method", Value: "RPC"},
@@ -210,9 +206,9 @@ func Handshake(
 		initialStreamWindow:     m.config.DefaultWindowSize,
 		streamWindowMax:         m.config.MaxWindowSize,
 		streamWriteBufferMaxLen: m.config.StreamWriteBufferMaxLen,
-		r:                       m.r,
-		metricsUpdater:          m.muxMetricsUpdater,
-		bytesRead:               inBoundCounter,
+		r:              m.r,
+		metricsUpdater: m.muxMetricsUpdater,
+		bytesRead:      inBoundCounter,
 	}
 	m.muxWriter = &MuxWriter{
 		f:               m.f,
@@ -325,24 +321,63 @@ func joinErrorsWithTimeout(errChan <-chan error, receiveCount int, timeout time.
 func (m *Muxer) Serve(ctx context.Context) error {
 	errGroup, _ := errgroup.WithContext(ctx)
 	errGroup.Go(func() error {
-		err := m.muxReader.run(m.config.Logger)
-		m.explicitShutdown.Fuse(false)
-		m.r.Close()
-		m.abort()
-		return err
+		ch := make(chan error)
+		go func() {
+			err := m.muxReader.run(m.config.Logger)
+			m.explicitShutdown.Fuse(false)
+			m.r.Close()
+			m.abort()
+			// don't block if parent goroutine quit early
+			select {
+			case ch <- err:
+			default:
+			}
+		}()
+		select {
+		case err := <-ch:
+			return err
+		case <-ctx.Done():
+			return ctx.Err()
+		}
 	})
 
 	errGroup.Go(func() error {
-		err := m.muxWriter.run(m.config.Logger)
-		m.explicitShutdown.Fuse(false)
-		m.w.Close()
-		m.abort()
-		return err
+		ch := make(chan error)
+		go func() {
+			err := m.muxWriter.run(m.config.Logger)
+			m.explicitShutdown.Fuse(false)
+			m.w.Close()
+			m.abort()
+			// don't block if parent goroutine quit early
+			select {
+			case ch <- err:
+			default:
+			}
+		}()
+		select {
+		case err := <-ch:
+			return err
+		case <-ctx.Done():
+			return ctx.Err()
+		}
 	})
 
 	errGroup.Go(func() error {
-		err := m.muxMetricsUpdater.run(m.config.Logger)
-		return err
+		ch := make(chan error)
+		go func() {
+			err := m.muxMetricsUpdater.run(m.config.Logger)
+			// don't block if parent goroutine quit early
+			select {
+			case ch <- err:
+			default:
+			}
+		}()
+		select {
+		case err := <-ch:
+			return err
+		case <-ctx.Done():
+			return ctx.Err()
+		}
 	})
 
 	err := errGroup.Wait()

h2mux/header.go

@@ -0,0 +1,249 @@
+package h2mux
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/pkg/errors"
+)
+
+type Header struct {
+	Name, Value string
+}
+
+var headerEncoding = base64.RawStdEncoding
+
+const (
+	RequestUserHeadersField  = "cf-cloudflared-request-headers"
+	ResponseUserHeadersField = "cf-cloudflared-response-headers"
+
+	ResponseMetaHeaderField   = "cf-cloudflared-response-meta"
+	ResponseSourceCloudflared = "cloudflared"
+	ResponseSourceOrigin      = "origin"
+)
+
+// H2RequestHeadersToH1Request converts the HTTP/2 headers coming from origintunneld
+// to an HTTP/1 Request object destined for the local origin web service.
+// This operation includes conversion of the pseudo-headers into their closest
+// HTTP/1 equivalents. See https://tools.ietf.org/html/rfc7540#section-8.1.2.3
+func H2RequestHeadersToH1Request(h2 []Header, h1 *http.Request) error {
+	for _, header := range h2 {
+		if !IsControlHeader(header.Name) {
+			continue
+		}
+
+		switch strings.ToLower(header.Name) {
+		case ":method":
+			h1.Method = header.Value
+		case ":scheme":
+			// noop - use the preexisting scheme from h1.URL
+		case ":authority":
+			// Otherwise the host header will be based on the origin URL
+			h1.Host = header.Value
+		case ":path":
+			// We don't want to be an "opinionated" proxy, so ideally we would use :path as-is.
+			// However, this HTTP/1 Request object belongs to the Go standard library,
+			// whose URL package makes some opinionated decisions about the encoding of
+			// URL characters: see the docs of https://godoc.org/net/url#URL,
+			// in particular the EscapedPath method https://godoc.org/net/url#URL.EscapedPath,
+			// which is always used when computing url.URL.String(), whether we'd like it or not.
+			//
+			// Well, not *always*. We could circumvent this by using url.URL.Opaque. But
+			// that would present unusual difficulties when using an HTTP proxy: url.URL.Opaque
+			// is treated differently when HTTP_PROXY is set!
+			// See https://github.com/golang/go/issues/5684#issuecomment-66080888
+			//
+			// This means we are subject to the behavior of net/url's function `shouldEscape`
+			// (as invoked with mode=encodePath): https://github.com/golang/go/blob/go1.12.7/src/net/url/url.go#L101
+
+			if header.Value == "*" {
+				h1.URL.Path = "*"
+				continue
+			}
+			// Due to the behavior of validation.ValidateUrl, h1.URL may
+			// already have a partial value, with or without a trailing slash.
+			base := h1.URL.String()
+			base = strings.TrimRight(base, "/")
+			// But we know :path begins with '/', because we handled '*' above - see RFC7540
+			requestURL, err := url.Parse(base + header.Value)
+			if err != nil {
+				return errors.Wrap(err, fmt.Sprintf("invalid path '%v'", header.Value))
+			}
+			h1.URL = requestURL
+		case "content-length":
+			contentLength, err := strconv.ParseInt(header.Value, 10, 64)
+			if err != nil {
+				return fmt.Errorf("unparseable content length")
+			}
+			h1.ContentLength = contentLength
+		case RequestUserHeadersField:
+			// Do not forward the serialized headers to the origin -- deserialize them, and ditch the serialized version
+			// Find and parse user headers serialized into a single one
+			userHeaders, err := ParseUserHeaders(RequestUserHeadersField, h2)
+			if err != nil {
+				return errors.Wrap(err, "Unable to parse user headers")
+			}
+			for _, userHeader := range userHeaders {
+				h1.Header.Add(http.CanonicalHeaderKey(userHeader.Name), userHeader.Value)
+			}
+		default:
+			// All other control headers shall just be proxied transparently
+			h1.Header.Add(http.CanonicalHeaderKey(header.Name), header.Value)
+		}
+	}
+
+	return nil
+}
+
+func ParseUserHeaders(headerNameToParseFrom string, headers []Header) ([]Header, error) {
+	for _, header := range headers {
+		if header.Name == headerNameToParseFrom {
+			return DeserializeHeaders(header.Value)
+		}
+	}
+
+	return nil, fmt.Errorf("%v header not found", RequestUserHeadersField)
+}
+
+func IsControlHeader(headerName string) bool {
+	headerName = strings.ToLower(headerName)
+
+	return headerName == "content-length" ||
+		headerName == "connection" || headerName == "upgrade" || // Websocket headers
+		strings.HasPrefix(headerName, ":") ||
+		strings.HasPrefix(headerName, "cf-")
+}
+
+// IsWebsocketClientHeader returns true if the header name is required by the client to upgrade properly
+func IsWebsocketClientHeader(headerName string) bool {
+	headerName = strings.ToLower(headerName)
+
+	return headerName == "sec-websocket-accept" ||
+		headerName == "connection" ||
+		headerName == "upgrade"
+}
+
+func H1ResponseToH2ResponseHeaders(h1 *http.Response) (h2 []Header) {
+	h2 = []Header{
+		{Name: ":status", Value: strconv.Itoa(h1.StatusCode)},
+	}
+	userHeaders := http.Header{}
+	for header, values := range h1.Header {
+		for _, value := range values {
+			if strings.ToLower(header) == "content-length" {
+				// This header has meaning in HTTP/2 and will be used by the edge,
+				// so it should be sent as an HTTP/2 response header.
+
+				// Since these are http2 headers, they're required to be lowercase
+				h2 = append(h2, Header{Name: strings.ToLower(header), Value: value})
+			} else if !IsControlHeader(header) || IsWebsocketClientHeader(header) {
+				// User headers, on the other hand, must all be serialized so that
+				// HTTP/2 header validation won't be applied to HTTP/1 header values
+				if _, ok := userHeaders[header]; ok {
+					userHeaders[header] = append(userHeaders[header], value)
+				} else {
+					userHeaders[header] = []string{value}
+				}
+			}
+		}
+	}
+
+	// Perform user header serialization and set them in the single header
+	h2 = append(h2, CreateSerializedHeaders(ResponseUserHeadersField, userHeaders)...)
+
+	return h2
+}
+
+// Serialize HTTP1.x headers by base64-encoding each header name and value,
+// and then joining them in the format of [key:value;]
+func SerializeHeaders(h1Headers http.Header) string {
+	var serializedHeaders []string
+	for headerName, headerValues := range h1Headers {
+		for _, headerValue := range headerValues {
+			encodedName := make([]byte, headerEncoding.EncodedLen(len(headerName)))
+			headerEncoding.Encode(encodedName, []byte(headerName))
+
+			encodedValue := make([]byte, headerEncoding.EncodedLen(len(headerValue)))
+			headerEncoding.Encode(encodedValue, []byte(headerValue))
+
+			serializedHeaders = append(
+				serializedHeaders,
+				strings.Join(
+					[]string{string(encodedName), string(encodedValue)},
+					":",
+				),
+			)
+		}
+	}
+
+	return strings.Join(serializedHeaders, ";")
+}
+
+// Deserialize headers serialized by `SerializeHeader`
+func DeserializeHeaders(serializedHeaders string) ([]Header, error) {
+	const unableToDeserializeErr = "Unable to deserialize headers"
+
+	var deserialized []Header
+	for _, serializedPair := range strings.Split(serializedHeaders, ";") {
+		if len(serializedPair) == 0 {
+			continue
+		}
+
+		serializedHeaderParts := strings.Split(serializedPair, ":")
+		if len(serializedHeaderParts) != 2 {
+			return nil, errors.New(unableToDeserializeErr)
+		}
+
+		serializedName := serializedHeaderParts[0]
+		serializedValue := serializedHeaderParts[1]
+		deserializedName := make([]byte, headerEncoding.DecodedLen(len(serializedName)))
+		deserializedValue := make([]byte, headerEncoding.DecodedLen(len(serializedValue)))
+
+		if _, err := headerEncoding.Decode(deserializedName, []byte(serializedName)); err != nil {
+			return nil, errors.Wrap(err, unableToDeserializeErr)
+		}
+		if _, err := headerEncoding.Decode(deserializedValue, []byte(serializedValue)); err != nil {
+			return nil, errors.Wrap(err, unableToDeserializeErr)
+		}
+
+		deserialized = append(deserialized, Header{
+			Name:  string(deserializedName),
+			Value: string(deserializedValue),
+		})
+	}
+
+	return deserialized, nil
+}
+
+func CreateSerializedHeaders(headersField string, headers ...http.Header) []Header {
+	var serializedHeaderChunks []string
+	for _, headerChunk := range headers {
+		serializedHeaderChunks = append(serializedHeaderChunks, SerializeHeaders(headerChunk))
+	}
+
+	return []Header{{
+		headersField,
+		strings.Join(serializedHeaderChunks, ";"),
+	}}
+}
+
+type ResponseMetaHeader struct {
+	Source string `json:"src"`
+}
+
+func CreateResponseMetaHeader(headerName, source string) Header {
+	jsonResponseMetaHeader, err := json.Marshal(ResponseMetaHeader{Source: source})
+	if err != nil {
+		panic(err)
+	}
+
+	return Header{
+		Name:  headerName,
+		Value: string(jsonResponseMetaHeader),
+	}
+}

h2mux/header_test.go

@@ -0,0 +1,652 @@
+package h2mux
+
+import (
+	"fmt"
+	"math/rand"
+	"net/http"
+	"net/url"
+	"reflect"
+	"regexp"
+	"sort"
+	"strings"
+	"testing"
+	"testing/quick"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+type ByName []Header
+
+func (a ByName) Len() int      { return len(a) }
+func (a ByName) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
+func (a ByName) Less(i, j int) bool {
+	if a[i].Name == a[j].Name {
+		return a[i].Value < a[j].Value
+	}
+
+	return a[i].Name < a[j].Name
+}
+
+func TestH2RequestHeadersToH1Request_RegularHeaders(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
+	assert.NoError(t, err)
+
+	mockHeaders := http.Header{
+		"Mock header 1": {"Mock value 1"},
+		"Mock header 2": {"Mock value 2"},
+	}
+
+	headersConversionErr := H2RequestHeadersToH1Request(CreateSerializedHeaders(RequestUserHeadersField, mockHeaders), request)
+
+	assert.True(t, reflect.DeepEqual(mockHeaders, request.Header))
+	assert.NoError(t, headersConversionErr)
+}
+
+func TestH2RequestHeadersToH1Request_NoHeaders(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
+	assert.NoError(t, err)
+
+	headersConversionErr := H2RequestHeadersToH1Request(
+		[]Header{{
+			RequestUserHeadersField,
+			SerializeHeaders(http.Header{}),
+		}},
+		request,
+	)
+
+	assert.True(t, reflect.DeepEqual(http.Header{}, request.Header))
+	assert.NoError(t, headersConversionErr)
+}
+
+func TestH2RequestHeadersToH1Request_InvalidHostPath(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
+	assert.NoError(t, err)
+
+	mockRequestHeaders := []Header{
+		{Name: ":path", Value: "//bad_path/"},
+		{Name: RequestUserHeadersField, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
+	}
+
+	headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
+
+	assert.Equal(t, http.Header{
+		"Mock header": []string{"Mock value"},
+	}, request.Header)
+
+	assert.Equal(t, "http://example.com//bad_path/", request.URL.String())
+
+	assert.NoError(t, headersConversionErr)
+}
+
+func TestH2RequestHeadersToH1Request_HostPathWithQuery(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "http://example.com/", nil)
+	assert.NoError(t, err)
+
+	mockRequestHeaders := []Header{
+		{Name: ":path", Value: "/?query=mock%20value"},
+		{Name: RequestUserHeadersField, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
+	}
+
+	headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
+
+	assert.Equal(t, http.Header{
+		"Mock header": []string{"Mock value"},
+	}, request.Header)
+
+	assert.Equal(t, "http://example.com/?query=mock%20value", request.URL.String())
+
+	assert.NoError(t, headersConversionErr)
+}
+
+func TestH2RequestHeadersToH1Request_HostPathWithURLEncoding(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "http://example.com/", nil)
+	assert.NoError(t, err)
+
+	mockRequestHeaders := []Header{
+		{Name: ":path", Value: "/mock%20path"},
+		{Name: RequestUserHeadersField, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
+	}
+
+	headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
+
+	assert.Equal(t, http.Header{
+		"Mock header": []string{"Mock value"},
+	}, request.Header)
+
+	assert.Equal(t, "http://example.com/mock%20path", request.URL.String())
+
+	assert.NoError(t, headersConversionErr)
+}
+
+func TestH2RequestHeadersToH1Request_WeirdURLs(t *testing.T) {
+	type testCase struct {
+		path string
+		want string
+	}
+	testCases := []testCase{
+		{
+			path: "",
+			want: "",
+		},
+		{
+			path: "/",
+			want: "/",
+		},
+		{
+			path: "//",
+			want: "//",
+		},
+		{
+			path: "/test",
+			want: "/test",
+		},
+		{
+			path: "//test",
+			want: "//test",
+		},
+		{
+			// https://github.com/cloudflare/cloudflared/issues/81
+			path: "//test/",
+			want: "//test/",
+		},
+		{
+			path: "/%2Ftest",
+			want: "/%2Ftest",
+		},
+		{
+			path: "//%20test",
+			want: "//%20test",
+		},
+		{
+			// https://github.com/cloudflare/cloudflared/issues/124
+			path: "/test?get=somthing%20a",
+			want: "/test?get=somthing%20a",
+		},
+		{
+			path: "/%20",
+			want: "/%20",
+		},
+		{
+			// stdlib's EscapedPath() will always percent-encode ' '
+			path: "/ ",
+			want: "/%20",
+		},
+		{
+			path: "/ a ",
+			want: "/%20a%20",
+		},
+		{
+			path: "/a%20b",
+			want: "/a%20b",
+		},
+		{
+			path: "/foo/bar;param?query#frag",
+			want: "/foo/bar;param?query#frag",
+		},
+		{
+			// stdlib's EscapedPath() will always percent-encode non-ASCII chars
+			path: "/a␠b",
+			want: "/a%E2%90%A0b",
+		},
+		{
+			path: "/a-umlaut-ä",
+			want: "/a-umlaut-%C3%A4",
+		},
+		{
+			path: "/a-umlaut-%C3%A4",
+			want: "/a-umlaut-%C3%A4",
+		},
+		{
+			path: "/a-umlaut-%c3%a4",
+			want: "/a-umlaut-%c3%a4",
+		},
+		{
+			// here the second '#' is treated as part of the fragment
+			path: "/a#b#c",
+			want: "/a#b%23c",
+		},
+		{
+			path: "/a#b␠c",
+			want: "/a#b%E2%90%A0c",
+		},
+		{
+			path: "/a#b%20c",
+			want: "/a#b%20c",
+		},
+		{
+			path: "/a#b c",
+			want: "/a#b%20c",
+		},
+		{
+			// stdlib's EscapedPath() will always percent-encode '\'
+			path: "/\\",
+			want: "/%5C",
+		},
+		{
+			path: "/a\\",
+			want: "/a%5C",
+		},
+		{
+			path: "/a,b.c.",
+			want: "/a,b.c.",
+		},
+		{
+			path: "/.",
+			want: "/.",
+		},
+		{
+			// stdlib's EscapedPath() will always percent-encode '`'
+			path: "/a`",
+			want: "/a%60",
+		},
+		{
+			path: "/a[0]",
+			want: "/a[0]",
+		},
+		{
+			path: "/?a[0]=5 &b[]=",
+			want: "/?a[0]=5 &b[]=",
+		},
+		{
+			path: "/?a=%22b%20%22",
+			want: "/?a=%22b%20%22",
+		},
+	}
+
+	for index, testCase := range testCases {
+		requestURL := "https://example.com"
+
+		request, err := http.NewRequest(http.MethodGet, requestURL, nil)
+		assert.NoError(t, err)
+
+		mockRequestHeaders := []Header{
+			{Name: ":path", Value: testCase.path},
+			{Name: RequestUserHeadersField, Value: SerializeHeaders(http.Header{"Mock header": {"Mock value"}})},
+		}
+
+		headersConversionErr := H2RequestHeadersToH1Request(mockRequestHeaders, request)
+		assert.NoError(t, headersConversionErr)
+
+		assert.Equal(t,
+			http.Header{
+				"Mock header": []string{"Mock value"},
+			},
+			request.Header)
+
+		assert.Equal(t,
+			"https://example.com"+testCase.want,
+			request.URL.String(),
+			"Failed URL index: %v %#v", index, testCase)
+	}
+}
+
+func TestH2RequestHeadersToH1Request_QuickCheck(t *testing.T) {
+	config := &quick.Config{
+		Values: func(args []reflect.Value, rand *rand.Rand) {
+			args[0] = reflect.ValueOf(randomHTTP2Path(t, rand))
+		},
+	}
+
+	type testOrigin struct {
+		url string
+
+		expectedScheme   string
+		expectedBasePath string
+	}
+	testOrigins := []testOrigin{
+		{
+			url:              "http://origin.hostname.example.com:8080",
+			expectedScheme:   "http",
+			expectedBasePath: "http://origin.hostname.example.com:8080",
+		},
+		{
+			url:              "http://origin.hostname.example.com:8080/",
+			expectedScheme:   "http",
+			expectedBasePath: "http://origin.hostname.example.com:8080",
+		},
+		{
+			url:              "http://origin.hostname.example.com:8080/api",
+			expectedScheme:   "http",
+			expectedBasePath: "http://origin.hostname.example.com:8080/api",
+		},
+		{
+			url:              "http://origin.hostname.example.com:8080/api/",
+			expectedScheme:   "http",
+			expectedBasePath: "http://origin.hostname.example.com:8080/api",
+		},
+		{
+			url:              "https://origin.hostname.example.com:8080/api",
+			expectedScheme:   "https",
+			expectedBasePath: "https://origin.hostname.example.com:8080/api",
+		},
+	}
+
+	// use multiple schemes to demonstrate that the URL is based on the
+	// origin's scheme, not the :scheme header
+	for _, testScheme := range []string{"http", "https"} {
+		for _, testOrigin := range testOrigins {
+			assertion := func(testPath string) bool {
+				const expectedMethod = "POST"
+				const expectedHostname = "request.hostname.example.com"
+
+				h2 := []Header{
+					{Name: ":method", Value: expectedMethod},
+					{Name: ":scheme", Value: testScheme},
+					{Name: ":authority", Value: expectedHostname},
+					{Name: ":path", Value: testPath},
+					{Name: RequestUserHeadersField, Value: ""},
+				}
+				h1, err := http.NewRequest("GET", testOrigin.url, nil)
+				require.NoError(t, err)
+
+				err = H2RequestHeadersToH1Request(h2, h1)
+				return assert.NoError(t, err) &&
+					assert.Equal(t, expectedMethod, h1.Method) &&
+					assert.Equal(t, expectedHostname, h1.Host) &&
+					assert.Equal(t, testOrigin.expectedScheme, h1.URL.Scheme) &&
+					assert.Equal(t, testOrigin.expectedBasePath+testPath, h1.URL.String())
+			}
+			err := quick.Check(assertion, config)
+			assert.NoError(t, err)
+		}
+	}
+}
+
+func randomASCIIPrintableChar(rand *rand.Rand) int {
+	// smallest printable ASCII char is 32, largest is 126
+	const startPrintable = 32
+	const endPrintable = 127
+	return startPrintable + rand.Intn(endPrintable-startPrintable)
+}
+
+// randomASCIIText generates an ASCII string, some of whose characters may be
+// percent-encoded. Its "logical length" (ignoring percent-encoding) is
+// between 1 and `maxLength`.
+func randomASCIIText(rand *rand.Rand, minLength int, maxLength int) string {
+	length := minLength + rand.Intn(maxLength)
+	result := ""
+	for i := 0; i < length; i++ {
+		c := randomASCIIPrintableChar(rand)
+
+		// 1/4 chance of using percent encoding when not necessary
+		if c == '%' || rand.Intn(4) == 0 {
+			result += fmt.Sprintf("%%%02X", c)
+		} else {
+			result += string(c)
+		}
+	}
+	return result
+}
+
+// Calls `randomASCIIText` and ensures the result is a valid URL path,
+// i.e. one that can pass unchanged through url.URL.String()
+func randomHTTP1Path(t *testing.T, rand *rand.Rand, minLength int, maxLength int) string {
+	text := randomASCIIText(rand, minLength, maxLength)
+	re, err := regexp.Compile("[^/;,]*")
+	require.NoError(t, err)
+	return "/" + re.ReplaceAllStringFunc(text, url.PathEscape)
+}
+
+// Calls `randomASCIIText` and ensures the result is a valid URL query,
+// i.e. one that can pass unchanged through url.URL.String()
+func randomHTTP1Query(rand *rand.Rand, minLength int, maxLength int) string {
+	text := randomASCIIText(rand, minLength, maxLength)
+	return "?" + strings.ReplaceAll(text, "#", "%23")
+}
+
+// Calls `randomASCIIText` and ensures the result is a valid URL fragment,
+// i.e. one that can pass unchanged through url.URL.String()
+func randomHTTP1Fragment(t *testing.T, rand *rand.Rand, minLength int, maxLength int) string {
+	text := randomASCIIText(rand, minLength, maxLength)
+	u, err := url.Parse("#" + text)
+	require.NoError(t, err)
+	return u.String()
+}
+
+// Assemble a random :path pseudoheader that is legal by Go stdlib standards
+// (i.e. all characters will satisfy "net/url".shouldEscape for their respective locations)
+func randomHTTP2Path(t *testing.T, rand *rand.Rand) string {
+	result := randomHTTP1Path(t, rand, 1, 64)
+	if rand.Intn(2) == 1 {
+		result += randomHTTP1Query(rand, 1, 32)
+	}
+	if rand.Intn(2) == 1 {
+		result += randomHTTP1Fragment(t, rand, 1, 16)
+	}
+	return result
+}
+
+func stdlibHeaderToH2muxHeader(headers http.Header) (h2muxHeaders []Header) {
+	for name, values := range headers {
+		for _, value := range values {
+			h2muxHeaders = append(h2muxHeaders, Header{name, value})
+		}
+	}
+
+	return h2muxHeaders
+}
+
+func TestSerializeHeaders(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
+	assert.NoError(t, err)
+
+	mockHeaders := http.Header{
+		"Mock-Header-One":        {"Mock header one value", "three"},
+		"Mock-Header-Two-Long":   {"Mock header two value\nlong"},
+		":;":                     {":;", ";:"},
+		":":                      {":"},
+		";":                      {";"},
+		";;":                     {";;"},
+		"Empty values":           {"", ""},
+		"":                       {"Empty key"},
+		"control\tcharacter\b\n": {"value\n\b\t"},
+		";\v:":                   {":\v;"},
+	}
+
+	for header, values := range mockHeaders {
+		for _, value := range values {
+			// Note that Golang's http library is opinionated;
+			// at this point every header name will be title-cased in order to comply with the HTTP RFC
+			// This means our proxy is not completely transparent when it comes to proxying headers
+			request.Header.Add(header, value)
+		}
+	}
+
+	serializedHeaders := SerializeHeaders(request.Header)
+
+	// Sanity check: the headers serialized to something that's not an empty string
+	assert.NotEqual(t, "", serializedHeaders)
+
+	// Deserialize back, and ensure we get the same set of headers
+	deserializedHeaders, err := DeserializeHeaders(serializedHeaders)
+	assert.NoError(t, err)
+
+	assert.Equal(t, 13, len(deserializedHeaders))
+	h2muxExpectedHeaders := stdlibHeaderToH2muxHeader(mockHeaders)
+
+	sort.Sort(ByName(deserializedHeaders))
+	sort.Sort(ByName(h2muxExpectedHeaders))
+
+	assert.True(
+		t,
+		reflect.DeepEqual(h2muxExpectedHeaders, deserializedHeaders),
+		fmt.Sprintf("got = %#v, want = %#v\n", deserializedHeaders, h2muxExpectedHeaders),
+	)
+}
+
+func TestSerializeNoHeaders(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
+	assert.NoError(t, err)
+
+	serializedHeaders := SerializeHeaders(request.Header)
+	deserializedHeaders, err := DeserializeHeaders(serializedHeaders)
+	assert.NoError(t, err)
+	assert.Equal(t, 0, len(deserializedHeaders))
+}
+
+func TestDeserializeMalformed(t *testing.T) {
+	var err error
+
+	malformedData := []string{
+		"malformed data",
+		"bW9jawo=",                   // "mock"
+		"bW9jawo=:ZGF0YQo=:bW9jawo=", // "mock:data:mock"
+		"::",
+	}
+
+	for _, malformedValue := range malformedData {
+		_, err = DeserializeHeaders(malformedValue)
+		assert.Error(t, err)
+	}
+}
+
+func TestParseHeaders(t *testing.T) {
+	mockUserHeadersToSerialize := http.Header{
+		"Mock-Header-One":   {"1", "1.5"},
+		"Mock-Header-Two":   {"2"},
+		"Mock-Header-Three": {"3"},
+	}
+
+	mockHeaders := []Header{
+		{Name: "One", Value: "1"},
+		{Name: "Cf-Two", Value: "cf-value-1"},
+		{Name: "Cf-Two", Value: "cf-value-2"},
+		{Name: RequestUserHeadersField, Value: SerializeHeaders(mockUserHeadersToSerialize)},
+	}
+
+	expectedHeaders := []Header{
+		{Name: "Mock-Header-One", Value: "1"},
+		{Name: "Mock-Header-One", Value: "1.5"},
+		{Name: "Mock-Header-Two", Value: "2"},
+		{Name: "Mock-Header-Three", Value: "3"},
+	}
+	parsedHeaders, err := ParseUserHeaders(RequestUserHeadersField, mockHeaders)
+	assert.NoError(t, err)
+	assert.ElementsMatch(t, expectedHeaders, parsedHeaders)
+}
+
+func TestParseHeadersNoSerializedHeader(t *testing.T) {
+	mockHeaders := []Header{
+		{Name: "One", Value: "1"},
+		{Name: "Cf-Two", Value: "cf-value-1"},
+		{Name: "Cf-Two", Value: "cf-value-2"},
+	}
+
+	_, err := ParseUserHeaders(RequestUserHeadersField, mockHeaders)
+	assert.EqualError(t, err, fmt.Sprintf("%s header not found", RequestUserHeadersField))
+}
+
+func TestIsControlHeader(t *testing.T) {
+	controlHeaders := []string{
+		// Anything that begins with cf-
+		"cf-sample-header",
+		"CF-SAMPLE-HEADER",
+		"Cf-Sample-Header",
+
+		// Any http2 pseudoheader
+		":sample-pseudo-header",
+
+		// content-length is a special case, it has to be there
+		// for some requests to work (per the HTTP2 spec)
+		"content-length",
+	}
+
+	for _, header := range controlHeaders {
+		assert.True(t, IsControlHeader(header))
+	}
+}
+
+func TestIsNotControlHeader(t *testing.T) {
+	notControlHeaders := []string{
+		"Mock-header",
+		"Another-sample-header",
+	}
+
+	for _, header := range notControlHeaders {
+		assert.False(t, IsControlHeader(header))
+	}
+}
+
+func TestH1ResponseToH2ResponseHeaders(t *testing.T) {
+	mockHeaders := http.Header{
+		"User-header-one": {""},
+		"User-header-two": {"1", "2"},
+		"cf-header":       {"cf-value"},
+		"Content-Length":  {"123"},
+	}
+	mockResponse := http.Response{
+		StatusCode: 200,
+		Header:     mockHeaders,
+	}
+
+	headers := H1ResponseToH2ResponseHeaders(&mockResponse)
+
+	serializedHeadersIndex := -1
+	for i, header := range headers {
+		if header.Name == ResponseUserHeadersField {
+			serializedHeadersIndex = i
+			break
+		}
+	}
+	assert.NotEqual(t, -1, serializedHeadersIndex)
+	actualControlHeaders := append(
+		headers[:serializedHeadersIndex],
+		headers[serializedHeadersIndex+1:]...,
+	)
+	expectedControlHeaders := []Header{
+		{Name: ":status", Value: "200"},
+		{Name: "content-length", Value: "123"},
+	}
+
+	assert.ElementsMatch(t, expectedControlHeaders, actualControlHeaders)
+
+	actualUserHeaders, err := DeserializeHeaders(headers[serializedHeadersIndex].Value)
+	expectedUserHeaders := []Header{
+		{Name: "User-header-one", Value: ""},
+		{Name: "User-header-two", Value: "1"},
+		{Name: "User-header-two", Value: "2"},
+	}
+	assert.NoError(t, err)
+	assert.ElementsMatch(t, expectedUserHeaders, actualUserHeaders)
+}
+
+// The purpose of this test is to check that our code and the http.Header
+// implementation don't throw validation errors about header size
+func TestHeaderSize(t *testing.T) {
+	largeValue := randSeq(5 * 1024 * 1024) // 5Mb
+	largeHeaders := http.Header{
+		"User-header": {largeValue},
+	}
+	mockResponse := http.Response{
+		StatusCode: 200,
+		Header:     largeHeaders,
+	}
+
+	serializedHeaders := H1ResponseToH2ResponseHeaders(&mockResponse)
+	request, err := http.NewRequest(http.MethodGet, "https://example.com/", nil)
+	assert.NoError(t, err)
+	for _, header := range serializedHeaders {
+		request.Header.Set(header.Name, header.Value)
+	}
+
+	for _, header := range serializedHeaders {
+		if header.Name != ResponseUserHeadersField {
+			continue
+		}
+
+		deserializedHeaders, err := DeserializeHeaders(header.Value)
+		assert.NoError(t, err)
+		assert.Equal(t, largeValue, deserializedHeaders[0].Value)
+	}
+}
+
+func randSeq(n int) string {
+	randomizer := rand.New(rand.NewSource(17))
+	var letters = []rune(":;,+/=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
+	b := make([]rune, n)
+	for i := range b {
+		b[i] = letters[randomizer.Intn(len(letters))]
+	}
+	return string(b)
+}

h2mux/muxwriter.go

@@ -250,28 +250,52 @@ func (w *MuxWriter) encodeHeaders(headers []Header) ([]byte, error) {
 // writeHeaders writes a block of encoded headers, splitting it into multiple frames if necessary.
 func (w *MuxWriter) writeHeaders(streamID uint32, headers []Header) error {
 	encodedHeaders, err := w.encodeHeaders(headers)
-	if err != nil {
+	if err != nil || len(encodedHeaders) == 0 {
 		return err
 	}
+
 	blockSize := int(w.maxFrameSize)
-	endHeaders := len(encodedHeaders) == 0
-	for !endHeaders && err == nil {
-		blockFragment := encodedHeaders
-		if len(encodedHeaders) > blockSize {
-			blockFragment = blockFragment[:blockSize]
-			encodedHeaders = encodedHeaders[blockSize:]
-			// Send CONTINUATION frame if the headers can't be fit into 1 frame
-			err = w.f.WriteContinuation(streamID, endHeaders, blockFragment)
-		} else {
-			endHeaders = true
-			err = w.f.WriteHeaders(http2.HeadersFrameParam{
-				StreamID:      streamID,
-				EndHeaders:    endHeaders,
-				BlockFragment: blockFragment,
-			})
+	// CONTINUATION is unnecessary; the headers fit within the blockSize
+	if len(encodedHeaders) < blockSize {
+		return w.f.WriteHeaders(http2.HeadersFrameParam{
+			StreamID:      streamID,
+			EndHeaders:    true,
+			BlockFragment: encodedHeaders,
+		})
+	}
+
+	choppedHeaders := chopEncodedHeaders(encodedHeaders, blockSize)
+	// len(choppedHeaders) is at least 2
+	if err := w.f.WriteHeaders(http2.HeadersFrameParam{StreamID: streamID, EndHeaders: false, BlockFragment: choppedHeaders[0]}); err != nil {
+		return err
+	}
+	for i := 1; i < len(choppedHeaders)-1; i++ {
+		if err := w.f.WriteContinuation(streamID, false, choppedHeaders[i]); err != nil {
+			return err
 		}
 	}
-	return err
+	if err := w.f.WriteContinuation(streamID, true, choppedHeaders[len(choppedHeaders)-1]); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// Partition a slice of bytes into `len(slice) / blockSize` slices of length `blockSize`
+func chopEncodedHeaders(headers []byte, chunkSize int) [][]byte {
+	var divided [][]byte
+
+	for i := 0; i < len(headers); i += chunkSize {
+		end := i + chunkSize
+
+		if end > len(headers) {
+			end = len(headers)
+		}
+
+		divided = append(divided, headers[i:end])
+	}
+
+	return divided
 }
 
 func (w *MuxWriter) writeUseDictionary(dictRequest useDictRequest) error {

h2mux/muxwriter_test.go

@@ -0,0 +1,26 @@
+package h2mux
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestChopEncodedHeaders(t *testing.T) {
+	mockEncodedHeaders := make([]byte, 5)
+	for i := range mockEncodedHeaders {
+		mockEncodedHeaders[i] = byte(i)
+	}
+	chopped := chopEncodedHeaders(mockEncodedHeaders, 4)
+
+	assert.Equal(t, 2, len(chopped))
+	assert.Equal(t, []byte{0, 1, 2, 3}, chopped[0])
+	assert.Equal(t, []byte{4}, chopped[1])
+}
+
+func TestChopEncodedEmptyHeaders(t *testing.T) {
+	mockEncodedHeaders := make([]byte, 0)
+	chopped := chopEncodedHeaders(mockEncodedHeaders, 3)
+
+	assert.Equal(t, 0, len(chopped))
+}

h2mux/sample/index.html

@@ -80,7 +80,7 @@ ghost.init({
     <link rel="alternate" type="application/rss+xml" title="Cloudflare Blog" href="https://blog.cloudflare.com/rss/" />
     <meta name="msvalidate.01" content="CF295E1604697F9CAD18B5A232E871F6" />
 <meta class="swiftype" name="language" data-type="string" content="en" />
-<script src="https://s3-us-west-1.amazonaws.com/cf-ghost-assets-hotfix/js/index.js"></script>
+<script src="https://blog.cloudflare.com/assets/js/index.js"></script>
 <script type="text/javascript" src="//cdn.bizible.com/scripts/bizible.js" async=""></script>
 <script>
 var trackRecruitingLink = function(role, url) {
@@ -128,7 +128,7 @@ HTMLAttrToAdd.setAttribute("lang", "en");
         overflow-y: scroll;
     }
 </style>
-<link href="https://s3-us-west-1.amazonaws.com/cf-ghost-assets-hotfix/css/screen.css" rel="stylesheet">
+<link href="https://blog.cloudflare.com/assets/css/screen.css" rel="stylesheet">
 <link href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.8.1/themes/prism.min.css" rel="stylesheet">
 
     <style>

h2mux/sample/index1.html

@@ -113,7 +113,7 @@ ghost.init({
     <link rel="alternate" type="application/rss+xml" title="Cloudflare Blog" href="https://blog.cloudflare.com/rss/" />
     <meta name="msvalidate.01" content="CF295E1604697F9CAD18B5A232E871F6" />
 <meta class="swiftype" name="language" data-type="string" content="en" />
-<script src="https://s3-us-west-1.amazonaws.com/cf-ghost-assets-hotfix/js/index.js"></script>
+<script src="https://blog.cloudflare.com/assets/js/index.js"></script>
 <script type="text/javascript" src="//cdn.bizible.com/scripts/bizible.js" async=""></script>
 <script>
 var trackRecruitingLink = function(role, url) {
@@ -161,7 +161,7 @@ HTMLAttrToAdd.setAttribute("lang", "en");
         overflow-y: scroll;
     }
 </style>
-<link href="https://s3-us-west-1.amazonaws.com/cf-ghost-assets-hotfix/css/screen.css" rel="stylesheet">
+<link href="https://blog.cloudflare.com/assets/css/screen.css" rel="stylesheet">
 <link href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.8.1/themes/prism.min.css" rel="stylesheet">
 
     <style>

h2mux/sample/index2.html

@@ -109,7 +109,7 @@ ghost.init({
     <link rel="alternate" type="application/rss+xml" title="Cloudflare Blog" href="https://blog.cloudflare.com/rss/" />
     <meta name="msvalidate.01" content="CF295E1604697F9CAD18B5A232E871F6" />
 <meta class="swiftype" name="language" data-type="string" content="en" />
-<script src="https://s3-us-west-1.amazonaws.com/cf-ghost-assets-hotfix/js/index.js"></script>
+<script src="https://blog.cloudflare.com/assets/js/index.js"></script>
 <script type="text/javascript" src="//cdn.bizible.com/scripts/bizible.js" async=""></script>
 <script>
 var trackRecruitingLink = function(role, url) {
@@ -157,7 +157,7 @@ HTMLAttrToAdd.setAttribute("lang", "en");
         overflow-y: scroll;
     }
 </style>
-<link href="https://s3-us-west-1.amazonaws.com/cf-ghost-assets-hotfix/css/screen.css" rel="stylesheet">
+<link href="https://blog.cloudflare.com/assets/css/screen.css" rel="stylesheet">
 <link href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.8.1/themes/prism.min.css" rel="stylesheet">
 
     <style>

hello/hello.go

@@ -56,7 +56,7 @@ const indexTemplate = `
           <path class="st2" d="M93.6 12.8h-.5c-.1 0-.2.1-.3.2l-.7 2.4c-.3 1-.2 2 .3 2.6.5.6 1.2 1 2.1 1.1l3.7.2c.1 0 .2.1.3.1.1.1.1.2 0 .3-.1.2-.2.3-.4.3l-3.8.2c-2.1.1-4.3 1.8-5.1 3.8l-.2.9c-.1.1 0 .3.2.3h13.2c.2 0 .3-.1.3-.3.2-.8.4-1.7.4-2.6 0-5.2-4.3-9.5-9.5-9.5"/>
           <path class="st3" d="M104.4 30.8c-.5 0-.9-.4-.9-.9s.4-.9.9-.9.9.4.9.9-.4.9-.9.9m0-1.6c-.4 0-.7.3-.7.7 0 .4.3.7.7.7.4 0 .7-.3.7-.7 0-.4-.3-.7-.7-.7m.4 1.2h-.2l-.2-.3h-.2v.3h-.2v-.9h.5c.2 0 .3.1.3.3 0 .1-.1.2-.2.3l.2.3zm-.3-.5c.1 0 .1 0 .1-.1s-.1-.1-.1-.1h-.3v.3h.3zM14.8 29H17v6h3.8v1.9h-6zM23.1 32.9c0-2.3 1.8-4.1 4.3-4.1s4.2 1.8 4.2 4.1-1.8 4.1-4.3 4.1c-2.4 0-4.2-1.8-4.2-4.1m6.3 0c0-1.2-.8-2.2-2-2.2s-2 1-2 2.1.8 2.1 2 2.1c1.2.2 2-.8 2-2M34.3 33.4V29h2.2v4.4c0 1.1.6 1.7 1.5 1.7s1.5-.5 1.5-1.6V29h2.2v4.4c0 2.6-1.5 3.7-3.7 3.7-2.3-.1-3.7-1.2-3.7-3.7M45 29h3.1c2.8 0 4.5 1.6 4.5 3.9s-1.7 4-4.5 4h-3V29zm3.1 5.9c1.3 0 2.2-.7 2.2-2s-.9-2-2.2-2h-.9v4h.9zM55.7 29H62v1.9h-4.1v1.3h3.7V34h-3.7v2.9h-2.2zM65.1 29h2.2v6h3.8v1.9h-6zM76.8 28.9H79l3.4 8H80l-.6-1.4h-3.1l-.6 1.4h-2.3l3.4-8zm2 4.9l-.9-2.2-.9 2.2h1.8zM85.2 29h3.7c1.2 0 2 .3 2.6.9.5.5.7 1.1.7 1.8 0 1.2-.6 2-1.6 2.4l1.9 2.8H90l-1.6-2.4h-1v2.4h-2.2V29zm3.6 3.8c.7 0 1.2-.4 1.2-.9 0-.6-.5-.9-1.2-.9h-1.4v1.9h1.4zM95.3 29h6.4v1.8h-4.2V32h3.8v1.8h-3.8V35h4.3v1.9h-6.5zM10 33.9c-.3.7-1 1.2-1.8 1.2-1.2 0-2-1-2-2.1s.8-2.1 2-2.1c.9 0 1.6.6 1.9 1.3h2.3c-.4-1.9-2-3.3-4.2-3.3-2.4 0-4.3 1.8-4.3 4.1s1.8 4.1 4.2 4.1c2.1 0 3.7-1.4 4.2-3.2H10z"/>
         </svg>
-        <h1 class="f4 f2-ns mt5 fw5">Congrats! You created your first tunnel!</h1>
+        <h1 class="f4 f2-ns mt5 fw5">Congrats! You created a tunnel!</h1>
         <p class="f6 f5-m f4-l measure lh-copy fw3">
           Argo Tunnel exposes locally running applications to the internet by
           running an encrypted, virtual tunnel from your laptop or server to

metrics/metrics.go

@@ -43,7 +43,7 @@ func ServeMetrics(l net.Listener, shutdownC <-chan struct{}, logger *logrus.Logg
 		defer wg.Done()
 		err = server.Serve(l)
 	}()
-	logger.WithField("addr", l.Addr()).Info("Starting metrics server")
+	logger.WithField("addr", fmt.Sprintf("%v/metrics", l.Addr())).Info("Starting metrics server")
 	// server.Serve will hang if server.Shutdown is called before the server is
 	// fully started up. So add artificial delay.
 	time.Sleep(startupTime)

origin/external_control.go

@@ -0,0 +1,21 @@
+package origin
+
+import (
+	"time"
+)
+
+type ReconnectSignal struct {
+	// wait this many seconds before re-establish the connection
+	Delay time.Duration
+}
+
+// Error allows us to use ReconnectSignal as a special error to force connection abort
+func (r *ReconnectSignal) Error() string {
+	return "reconnect signal"
+}
+
+func (r *ReconnectSignal) DelayBeforeReconnect() {
+	if r.Delay > 0 {
+		time.Sleep(r.Delay)
+	}
+}

origin/supervisor.go

@@ -11,7 +11,9 @@ import (
 	"github.com/google/uuid"
 	"github.com/sirupsen/logrus"
 
+	"github.com/cloudflare/cloudflared/buffer"
 	"github.com/cloudflare/cloudflared/connection"
+	"github.com/cloudflare/cloudflared/edgediscovery"
 	"github.com/cloudflare/cloudflared/h2mux"
 	"github.com/cloudflare/cloudflared/signal"
 	tunnelpogs "github.com/cloudflare/cloudflared/tunnelrpc/pogs"
@@ -39,10 +41,12 @@ var (
 	errEventDigestUnset = errors.New("event digest unset")
 )
 
+// Supervisor manages non-declarative tunnels. Establishes TCP connections with the edge, and
+// reconnects them if they disconnect.
 type Supervisor struct {
 	cloudflaredUUID   uuid.UUID
 	config            *TunnelConfig
-	edgeIPs           connection.EdgeServiceDiscoverer
+	edgeIPs           *edgediscovery.Edge
 	lastResolve       time.Time
 	resolverC         chan resolveResult
 	tunnelErrors      chan tunnelError
@@ -54,11 +58,16 @@ type Supervisor struct {
 
 	logger *logrus.Entry
 
-	jwtLock *sync.RWMutex
+	jwtLock sync.RWMutex
 	jwt     []byte
 
-	eventDigestLock *sync.RWMutex
+	eventDigestLock sync.RWMutex
 	eventDigest     []byte
+
+	connDigestLock sync.RWMutex
+	connDigest     map[uint8][]byte
+
+	bufferPool *buffer.Pool
 }
 
 type resolveResult struct {
@@ -73,13 +82,13 @@ type tunnelError struct {
 
 func NewSupervisor(config *TunnelConfig, u uuid.UUID) (*Supervisor, error) {
 	var (
-		edgeIPs connection.EdgeServiceDiscoverer
+		edgeIPs *edgediscovery.Edge
 		err     error
 	)
 	if len(config.EdgeAddrs) > 0 {
-		edgeIPs, err = connection.NewEdgeHostnameResolver(config.EdgeAddrs)
+		edgeIPs, err = edgediscovery.StaticEdge(config.Logger, config.EdgeAddrs)
 	} else {
-		edgeIPs, err = connection.NewEdgeAddrResolver(config.Logger)
+		edgeIPs, err = edgediscovery.ResolveEdge(config.Logger)
 	}
 	if err != nil {
 		return nil, err
@@ -91,14 +100,14 @@ func NewSupervisor(config *TunnelConfig, u uuid.UUID) (*Supervisor, error) {
 		tunnelErrors:      make(chan tunnelError),
 		tunnelsConnecting: map[int]chan struct{}{},
 		logger:            config.Logger.WithField("subsystem", "supervisor"),
-		jwtLock:           &sync.RWMutex{},
-		eventDigestLock:   &sync.RWMutex{},
+		connDigest:        make(map[uint8][]byte),
+		bufferPool:        buffer.NewPool(512 * 1024),
 	}, nil
 }
 
-func (s *Supervisor) Run(ctx context.Context, connectedSignal *signal.Signal) error {
+func (s *Supervisor) Run(ctx context.Context, connectedSignal *signal.Signal, reconnectCh chan ReconnectSignal) error {
 	logger := s.config.Logger
-	if err := s.initialize(ctx, connectedSignal); err != nil {
+	if err := s.initialize(ctx, connectedSignal, reconnectCh); err != nil {
 		return err
 	}
 	var tunnelsWaiting []int
@@ -141,20 +150,14 @@ func (s *Supervisor) Run(ctx context.Context, connectedSignal *signal.Signal) er
 					backoffTimer = backoff.BackoffTimer()
 				}
 
-				// If the error is a dial error, the problem is likely to be network related
-				// try another addr before refreshing since we are likely to get back the
-				// same IPs in the same order. Same problem with duplicate connection error.
-				if s.unusedIPs() && tunnelError.addr != nil {
-					s.edgeIPs.MarkAddrBad(tunnelError.addr)
-				} else {
-					s.refreshEdgeIPs()
-				}
+				// Previously we'd mark the edge address as bad here, but now we'll just silently use
+				// another.
 			}
 		// Backoff was set and its timer expired
 		case <-backoffTimer:
 			backoffTimer = nil
 			for _, index := range tunnelsWaiting {
-				go s.startTunnel(ctx, index, s.newConnectedTunnelSignal(index))
+				go s.startTunnel(ctx, index, s.newConnectedTunnelSignal(index), reconnectCh)
 			}
 			tunnelsActive += len(tunnelsWaiting)
 			tunnelsWaiting = nil
@@ -188,14 +191,9 @@ func (s *Supervisor) Run(ctx context.Context, connectedSignal *signal.Signal) er
 }
 
 // Returns nil if initialization succeeded, else the initialization error.
-func (s *Supervisor) initialize(ctx context.Context, connectedSignal *signal.Signal) error {
+func (s *Supervisor) initialize(ctx context.Context, connectedSignal *signal.Signal, reconnectCh chan ReconnectSignal) error {
 	logger := s.logger
 
-	err := s.edgeIPs.Refresh()
-	if err != nil {
-		logger.Infof("ResolveEdgeIPs err")
-		return err
-	}
 	s.lastResolve = time.Now()
 	availableAddrs := int(s.edgeIPs.AvailableAddrs())
 	if s.config.HAConnections > availableAddrs {
@@ -203,7 +201,7 @@ func (s *Supervisor) initialize(ctx context.Context, connectedSignal *signal.Sig
 		s.config.HAConnections = availableAddrs
 	}
 
-	go s.startFirstTunnel(ctx, connectedSignal)
+	go s.startFirstTunnel(ctx, connectedSignal, reconnectCh)
 	select {
 	case <-ctx.Done():
 		<-s.tunnelErrors
@@ -215,7 +213,7 @@ func (s *Supervisor) initialize(ctx context.Context, connectedSignal *signal.Sig
 	// At least one successful connection, so start the rest
 	for i := 1; i < s.config.HAConnections; i++ {
 		ch := signal.New(make(chan struct{}))
-		go s.startTunnel(ctx, i, ch)
+		go s.startTunnel(ctx, i, ch, reconnectCh)
 		time.Sleep(registrationInterval)
 	}
 	return nil
@@ -223,22 +221,24 @@ func (s *Supervisor) initialize(ctx context.Context, connectedSignal *signal.Sig
 
 // startTunnel starts the first tunnel connection. The resulting error will be sent on
 // s.tunnelErrors. It will send a signal via connectedSignal if registration succeed
-func (s *Supervisor) startFirstTunnel(ctx context.Context, connectedSignal *signal.Signal) {
+func (s *Supervisor) startFirstTunnel(ctx context.Context, connectedSignal *signal.Signal, reconnectCh chan ReconnectSignal) {
 	var (
 		addr *net.TCPAddr
 		err  error
 	)
+	const thisConnID = 0
 	defer func() {
-		s.tunnelErrors <- tunnelError{index: 0, addr: addr, err: err}
+		s.tunnelErrors <- tunnelError{index: thisConnID, addr: addr, err: err}
 	}()
 
-	addr, err = s.edgeIPs.Addr()
+	addr, err = s.edgeIPs.GetAddr(thisConnID)
 	if err != nil {
 		return
 	}
 
-	err = ServeTunnelLoop(ctx, s, s.config, addr, 0, connectedSignal, s.cloudflaredUUID)
-
+	err = ServeTunnelLoop(ctx, s, s.config, addr, thisConnID, connectedSignal, s.cloudflaredUUID, s.bufferPool, reconnectCh)
+	// If the first tunnel disconnects, keep restarting it.
+	edgeErrors := 0
 	for s.unusedIPs() {
 		if ctx.Err() != nil {
 			return
@@ -249,21 +249,23 @@ func (s *Supervisor) startFirstTunnel(ctx context.Context, connectedSignal *sign
 		// try the next address if it was a dialError(network problem) or
 		// dupConnRegisterTunnelError
 		case connection.DialError, dupConnRegisterTunnelError:
-			s.edgeIPs.MarkAddrBad(addr)
+			edgeErrors++
 		default:
 			return
 		}
-		addr, err = s.edgeIPs.Addr()
-		if err != nil {
-			return
+		if edgeErrors >= 2 {
+			addr, err = s.edgeIPs.GetDifferentAddr(thisConnID)
+			if err != nil {
+				return
+			}
 		}
-		err = ServeTunnelLoop(ctx, s, s.config, addr, 0, connectedSignal, s.cloudflaredUUID)
+		err = ServeTunnelLoop(ctx, s, s.config, addr, thisConnID, connectedSignal, s.cloudflaredUUID, s.bufferPool, reconnectCh)
 	}
 }
 
 // startTunnel starts a new tunnel connection. The resulting error will be sent on
 // s.tunnelErrors.
-func (s *Supervisor) startTunnel(ctx context.Context, index int, connectedSignal *signal.Signal) {
+func (s *Supervisor) startTunnel(ctx context.Context, index int, connectedSignal *signal.Signal, reconnectCh chan ReconnectSignal) {
 	var (
 		addr *net.TCPAddr
 		err  error
@@ -272,11 +274,11 @@ func (s *Supervisor) startTunnel(ctx context.Context, index int, connectedSignal
 		s.tunnelErrors <- tunnelError{index: index, addr: addr, err: err}
 	}()
 
-	addr, err = s.edgeIPs.Addr()
+	addr, err = s.edgeIPs.GetDifferentAddr(index)
 	if err != nil {
 		return
 	}
-	err = ServeTunnelLoop(ctx, s, s.config, addr, uint8(index), connectedSignal, s.cloudflaredUUID)
+	err = ServeTunnelLoop(ctx, s, s.config, addr, uint8(index), connectedSignal, s.cloudflaredUUID, s.bufferPool, reconnectCh)
 }
 
 func (s *Supervisor) newConnectedTunnelSignal(index int) *signal.Signal {
@@ -302,20 +304,6 @@ func (s *Supervisor) unusedIPs() bool {
 	return s.edgeIPs.AvailableAddrs() > s.config.HAConnections
 }
 
-func (s *Supervisor) refreshEdgeIPs() {
-	if s.resolverC != nil {
-		return
-	}
-	if time.Since(s.lastResolve) < resolveTTL {
-		return
-	}
-	s.resolverC = make(chan resolveResult)
-	go func() {
-		err := s.edgeIPs.Refresh()
-		s.resolverC <- resolveResult{err: err}
-	}()
-}
-
 func (s *Supervisor) ReconnectToken() ([]byte, error) {
 	s.jwtLock.RLock()
 	defer s.jwtLock.RUnlock()
@@ -346,6 +334,22 @@ func (s *Supervisor) SetEventDigest(eventDigest []byte) {
 	s.eventDigest = eventDigest
 }
 
+func (s *Supervisor) ConnDigest(connID uint8) ([]byte, error) {
+	s.connDigestLock.RLock()
+	defer s.connDigestLock.RUnlock()
+	digest, ok := s.connDigest[connID]
+	if !ok {
+		return nil, fmt.Errorf("no connection digest for connection %v", connID)
+	}
+	return digest, nil
+}
+
+func (s *Supervisor) SetConnDigest(connID uint8, connDigest []byte) {
+	s.connDigestLock.Lock()
+	defer s.connDigestLock.Unlock()
+	s.connDigest[connID] = connDigest
+}
+
 func (s *Supervisor) refreshAuth(
 	ctx context.Context,
 	backoff *BackoffHandler,
@@ -385,7 +389,7 @@ func (s *Supervisor) refreshAuth(
 }
 
 func (s *Supervisor) authenticate(ctx context.Context, numPreviousAttempts int) (tunnelpogs.AuthOutcome, error) {
-	arbitraryEdgeIP, err := s.edgeIPs.AnyAddr()
+	arbitraryEdgeIP, err := s.edgeIPs.GetAddrForRPC()
 	if err != nil {
 		return nil, err
 	}

origin/tunnel.go

@@ -20,6 +20,7 @@ import (
 	log "github.com/sirupsen/logrus"
 	"golang.org/x/sync/errgroup"
 
+	"github.com/cloudflare/cloudflared/buffer"
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/buildinfo"
 	"github.com/cloudflare/cloudflared/connection"
 	"github.com/cloudflare/cloudflared/h2mux"
@@ -38,6 +39,8 @@ const (
 	lbProbeUserAgentPrefix   = "Mozilla/5.0 (compatible; Cloudflare-Traffic-Manager/1.0; +https://www.cloudflare.com/traffic-manager/;"
 	TagHeaderNamePrefix      = "Cf-Warp-Tag-"
 	DuplicateConnectionError = "EDUPCONN"
+	FeatureSerializedHeaders = "serialized_headers"
+	FeatureQuickReconnects   = "quick_reconnects"
 )
 
 type registerRPCName string
@@ -84,6 +87,8 @@ type TunnelConfig struct {
 
 	// feature-flag to use new edge reconnect tokens
 	UseReconnectToken bool
+	// feature-flag for using ConnectionDigest
+	UseQuickReconnects bool
 }
 
 // ReconnectTunnelCredentialManager is invoked by functions in this file to
@@ -92,6 +97,8 @@ type ReconnectTunnelCredentialManager interface {
 	ReconnectToken() ([]byte, error)
 	EventDigest() ([]byte, error)
 	SetEventDigest(eventDigest []byte)
+	ConnDigest(connID uint8) ([]byte, error)
+	SetConnDigest(connID uint8, connDigest []byte)
 }
 
 type dupConnRegisterTunnelError struct{}
@@ -160,15 +167,24 @@ func (c *TunnelConfig) RegistrationOptions(connectionID uint8, OriginLocalIP str
 		RunFromTerminal:      c.RunFromTerminal,
 		CompressionQuality:   c.CompressionQuality,
 		UUID:                 uuid.String(),
+		Features:             c.SupportedFeatures(),
 	}
 }
 
-func StartTunnelDaemon(ctx context.Context, config *TunnelConfig, connectedSignal *signal.Signal, cloudflaredID uuid.UUID) error {
+func (c *TunnelConfig) SupportedFeatures() []string {
+	basic := []string{FeatureSerializedHeaders}
+	if c.UseQuickReconnects {
+		basic = append(basic, FeatureQuickReconnects)
+	}
+	return basic
+}
+
+func StartTunnelDaemon(ctx context.Context, config *TunnelConfig, connectedSignal *signal.Signal, cloudflaredID uuid.UUID, reconnectCh chan ReconnectSignal) error {
 	s, err := NewSupervisor(config, cloudflaredID)
 	if err != nil {
 		return err
 	}
-	return s.Run(ctx, connectedSignal)
+	return s.Run(ctx, connectedSignal, reconnectCh)
 }
 
 func ServeTunnelLoop(ctx context.Context,
@@ -178,6 +194,8 @@ func ServeTunnelLoop(ctx context.Context,
 	connectionID uint8,
 	connectedSignal *signal.Signal,
 	u uuid.UUID,
+	bufferPool *buffer.Pool,
+	reconnectCh chan ReconnectSignal,
 ) error {
 	connectionLogger := config.Logger.WithField("connectionID", connectionID)
 	config.Metrics.incrementHaConnections()
@@ -201,6 +219,8 @@ func ServeTunnelLoop(ctx context.Context,
 			connectedFuse,
 			&backoff,
 			u,
+			bufferPool,
+			reconnectCh,
 		)
 		if recoverable {
 			if duration, ok := backoff.GetBackoffDuration(ctx); ok {
@@ -223,6 +243,8 @@ func ServeTunnel(
 	connectedFuse *h2mux.BooleanFuse,
 	backoff *BackoffHandler,
 	u uuid.UUID,
+	bufferPool *buffer.Pool,
+	reconnectCh chan ReconnectSignal,
 ) (err error, recoverable bool) {
 	// Treat panics as recoverable errors
 	defer func() {
@@ -243,7 +265,7 @@ func ServeTunnel(
 	tags["ha"] = connectionTag
 
 	// Returns error from parsing the origin URL or handshake errors
-	handler, originLocalIP, err := NewTunnelHandler(ctx, config, addr, connectionID)
+	handler, originLocalIP, err := NewTunnelHandler(ctx, config, addr, connectionID, bufferPool)
 	if err != nil {
 		errLog := logger.WithError(err)
 		switch err.(type) {
@@ -273,7 +295,15 @@ func ServeTunnel(
 			eventDigest, eventDigestErr := credentialManager.EventDigest()
 			// if we have both credentials, we can reconnect
 			if tokenErr == nil && eventDigestErr == nil {
-				return ReconnectTunnel(serveCtx, token, eventDigest, handler.muxer, config, logger, connectionID, originLocalIP, u)
+				var connDigest []byte
+
+				// check if we can use Quick Reconnects
+				if config.UseQuickReconnects {
+					if digest, connDigestErr := credentialManager.ConnDigest(connectionID); connDigestErr == nil {
+						connDigest = digest
+					}
+				}
+				return ReconnectTunnel(serveCtx, token, eventDigest, connDigest, handler.muxer, config, logger, connectionID, originLocalIP, u, credentialManager)
 			}
 			// log errors and proceed to RegisterTunnel
 			if tokenErr != nil {
@@ -292,7 +322,10 @@ func ServeTunnel(
 			select {
 			case <-serveCtx.Done():
 				// UnregisterTunnel blocks until the RPC call returns
-				err := UnregisterTunnel(handler.muxer, config.GracePeriod, config.TransportLogger)
+				var err error
+				if connectedFuse.Value() {
+					err = UnregisterTunnel(handler.muxer, config.GracePeriod, config.TransportLogger)
+				}
 				handler.muxer.Shutdown()
 				return err
 			case <-updateMetricsTickC:
@@ -301,6 +334,17 @@ func ServeTunnel(
 		}
 	})
 
+	errGroup.Go(func() error {
+		for {
+			select {
+			case reconnect := <-reconnectCh:
+				return &reconnect
+			case <-serveCtx.Done():
+				return nil
+			}
+		}
+	})
+
 	errGroup.Go(func() error {
 		// All routines should stop when muxer finish serving. When muxer is shutdown
 		// gracefully, it doesn't return an error, so we need to return errMuxerShutdown
@@ -332,7 +376,11 @@ func ServeTunnel(
 			logger.WithError(castedErr.cause).Error("Register tunnel error on client side")
 			return err, true
 		case muxerShutdownError:
-			logger.Infof("Muxer shutdown")
+			logger.Info("Muxer shutdown")
+			return err, true
+		case *ReconnectSignal:
+			logger.Warnf("Restarting due to reconnect signal in %d seconds", castedErr.Delay)
+			castedErr.DelayBeforeReconnect()
 			return err, true
 		default:
 			logger.WithError(err).Error("Serve tunnel error")
@@ -375,19 +423,20 @@ func RegisterTunnel(
 		return processRegisterTunnelError(registrationErr, config.Metrics, register)
 	}
 	credentialManager.SetEventDigest(registration.EventDigest)
-	return processRegistrationSuccess(config, logger, connectionID, registration, register)
+	return processRegistrationSuccess(config, logger, connectionID, registration, register, credentialManager)
 }
 
 func ReconnectTunnel(
 	ctx context.Context,
 	token []byte,
-	eventDigest []byte,
+	eventDigest, connDigest []byte,
 	muxer *h2mux.Muxer,
 	config *TunnelConfig,
 	logger *log.Entry,
 	connectionID uint8,
 	originLocalIP string,
 	uuid uuid.UUID,
+	credentialManager ReconnectTunnelCredentialManager,
 ) error {
 	config.TransportLogger.Debug("initiating RPC stream to reconnect")
 	tunnelServer, err := connection.NewRPCClient(ctx, muxer, config.TransportLogger.WithField("subsystem", "rpc-reconnect"), openStreamTimeout)
@@ -405,6 +454,7 @@ func ReconnectTunnel(
 		ctx,
 		token,
 		eventDigest,
+		connDigest,
 		config.Hostname,
 		config.RegistrationOptions(connectionID, originLocalIP, uuid),
 	)
@@ -412,10 +462,17 @@ func ReconnectTunnel(
 		// ReconnectTunnel RPC failure
 		return processRegisterTunnelError(registrationErr, config.Metrics, reconnect)
 	}
-	return processRegistrationSuccess(config, logger, connectionID, registration, reconnect)
+	return processRegistrationSuccess(config, logger, connectionID, registration, reconnect, credentialManager)
 }
 
-func processRegistrationSuccess(config *TunnelConfig, logger *log.Entry, connectionID uint8, registration *tunnelpogs.TunnelRegistration, name registerRPCName) error {
+func processRegistrationSuccess(
+	config *TunnelConfig,
+	logger *log.Entry,
+	connectionID uint8,
+	registration *tunnelpogs.TunnelRegistration,
+	name registerRPCName,
+	credentialManager ReconnectTunnelCredentialManager,
+) error {
 	for _, logLine := range registration.LogLines {
 		logger.Info(logLine)
 	}
@@ -437,6 +494,7 @@ func processRegistrationSuccess(config *TunnelConfig, logger *log.Entry, connect
 		}
 	}
 
+	credentialManager.SetConnDigest(connectionID, registration.ConnDigest)
 	config.Metrics.userHostnamesCounts.WithLabelValues(registration.Url).Inc()
 
 	logger.Infof("Route propagating, it may take up to 1 minute for your new route to become functional")
@@ -464,6 +522,8 @@ func UnregisterTunnel(muxer *h2mux.Muxer, gracePeriod time.Duration, logger *log
 		// RPC stream open error
 		return err
 	}
+	defer tunnelServer.Close()
+
 	// gracePeriod is encoded in int64 using capnproto
 	return tunnelServer.UnregisterTunnel(ctx, gracePeriod.Nanoseconds())
 }
@@ -488,16 +548,6 @@ func LogServerInfo(
 	metrics.registerServerLocation(uint8ToString(connectionID), serverInfo.LocationName)
 }
 
-func H1ResponseToH2Response(h1 *http.Response) (h2 []h2mux.Header) {
-	h2 = []h2mux.Header{{Name: ":status", Value: fmt.Sprintf("%d", h1.StatusCode)}}
-	for headerName, headerValues := range h1.Header {
-		for _, headerValue := range headerValues {
-			h2 = append(h2, h2mux.Header{Name: strings.ToLower(headerName), Value: headerValue})
-		}
-	}
-	return
-}
-
 type TunnelHandler struct {
 	originUrl      string
 	httpHostHeader string
@@ -510,15 +560,16 @@ type TunnelHandler struct {
 	connectionID      string
 	logger            *log.Logger
 	noChunkedEncoding bool
-}
 
-var dialer = net.Dialer{}
+	bufferPool *buffer.Pool
+}
 
 // NewTunnelHandler returns a TunnelHandler, origin LAN IP and error
 func NewTunnelHandler(ctx context.Context,
 	config *TunnelConfig,
 	addr *net.TCPAddr,
 	connectionID uint8,
+	bufferPool *buffer.Pool,
 ) (*TunnelHandler, string, error) {
 	originURL, err := validation.ValidateUrl(config.OriginUrl)
 	if err != nil {
@@ -534,6 +585,7 @@ func NewTunnelHandler(ctx context.Context,
 		connectionID:      uint8ToString(connectionID),
 		logger:            config.Logger,
 		noChunkedEncoding: config.NoChunkedEncoding,
+		bufferPool:        bufferPool,
 	}
 	if h.httpClient == nil {
 		h.httpClient = http.DefaultTransport
@@ -564,7 +616,7 @@ func (h *TunnelHandler) ServeStream(stream *h2mux.MuxedStream) error {
 
 	req, reqErr := h.createRequest(stream)
 	if reqErr != nil {
-		h.logError(stream, reqErr)
+		h.writeErrorResponse(stream, reqErr)
 		return reqErr
 	}
 
@@ -580,7 +632,7 @@ func (h *TunnelHandler) ServeStream(stream *h2mux.MuxedStream) error {
 		resp, respErr = h.serveHTTP(stream, req)
 	}
 	if respErr != nil {
-		h.logError(stream, respErr)
+		h.writeErrorResponse(stream, respErr)
 		return respErr
 	}
 	h.logResponseOk(resp, cfRay, lbProbe)
@@ -592,7 +644,7 @@ func (h *TunnelHandler) createRequest(stream *h2mux.MuxedStream) (*http.Request,
 	if err != nil {
 		return nil, errors.Wrap(err, "Unexpected error from http.NewRequest")
 	}
-	err = streamhandler.H2RequestHeadersToH1Request(stream.Headers, req)
+	err = h2mux.H2RequestHeadersToH1Request(stream.Headers, req)
 	if err != nil {
 		return nil, errors.Wrap(err, "invalid request received")
 	}
@@ -611,13 +663,14 @@ func (h *TunnelHandler) serveWebsocket(stream *h2mux.MuxedStream, req *http.Requ
 		return nil, err
 	}
 	defer conn.Close()
-	err = stream.WriteHeaders(H1ResponseToH2Response(response))
+	err = stream.WriteHeaders(h2mux.H1ResponseToH2ResponseHeaders(response))
 	if err != nil {
 		return nil, errors.Wrap(err, "Error writing response header")
 	}
 	// Copy to/from stream to the undelying connection. Use the underlying
 	// connection because cloudflared doesn't operate on the message themselves
 	websocket.Stream(conn.UnderlyingConn(), stream)
+
 	return response, nil
 }
 
@@ -645,7 +698,9 @@ func (h *TunnelHandler) serveHTTP(stream *h2mux.MuxedStream, req *http.Request)
 	}
 	defer response.Body.Close()
 
-	err = stream.WriteHeaders(H1ResponseToH2Response(response))
+	headers := h2mux.H1ResponseToH2ResponseHeaders(response)
+	headers = append(headers, h2mux.CreateResponseMetaHeader(h2mux.ResponseMetaHeaderField, h2mux.ResponseSourceOrigin))
+	err = stream.WriteHeaders(headers)
 	if err != nil {
 		return nil, errors.Wrap(err, "Error writing response header")
 	}
@@ -654,7 +709,9 @@ func (h *TunnelHandler) serveHTTP(stream *h2mux.MuxedStream, req *http.Request)
 	} else {
 		// Use CopyBuffer, because Copy only allocates a 32KiB buffer, and cross-stream
 		// compression generates dictionary on first write
-		io.CopyBuffer(stream, response.Body, make([]byte, 512*1024))
+		buf := h.bufferPool.Get()
+		defer h.bufferPool.Put(buf)
+		io.CopyBuffer(stream, response.Body, buf)
 	}
 	return response, nil
 }
@@ -678,9 +735,12 @@ func (h *TunnelHandler) isEventStream(response *http.Response) bool {
 	return false
 }
 
-func (h *TunnelHandler) logError(stream *h2mux.MuxedStream, err error) {
+func (h *TunnelHandler) writeErrorResponse(stream *h2mux.MuxedStream, err error) {
 	h.logger.WithError(err).Error("HTTP request error")
-	stream.WriteHeaders([]h2mux.Header{{Name: ":status", Value: "502"}})
+	stream.WriteHeaders([]h2mux.Header{
+		{Name: ":status", Value: "502"},
+		h2mux.CreateResponseMetaHeader(h2mux.ResponseMetaHeaderField, h2mux.ResponseSourceCloudflared),
+	})
 	stream.Write([]byte("502 Bad Gateway"))
 	h.metrics.incrementResponses(h.connectionID, "502")
 }

originservice/originservice.go

@@ -12,11 +12,11 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/cloudflare/cloudflared/buffer"
 	"github.com/cloudflare/cloudflared/h2mux"
 	"github.com/cloudflare/cloudflared/hello"
 	"github.com/cloudflare/cloudflared/log"
 	"github.com/cloudflare/cloudflared/websocket"
-
 	"github.com/pkg/errors"
 )
 
@@ -33,6 +33,7 @@ type HTTPService struct {
 	client          http.RoundTripper
 	originURL       *url.URL
 	chunkedEncoding bool
+	bufferPool      *buffer.Pool
 }
 
 func NewHTTPService(transport http.RoundTripper, url *url.URL, chunkedEncoding bool) OriginService {
@@ -40,10 +41,13 @@ func NewHTTPService(transport http.RoundTripper, url *url.URL, chunkedEncoding b
 		client:          transport,
 		originURL:       url,
 		chunkedEncoding: chunkedEncoding,
+		bufferPool:      buffer.NewPool(512 * 1024),
 	}
 }
 
 func (hc *HTTPService) Proxy(stream *h2mux.MuxedStream, req *http.Request) (*http.Response, error) {
+	const responseSourceOrigin = "origin"
+
 	// Support for WSGI Servers by switching transfer encoding from chunked to gzip/deflate
 	if !hc.chunkedEncoding {
 		req.TransferEncoding = []string{"gzip", "deflate"}
@@ -62,7 +66,9 @@ func (hc *HTTPService) Proxy(stream *h2mux.MuxedStream, req *http.Request) (*htt
 	}
 	defer resp.Body.Close()
 
-	err = stream.WriteHeaders(h1ResponseToH2Response(resp))
+	responseHeaders := h1ResponseToH2Response(resp)
+	responseHeaders = append(responseHeaders, h2mux.CreateResponseMetaHeader(h2mux.ResponseMetaHeaderField, responseSourceOrigin))
+	err = stream.WriteHeaders(responseHeaders)
 	if err != nil {
 		return nil, errors.Wrap(err, "error writing response header to HTTP origin")
 	}
@@ -71,7 +77,9 @@ func (hc *HTTPService) Proxy(stream *h2mux.MuxedStream, req *http.Request) (*htt
 	} else {
 		// Use CopyBuffer, because Copy only allocates a 32KiB buffer, and cross-stream
 		// compression generates dictionary on first write
-		io.CopyBuffer(stream, resp.Body, make([]byte, 512*1024))
+		buf := hc.bufferPool.Get()
+		defer hc.bufferPool.Put(buf)
+		io.CopyBuffer(stream, resp.Body, buf)
 	}
 	return resp, nil
 }
@@ -100,7 +108,7 @@ func NewWebSocketService(tlsConfig *tls.Config, url *url.URL) (OriginService, er
 	}
 	shutdownC := make(chan struct{})
 	go func() {
-		websocket.StartProxyServer(log.CreateLogger(), listener, url.String(), shutdownC)
+		websocket.StartProxyServer(log.CreateLogger(), listener, url.String(), shutdownC, websocket.DefaultStreamHandler)
 	}()
 	return &WebsocketService{
 		tlsConfig: tlsConfig,
@@ -142,10 +150,11 @@ func (wsc *WebsocketService) Shutdown() {
 
 // HelloWorldService talks to the hello world example origin
 type HelloWorldService struct {
-	client    http.RoundTripper
-	listener  net.Listener
-	originURL *url.URL
-	shutdownC chan struct{}
+	client     http.RoundTripper
+	listener   net.Listener
+	originURL  *url.URL
+	shutdownC  chan struct{}
+	bufferPool *buffer.Pool
 }
 
 func NewHelloWorldService(transport http.RoundTripper) (OriginService, error) {
@@ -164,7 +173,8 @@ func NewHelloWorldService(transport http.RoundTripper) (OriginService, error) {
 			Scheme: "https",
 			Host:   listener.Addr().String(),
 		},
-		shutdownC: shutdownC,
+		shutdownC:  shutdownC,
+		bufferPool: buffer.NewPool(512 * 1024),
 	}, nil
 }
 
@@ -184,7 +194,9 @@ func (hwc *HelloWorldService) Proxy(stream *h2mux.MuxedStream, req *http.Request
 
 	// Use CopyBuffer, because Copy only allocates a 32KiB buffer, and cross-stream
 	// compression generates dictionary on first write
-	io.CopyBuffer(stream, resp.Body, make([]byte, 512*1024))
+	buf := hwc.bufferPool.Get()
+	defer hwc.bufferPool.Put(buf)
+	io.CopyBuffer(stream, resp.Body, buf)
 
 	return resp, nil
 }

socks/auth_handler.go

@@ -0,0 +1,77 @@
+package socks
+
+import (
+	"fmt"
+	"io"
+)
+
+const (
+	// NoAuth means no authentication is used when connecting
+	NoAuth = uint8(0)
+
+	// UserPassAuth means a user/password is used when connecting
+	UserPassAuth = uint8(2)
+
+	noAcceptable    = uint8(255)
+	userAuthVersion = uint8(1)
+	authSuccess     = uint8(0)
+	authFailure     = uint8(1)
+)
+
+// AuthHandler handles socks authenication requests
+type AuthHandler interface {
+	Handle(io.Reader, io.Writer) error
+	Register(uint8, Authenticator)
+}
+
+// StandardAuthHandler loads the default authenticators
+type StandardAuthHandler struct {
+	authenticators map[uint8]Authenticator
+}
+
+// NewAuthHandler creates a default auth handler
+func NewAuthHandler() AuthHandler {
+	defaults := make(map[uint8]Authenticator)
+	defaults[NoAuth] = NewNoAuthAuthenticator()
+	return &StandardAuthHandler{
+		authenticators: defaults,
+	}
+}
+
+// Register adds/replaces an Authenticator to use when handling Authentication requests
+func (h *StandardAuthHandler) Register(method uint8, a Authenticator) {
+	h.authenticators[method] = a
+}
+
+// Handle gets the methods from the SOCKS5 client and authenicates with the first supported method
+func (h *StandardAuthHandler) Handle(bufConn io.Reader, conn io.Writer) error {
+	methods, err := readMethods(bufConn)
+	if err != nil {
+		return fmt.Errorf("Failed to read auth methods: %v", err)
+	}
+
+	// first supported method is used
+	for _, method := range methods {
+		authenticator := h.authenticators[method]
+		if authenticator != nil {
+			return authenticator.Handle(bufConn, conn)
+		}
+	}
+
+	// failed to authenticate. No supported authentication type found
+	conn.Write([]byte{socks5Version, noAcceptable})
+	return fmt.Errorf("unknown authentication type")
+}
+
+// readMethods is used to read the number and type of methods
+func readMethods(r io.Reader) ([]byte, error) {
+	header := []byte{0}
+	if _, err := r.Read(header); err != nil {
+		return nil, err
+	}
+
+	numMethods := int(header[0])
+	methods := make([]byte, numMethods)
+	_, err := io.ReadAtLeast(r, methods, numMethods)
+	return methods, err
+}

socks/authenticator.go

@@ -0,0 +1,87 @@
+package socks
+
+import (
+	"fmt"
+	"io"
+)
+
+// Authenticator is the connection passed in as a reader/writer to support different authentication types
+type Authenticator interface {
+	Handle(io.Reader, io.Writer) error
+}
+
+// NoAuthAuthenticator is used to handle the No Authentication mode
+type NoAuthAuthenticator struct{}
+
+// NewNoAuthAuthenticator creates a authless Authenticator
+func NewNoAuthAuthenticator() Authenticator {
+	return &NoAuthAuthenticator{}
+}
+
+// Handle writes back the version and NoAuth
+func (a *NoAuthAuthenticator) Handle(reader io.Reader, writer io.Writer) error {
+	_, err := writer.Write([]byte{socks5Version, NoAuth})
+	return err
+}
+
+// UserPassAuthAuthenticator is used to handle the user/password mode
+type UserPassAuthAuthenticator struct {
+	IsValid func(string, string) bool
+}
+
+// NewUserPassAuthAuthenticator creates a new username/password validator Authenticator
+func NewUserPassAuthAuthenticator(isValid func(string, string) bool) Authenticator {
+	return &UserPassAuthAuthenticator{
+		IsValid: isValid,
+	}
+}
+
+// Handle writes back the version and NoAuth
+func (a *UserPassAuthAuthenticator) Handle(reader io.Reader, writer io.Writer) error {
+	if _, err := writer.Write([]byte{socks5Version, UserPassAuth}); err != nil {
+		return err
+	}
+
+	// Get the version and username length
+	header := []byte{0, 0}
+	if _, err := io.ReadAtLeast(reader, header, 2); err != nil {
+		return err
+	}
+
+	// Ensure compatibility. Someone call E-harmony
+	if header[0] != userAuthVersion {
+		return fmt.Errorf("Unsupported auth version: %v", header[0])
+	}
+
+	// Get the user name
+	userLen := int(header[1])
+	user := make([]byte, userLen)
+	if _, err := io.ReadAtLeast(reader, user, userLen); err != nil {
+		return err
+	}
+
+	// Get the password length
+	if _, err := reader.Read(header[:1]); err != nil {
+		return err
+	}
+
+	// Get the password
+	passLen := int(header[0])
+	pass := make([]byte, passLen)
+	if _, err := io.ReadAtLeast(reader, pass, passLen); err != nil {
+		return err
+	}
+
+	// Verify the password
+	if a.IsValid(string(user), string(pass)) {
+		_, err := writer.Write([]byte{userAuthVersion, authSuccess})
+		return err
+	}
+
+	// password failed. Write back failure
+	if _, err := writer.Write([]byte{userAuthVersion, authFailure}); err != nil {
+		return err
+	}
+
+	return fmt.Errorf("User authentication failed")
+}

socks/connection_handler.go

@@ -0,0 +1,57 @@
+package socks
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+)
+
+// ConnectionHandler is the Serve method to handle connections
+// from a local TCP listener of the standard library (net.Listener)
+type ConnectionHandler interface {
+	Serve(io.ReadWriter) error
+}
+
+// StandardConnectionHandler is the base implementation of handling SOCKS5 requests
+type StandardConnectionHandler struct {
+	requestHandler RequestHandler
+	authHandler    AuthHandler
+}
+
+// NewConnectionHandler creates a standard SOCKS5 connection handler
+// This process connections from a generic TCP listener from the standard library
+func NewConnectionHandler(requestHandler RequestHandler) ConnectionHandler {
+	return &StandardConnectionHandler{
+		requestHandler: requestHandler,
+		authHandler:    NewAuthHandler(),
+	}
+}
+
+// Serve process new connection created after calling `Accept()` in the standard library
+func (h *StandardConnectionHandler) Serve(c io.ReadWriter) error {
+	bufConn := bufio.NewReader(c)
+
+	// read the version byte
+	version := []byte{0}
+	if _, err := bufConn.Read(version); err != nil {
+		return err
+	}
+
+	// ensure compatibility
+	if version[0] != socks5Version {
+		return fmt.Errorf("Unsupported SOCKS version: %v", version)
+	}
+
+	// handle auth
+	if err := h.authHandler.Handle(bufConn, c); err != nil {
+		return err
+	}
+
+	// process command/request
+	req, err := NewRequest(bufConn)
+	if err != nil {
+		return err
+	}
+
+	return h.requestHandler.Handle(req, c)
+}

socks/connection_handler_test.go

@@ -0,0 +1,88 @@
+package socks
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"golang.org/x/net/proxy"
+)
+
+type successResponse struct {
+	Status string `json:"status"`
+}
+
+func sendSocksRequest(t *testing.T) []byte {
+	dialer, err := proxy.SOCKS5("tcp", "127.0.0.1:8086", nil, proxy.Direct)
+	assert.NoError(t, err)
+
+	httpTransport := &http.Transport{}
+	httpClient := &http.Client{Transport: httpTransport}
+	// set our socks5 as the dialer
+	httpTransport.Dial = dialer.Dial
+
+	req, err := http.NewRequest("GET", "http://127.0.0.1:8085", nil)
+	assert.NoError(t, err)
+
+	resp, err := httpClient.Do(req)
+	assert.NoError(t, err)
+	defer resp.Body.Close()
+
+	b, err := ioutil.ReadAll(resp.Body)
+	assert.NoError(t, err)
+
+	return b
+}
+
+func startTestServer(t *testing.T, httpHandler func(w http.ResponseWriter, r *http.Request)) {
+	// create a socks server
+	requestHandler := NewRequestHandler(NewNetDialer())
+	socksServer := NewConnectionHandler(requestHandler)
+	listener, err := net.Listen("tcp", ":8086")
+	assert.NoError(t, err)
+
+	go func() {
+		defer listener.Close()
+		for {
+			conn, _ := listener.Accept()
+			go socksServer.Serve(conn)
+		}
+	}()
+
+	// create an http server
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", httpHandler)
+
+	// start the servers
+	go http.ListenAndServe(":8085", mux)
+
+}
+
+func respondWithJSON(w http.ResponseWriter, v interface{}, status int) {
+	data, _ := json.Marshal(v)
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	w.Write(data)
+}
+
+func OkJSONResponseHandler(w http.ResponseWriter, r *http.Request) {
+	resp := successResponse{
+		Status: "ok",
+	}
+	respondWithJSON(w, resp, http.StatusOK)
+}
+
+func TestSocksConnection(t *testing.T) {
+	startTestServer(t, OkJSONResponseHandler)
+	b := sendSocksRequest(t)
+	assert.True(t, len(b) > 0, "no data returned!")
+
+	var resp successResponse
+	json.Unmarshal(b, &resp)
+
+	assert.True(t, resp.Status == "ok", "response didn't return ok")
+}

socks/dialer.go

@@ -0,0 +1,57 @@
+package socks
+
+import (
+	"fmt"
+	"io"
+	"net"
+)
+
+// Dialer is used to provided the transport of the proxy
+type Dialer interface {
+	Dial(string) (io.ReadWriteCloser, *AddrSpec, error)
+}
+
+// NetDialer is a standard TCP dialer
+type NetDialer struct {
+}
+
+// NewNetDialer creates a new dialer
+func NewNetDialer() Dialer {
+	return &NetDialer{}
+}
+
+// Dial is a base TCP dialer
+func (d *NetDialer) Dial(address string) (io.ReadWriteCloser, *AddrSpec, error) {
+	c, err := net.Dial("tcp", address)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	local := c.LocalAddr().(*net.TCPAddr)
+	addr := AddrSpec{IP: local.IP, Port: local.Port}
+
+	return c, &addr, nil
+}
+
+// ConnDialer is like NetDialer but with an existing TCP dialer already created
+type ConnDialer struct {
+	conn net.Conn
+}
+
+// NewConnDialer creates a new dialer with a already created net.conn (TCP expected)
+func NewConnDialer(conn net.Conn) Dialer {
+	return &ConnDialer{
+		conn: conn,
+	}
+}
+
+// Dial is a TCP dialer but already created
+func (d *ConnDialer) Dial(address string) (io.ReadWriteCloser, *AddrSpec, error) {
+	local, ok := d.conn.LocalAddr().(*net.TCPAddr)
+	if !ok {
+		return nil, nil, fmt.Errorf("not a tcp connection")
+	}
+
+	addr := AddrSpec{IP: local.IP, Port: local.Port}
+	return d.conn, &addr, nil
+}

socks/request.go

@@ -0,0 +1,195 @@
+package socks
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+)
+
+const (
+	// version
+	socks5Version = uint8(5)
+
+	// commands https://tools.ietf.org/html/rfc1928#section-4
+	connectCommand   = uint8(1)
+	bindCommand      = uint8(2)
+	associateCommand = uint8(3)
+
+	// address types
+	ipv4Address = uint8(1)
+	fqdnAddress = uint8(3)
+	ipv6Address = uint8(4)
+)
+
+// https://tools.ietf.org/html/rfc1928#section-6
+const (
+	successReply uint8 = iota
+	serverFailure
+	ruleFailure
+	networkUnreachable
+	hostUnreachable
+	connectionRefused
+	ttlExpired
+	commandNotSupported
+	addrTypeNotSupported
+)
+
+// AddrSpec is used to return the target IPv4, IPv6, or a FQDN
+type AddrSpec struct {
+	FQDN string
+	IP   net.IP
+	Port int
+}
+
+// String gives a host version of the Address
+func (a *AddrSpec) String() string {
+	if a.FQDN != "" {
+		return fmt.Sprintf("%s (%s):%d", a.FQDN, a.IP, a.Port)
+	}
+	return fmt.Sprintf("%s:%d", a.IP, a.Port)
+}
+
+// Address returns a string suitable to dial; prefer returning IP-based
+// address, fallback to FQDN
+func (a AddrSpec) Address() string {
+	if len(a.IP) != 0 {
+		return net.JoinHostPort(a.IP.String(), strconv.Itoa(a.Port))
+	}
+	return net.JoinHostPort(a.FQDN, strconv.Itoa(a.Port))
+}
+
+// Request is a SOCKS5 command with supporting field of the connection
+type Request struct {
+	// Protocol version
+	Version uint8
+	// Requested command
+	Command uint8
+	// AddrSpec of the destination
+	DestAddr *AddrSpec
+	// reading from the connection
+	bufConn io.Reader
+}
+
+// NewRequest creates a new request from the connection data stream
+func NewRequest(bufConn io.Reader) (*Request, error) {
+	// Read the version byte
+	header := []byte{0, 0, 0}
+	if _, err := io.ReadAtLeast(bufConn, header, 3); err != nil {
+		return nil, fmt.Errorf("Failed to get command version: %v", err)
+	}
+
+	// ensure compatibility
+	if header[0] != socks5Version {
+		return nil, fmt.Errorf("Unsupported command version: %v", header[0])
+	}
+
+	// Read in the destination address
+	dest, err := readAddrSpec(bufConn)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Request{
+		Version:  socks5Version,
+		Command:  header[1],
+		DestAddr: dest,
+		bufConn:  bufConn,
+	}, nil
+}
+
+func sendReply(w io.Writer, resp uint8, addr *AddrSpec) error {
+	var addrType uint8
+	var addrBody []byte
+	var addrPort uint16
+	switch {
+	case addr == nil:
+		addrType = ipv4Address
+		addrBody = []byte{0, 0, 0, 0}
+		addrPort = 0
+
+	case addr.FQDN != "":
+		addrType = fqdnAddress
+		addrBody = append([]byte{byte(len(addr.FQDN))}, addr.FQDN...)
+		addrPort = uint16(addr.Port)
+
+	case addr.IP.To4() != nil:
+		addrType = ipv4Address
+		addrBody = []byte(addr.IP.To4())
+		addrPort = uint16(addr.Port)
+
+	case addr.IP.To16() != nil:
+		addrType = ipv6Address
+		addrBody = []byte(addr.IP.To16())
+		addrPort = uint16(addr.Port)
+
+	default:
+		return fmt.Errorf("Failed to format address: %v", addr)
+	}
+
+	// Format the message
+	msg := make([]byte, 6+len(addrBody))
+	msg[0] = socks5Version
+	msg[1] = resp
+	msg[2] = 0 // Reserved
+	msg[3] = addrType
+	copy(msg[4:], addrBody)
+	msg[4+len(addrBody)] = byte(addrPort >> 8)
+	msg[4+len(addrBody)+1] = byte(addrPort & 0xff)
+
+	// Send the message
+	_, err := w.Write(msg)
+	return err
+}
+
+// readAddrSpec is used to read AddrSpec.
+// Expects an address type byte, followed by the address and port
+func readAddrSpec(r io.Reader) (*AddrSpec, error) {
+	d := &AddrSpec{}
+
+	// Get the address type
+	addrType := []byte{0}
+	if _, err := r.Read(addrType); err != nil {
+		return nil, err
+	}
+
+	// Handle on a per type basis
+	switch addrType[0] {
+	case ipv4Address:
+		addr := make([]byte, 4)
+		if _, err := io.ReadAtLeast(r, addr, len(addr)); err != nil {
+			return nil, err
+		}
+		d.IP = net.IP(addr)
+
+	case ipv6Address:
+		addr := make([]byte, 16)
+		if _, err := io.ReadAtLeast(r, addr, len(addr)); err != nil {
+			return nil, err
+		}
+		d.IP = net.IP(addr)
+
+	case fqdnAddress:
+		if _, err := r.Read(addrType); err != nil {
+			return nil, err
+		}
+		addrLen := int(addrType[0])
+		fqdn := make([]byte, addrLen)
+		if _, err := io.ReadAtLeast(r, fqdn, addrLen); err != nil {
+			return nil, err
+		}
+		d.FQDN = string(fqdn)
+
+	default:
+		return nil, fmt.Errorf("Unrecognized address type")
+	}
+
+	// Read the port
+	port := []byte{0, 0}
+	if _, err := io.ReadAtLeast(r, port, 2); err != nil {
+		return nil, err
+	}
+	d.Port = (int(port[0]) << 8) | int(port[1])
+
+	return d, nil
+}

socks/request_handler.go

@@ -0,0 +1,106 @@
+package socks
+
+import (
+	"fmt"
+	"io"
+	"strings"
+)
+
+// RequestHandler is the functions needed to handle a SOCKS5 command
+type RequestHandler interface {
+	Handle(*Request, io.ReadWriter) error
+}
+
+// StandardRequestHandler implements the base socks5 command processing
+type StandardRequestHandler struct {
+	dialer Dialer
+}
+
+// NewRequestHandler creates a standard SOCKS5 request handler
+// This handles the SOCKS5 commands and proxies them to their destination
+func NewRequestHandler(dialer Dialer) RequestHandler {
+	return &StandardRequestHandler{
+		dialer: dialer,
+	}
+}
+
+// Handle processes and responds to socks5 commands
+func (h *StandardRequestHandler) Handle(req *Request, conn io.ReadWriter) error {
+	switch req.Command {
+	case connectCommand:
+		return h.handleConnect(conn, req)
+	case bindCommand:
+		return h.handleBind(conn, req)
+	case associateCommand:
+		return h.handleAssociate(conn, req)
+	default:
+		if err := sendReply(conn, commandNotSupported, nil); err != nil {
+			return fmt.Errorf("Failed to send reply: %v", err)
+		}
+		return fmt.Errorf("Unsupported command: %v", req.Command)
+	}
+}
+
+// handleConnect is used to handle a connect command
+func (h *StandardRequestHandler) handleConnect(conn io.ReadWriter, req *Request) error {
+	target, localAddr, err := h.dialer.Dial(req.DestAddr.Address())
+	if err != nil {
+		msg := err.Error()
+		resp := hostUnreachable
+		if strings.Contains(msg, "refused") {
+			resp = connectionRefused
+		} else if strings.Contains(msg, "network is unreachable") {
+			resp = networkUnreachable
+		}
+		if err := sendReply(conn, resp, nil); err != nil {
+			return fmt.Errorf("Failed to send reply: %v", err)
+		}
+		return fmt.Errorf("Connect to %v failed: %v", req.DestAddr, err)
+	}
+	defer target.Close()
+
+	// Send success
+	if err := sendReply(conn, successReply, localAddr); err != nil {
+		return fmt.Errorf("Failed to send reply: %v", err)
+	}
+
+	// Start proxying
+	proxyDone := make(chan error, 2)
+
+	go func() {
+		_, e := io.Copy(target, req.bufConn)
+		proxyDone <- e
+	}()
+
+	go func() {
+		_, e := io.Copy(conn, target)
+		proxyDone <- e
+	}()
+
+	// Wait for both
+	for i := 0; i < 2; i++ {
+		e := <-proxyDone
+		if e != nil {
+			return e
+		}
+	}
+	return nil
+}
+
+// handleBind is used to handle a bind command
+// TODO: Support bind command
+func (h *StandardRequestHandler) handleBind(conn io.ReadWriter, req *Request) error {
+	if err := sendReply(conn, commandNotSupported, nil); err != nil {
+		return fmt.Errorf("Failed to send reply: %v", err)
+	}
+	return nil
+}
+
+// handleAssociate is used to handle a connect command
+// TODO: Support associate command
+func (h *StandardRequestHandler) handleAssociate(conn io.ReadWriter, req *Request) error {
+	if err := sendReply(conn, commandNotSupported, nil); err != nil {
+		return fmt.Errorf("Failed to send reply: %v", err)
+	}
+	return nil
+}

socks/request_handler_test.go

@@ -0,0 +1,28 @@
+package socks
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnsupportedBind(t *testing.T) {
+	req := createRequest(t, socks5Version, bindCommand, "2001:db8::68", 1337, false)
+	var b bytes.Buffer
+
+	requestHandler := NewRequestHandler(NewNetDialer())
+	err := requestHandler.Handle(req, &b)
+	assert.NoError(t, err)
+	assert.True(t, b.Bytes()[1] == commandNotSupported, "expected a response")
+}
+
+func TestUnsupportedAssociate(t *testing.T) {
+	req := createRequest(t, socks5Version, associateCommand, "127.0.0.1", 1337, false)
+	var b bytes.Buffer
+
+	requestHandler := NewRequestHandler(NewNetDialer())
+	err := requestHandler.Handle(req, &b)
+	assert.NoError(t, err)
+	assert.True(t, b.Bytes()[1] == commandNotSupported, "expected a response")
+}

socks/request_test.go

@@ -0,0 +1,69 @@
+package socks
+
+import (
+	"bytes"
+	"encoding/binary"
+	"net"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func createRequestData(version, command uint8, ip net.IP, port uint16) []byte {
+	// set the command
+	b := []byte{version, command, 0}
+
+	// append the ip
+	if len(ip) == net.IPv4len {
+		b = append(b, 1)
+		b = append(b, ip.To4()...)
+	} else {
+		b = append(b, 4)
+		b = append(b, ip.To16()...)
+	}
+
+	// append the port
+	p := []byte{0, 0}
+	binary.BigEndian.PutUint16(p, port)
+	b = append(b, p...)
+
+	return b
+}
+
+func createRequest(t *testing.T, version, command uint8, ipStr string, port uint16, shouldFail bool) *Request {
+	ip := net.ParseIP(ipStr)
+	data := createRequestData(version, command, ip, port)
+	reader := bytes.NewReader(data)
+	req, err := NewRequest(reader)
+	if shouldFail {
+		assert.Error(t, err)
+		return nil
+	}
+	assert.NoError(t, err)
+	assert.True(t, req.Version == socks5Version, "version doesn't match expectation: %v", req.Version)
+	assert.True(t, req.Command == command, "command doesn't match expectation: %v", req.Command)
+	assert.True(t, req.DestAddr.Port == int(port), "port doesn't match expectation: %v", req.DestAddr.Port)
+	assert.True(t, req.DestAddr.IP.String() == ipStr, "ip doesn't match expectation: %v", req.DestAddr.IP.String())
+
+	return req
+}
+
+func TestValidConnectRequest(t *testing.T) {
+	createRequest(t, socks5Version, connectCommand, "127.0.0.1", 1337, false)
+}
+
+func TestValidBindRequest(t *testing.T) {
+	createRequest(t, socks5Version, bindCommand, "2001:db8::68", 1337, false)
+}
+
+func TestValidAssociateRequest(t *testing.T) {
+	createRequest(t, socks5Version, associateCommand, "127.0.0.1", 1234, false)
+}
+
+func TestInValidVersionRequest(t *testing.T) {
+	createRequest(t, 4, connectCommand, "127.0.0.1", 1337, true)
+}
+
+func TestInValidIPRequest(t *testing.T) {
+	createRequest(t, 4, connectCommand, "127.0.01", 1337, true)
+}

sshlog/logger_test.go

@@ -32,7 +32,7 @@ func createLogger(t *testing.T) *Logger {
 //	}()
 //
 //	logger.Write([]byte(testStr))
-//	time.Sleep(2 * time.Millisecond)
+//	time.DelayBeforeReconnect(2 * time.Millisecond)
 //	data, err := ioutil.ReadFile(logFileName)
 //	if err != nil {
 //		t.Fatal("couldn't read the log file!", err)

streamhandler/request.go

@@ -1,10 +1,8 @@
 package streamhandler
 
 import (
-	"fmt"
 	"net/http"
 	"net/url"
-	"strconv"
 	"strings"
 
 	"github.com/cloudflare/cloudflared/h2mux"
@@ -28,65 +26,9 @@ func createRequest(stream *h2mux.MuxedStream, url *url.URL) (*http.Request, erro
 	if err != nil {
 		return nil, errors.Wrap(err, "unexpected error from http.NewRequest")
 	}
-	err = H2RequestHeadersToH1Request(stream.Headers, req)
+	err = h2mux.H2RequestHeadersToH1Request(stream.Headers, req)
 	if err != nil {
 		return nil, errors.Wrap(err, "invalid request received")
 	}
 	return req, nil
 }
-
-// H2RequestHeadersToH1Request converts the HTTP/2 headers to an HTTP/1 Request
-// object. This includes conversion of the pseudo-headers into their closest
-// HTTP/1 equivalents. See https://tools.ietf.org/html/rfc7540#section-8.1.2.3
-func H2RequestHeadersToH1Request(h2 []h2mux.Header, h1 *http.Request) error {
-	for _, header := range h2 {
-		switch header.Name {
-		case ":method":
-			h1.Method = header.Value
-		case ":scheme":
-			// noop - use the preexisting scheme from h1.URL
-		case ":authority":
-			// Otherwise the host header will be based on the origin URL
-			h1.Host = header.Value
-		case ":path":
-			// We don't want to be an "opinionated" proxy, so ideally we would use :path as-is.
-			// However, this HTTP/1 Request object belongs to the Go standard library,
-			// whose URL package makes some opinionated decisions about the encoding of
-			// URL characters: see the docs of https://godoc.org/net/url#URL,
-			// in particular the EscapedPath method https://godoc.org/net/url#URL.EscapedPath,
-			// which is always used when computing url.URL.String(), whether we'd like it or not.
-			//
-			// Well, not *always*. We could circumvent this by using url.URL.Opaque. But
-			// that would present unusual difficulties when using an HTTP proxy: url.URL.Opaque
-			// is treated differently when HTTP_PROXY is set!
-			// See https://github.com/golang/go/issues/5684#issuecomment-66080888
-			//
-			// This means we are subject to the behavior of net/url's function `shouldEscape`
-			// (as invoked with mode=encodePath): https://github.com/golang/go/blob/go1.12.7/src/net/url/url.go#L101
-
-			if header.Value == "*" {
-				h1.URL.Path = "*"
-				continue
-			}
-			// Due to the behavior of validation.ValidateUrl, h1.URL may
-			// already have a partial value, with or without a trailing slash.
-			base := h1.URL.String()
-			base = strings.TrimRight(base, "/")
-			// But we know :path begins with '/', because we handled '*' above - see RFC7540
-			url, err := url.Parse(base + header.Value)
-			if err != nil {
-				return errors.Wrap(err, fmt.Sprintf("invalid path '%v'", header.Value))
-			}
-			h1.URL = url
-		case "content-length":
-			contentLength, err := strconv.ParseInt(header.Value, 10, 64)
-			if err != nil {
-				return fmt.Errorf("unparseable content length")
-			}
-			h1.ContentLength = contentLength
-		default:
-			h1.Header.Add(http.CanonicalHeaderKey(header.Name), header.Value)
-		}
-	}
-	return nil
-}

streamhandler/request_test.go

@@ -1,441 +0,0 @@
-package streamhandler
-
-import (
-	"fmt"
-	"math/rand"
-	"net/http"
-	"net/url"
-	"reflect"
-	"regexp"
-	"strings"
-	"testing"
-	"testing/quick"
-
-	"github.com/cloudflare/cloudflared/h2mux"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestH2RequestHeadersToH1Request_RegularHeaders(t *testing.T) {
-	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
-	assert.NoError(t, err)
-
-	headersConversionErr := H2RequestHeadersToH1Request(
-		[]h2mux.Header{
-			h2mux.Header{
-				Name:  "Mock header 1",
-				Value: "Mock value 1",
-			},
-			h2mux.Header{
-				Name:  "Mock header 2",
-				Value: "Mock value 2",
-			},
-		},
-		request,
-	)
-
-	assert.Equal(t, http.Header{
-		"Mock header 1": []string{"Mock value 1"},
-		"Mock header 2": []string{"Mock value 2"},
-	}, request.Header)
-
-	assert.NoError(t, headersConversionErr)
-}
-
-func TestH2RequestHeadersToH1Request_NoHeaders(t *testing.T) {
-	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
-	assert.NoError(t, err)
-
-	headersConversionErr := H2RequestHeadersToH1Request(
-		[]h2mux.Header{},
-		request,
-	)
-
-	assert.Equal(t, http.Header{}, request.Header)
-
-	assert.NoError(t, headersConversionErr)
-}
-
-func TestH2RequestHeadersToH1Request_InvalidHostPath(t *testing.T) {
-	request, err := http.NewRequest(http.MethodGet, "http://example.com", nil)
-	assert.NoError(t, err)
-
-	headersConversionErr := H2RequestHeadersToH1Request(
-		[]h2mux.Header{
-			h2mux.Header{
-				Name:  ":path",
-				Value: "//bad_path/",
-			},
-			h2mux.Header{
-				Name:  "Mock header",
-				Value: "Mock value",
-			},
-		},
-		request,
-	)
-
-	assert.Equal(t, http.Header{
-		"Mock header": []string{"Mock value"},
-	}, request.Header)
-
-	assert.Equal(t, "http://example.com//bad_path/", request.URL.String())
-
-	assert.NoError(t, headersConversionErr)
-}
-
-func TestH2RequestHeadersToH1Request_HostPathWithQuery(t *testing.T) {
-	request, err := http.NewRequest(http.MethodGet, "http://example.com/", nil)
-	assert.NoError(t, err)
-
-	headersConversionErr := H2RequestHeadersToH1Request(
-		[]h2mux.Header{
-			h2mux.Header{
-				Name:  ":path",
-				Value: "/?query=mock%20value",
-			},
-			h2mux.Header{
-				Name:  "Mock header",
-				Value: "Mock value",
-			},
-		},
-		request,
-	)
-
-	assert.Equal(t, http.Header{
-		"Mock header": []string{"Mock value"},
-	}, request.Header)
-
-	assert.Equal(t, "http://example.com/?query=mock%20value", request.URL.String())
-
-	assert.NoError(t, headersConversionErr)
-}
-
-func TestH2RequestHeadersToH1Request_HostPathWithURLEncoding(t *testing.T) {
-	request, err := http.NewRequest(http.MethodGet, "http://example.com/", nil)
-	assert.NoError(t, err)
-
-	headersConversionErr := H2RequestHeadersToH1Request(
-		[]h2mux.Header{
-			h2mux.Header{
-				Name:  ":path",
-				Value: "/mock%20path",
-			},
-			h2mux.Header{
-				Name:  "Mock header",
-				Value: "Mock value",
-			},
-		},
-		request,
-	)
-
-	assert.Equal(t, http.Header{
-		"Mock header": []string{"Mock value"},
-	}, request.Header)
-
-	assert.Equal(t, "http://example.com/mock%20path", request.URL.String())
-
-	assert.NoError(t, headersConversionErr)
-}
-
-func TestH2RequestHeadersToH1Request_WeirdURLs(t *testing.T) {
-	type testCase struct {
-		path string
-		want string
-	}
-	testCases := []testCase{
-		{
-			path: "",
-			want: "",
-		},
-		{
-			path: "/",
-			want: "/",
-		},
-		{
-			path: "//",
-			want: "//",
-		},
-		{
-			path: "/test",
-			want: "/test",
-		},
-		{
-			path: "//test",
-			want: "//test",
-		},
-		{
-			// https://github.com/cloudflare/cloudflared/issues/81
-			path: "//test/",
-			want: "//test/",
-		},
-		{
-			path: "/%2Ftest",
-			want: "/%2Ftest",
-		},
-		{
-			path: "//%20test",
-			want: "//%20test",
-		},
-		{
-			// https://github.com/cloudflare/cloudflared/issues/124
-			path: "/test?get=somthing%20a",
-			want: "/test?get=somthing%20a",
-		},
-		{
-			path: "/%20",
-			want: "/%20",
-		},
-		{
-			// stdlib's EscapedPath() will always percent-encode ' '
-			path: "/ ",
-			want: "/%20",
-		},
-		{
-			path: "/ a ",
-			want: "/%20a%20",
-		},
-		{
-			path: "/a%20b",
-			want: "/a%20b",
-		},
-		{
-			path: "/foo/bar;param?query#frag",
-			want: "/foo/bar;param?query#frag",
-		},
-		{
-			// stdlib's EscapedPath() will always percent-encode non-ASCII chars
-			path: "/a␠b",
-			want: "/a%E2%90%A0b",
-		},
-		{
-			path: "/a-umlaut-ä",
-			want: "/a-umlaut-%C3%A4",
-		},
-		{
-			path: "/a-umlaut-%C3%A4",
-			want: "/a-umlaut-%C3%A4",
-		},
-		{
-			path: "/a-umlaut-%c3%a4",
-			want: "/a-umlaut-%c3%a4",
-		},
-		{
-			// here the second '#' is treated as part of the fragment
-			path: "/a#b#c",
-			want: "/a#b%23c",
-		},
-		{
-			path: "/a#b␠c",
-			want: "/a#b%E2%90%A0c",
-		},
-		{
-			path: "/a#b%20c",
-			want: "/a#b%20c",
-		},
-		{
-			path: "/a#b c",
-			want: "/a#b%20c",
-		},
-		{
-			// stdlib's EscapedPath() will always percent-encode '\'
-			path: "/\\",
-			want: "/%5C",
-		},
-		{
-			path: "/a\\",
-			want: "/a%5C",
-		},
-		{
-			path: "/a,b.c.",
-			want: "/a,b.c.",
-		},
-		{
-			path: "/.",
-			want: "/.",
-		},
-		{
-			// stdlib's EscapedPath() will always percent-encode '`'
-			path: "/a`",
-			want: "/a%60",
-		},
-		{
-			path: "/a[0]",
-			want: "/a[0]",
-		},
-		{
-			path: "/?a[0]=5 &b[]=",
-			want: "/?a[0]=5 &b[]=",
-		},
-		{
-			path: "/?a=%22b%20%22",
-			want: "/?a=%22b%20%22",
-		},
-	}
-
-	for index, testCase := range testCases {
-		requestURL := "https://example.com"
-
-		request, err := http.NewRequest(http.MethodGet, requestURL, nil)
-		assert.NoError(t, err)
-		headersConversionErr := H2RequestHeadersToH1Request(
-			[]h2mux.Header{
-				h2mux.Header{
-					Name:  ":path",
-					Value: testCase.path,
-				},
-				h2mux.Header{
-					Name:  "Mock header",
-					Value: "Mock value",
-				},
-			},
-			request,
-		)
-		assert.NoError(t, headersConversionErr)
-
-		assert.Equal(t,
-			http.Header{
-				"Mock header": []string{"Mock value"},
-			},
-			request.Header)
-
-		assert.Equal(t,
-			"https://example.com"+testCase.want,
-			request.URL.String(),
-			"Failed URL index: %v %#v", index, testCase)
-	}
-}
-
-func TestH2RequestHeadersToH1Request_QuickCheck(t *testing.T) {
-	config := &quick.Config{
-		Values: func(args []reflect.Value, rand *rand.Rand) {
-			args[0] = reflect.ValueOf(randomHTTP2Path(t, rand))
-		},
-	}
-
-	type testOrigin struct {
-		url string
-
-		expectedScheme   string
-		expectedBasePath string
-	}
-	testOrigins := []testOrigin{
-		{
-			url:              "http://origin.hostname.example.com:8080",
-			expectedScheme:   "http",
-			expectedBasePath: "http://origin.hostname.example.com:8080",
-		},
-		{
-			url:              "http://origin.hostname.example.com:8080/",
-			expectedScheme:   "http",
-			expectedBasePath: "http://origin.hostname.example.com:8080",
-		},
-		{
-			url:              "http://origin.hostname.example.com:8080/api",
-			expectedScheme:   "http",
-			expectedBasePath: "http://origin.hostname.example.com:8080/api",
-		},
-		{
-			url:              "http://origin.hostname.example.com:8080/api/",
-			expectedScheme:   "http",
-			expectedBasePath: "http://origin.hostname.example.com:8080/api",
-		},
-		{
-			url:              "https://origin.hostname.example.com:8080/api",
-			expectedScheme:   "https",
-			expectedBasePath: "https://origin.hostname.example.com:8080/api",
-		},
-	}
-
-	// use multiple schemes to demonstrate that the URL is based on the
-	// origin's scheme, not the :scheme header
-	for _, testScheme := range []string{"http", "https"} {
-		for _, testOrigin := range testOrigins {
-			assertion := func(testPath string) bool {
-				const expectedMethod = "POST"
-				const expectedHostname = "request.hostname.example.com"
-
-				h2 := []h2mux.Header{
-					h2mux.Header{Name: ":method", Value: expectedMethod},
-					h2mux.Header{Name: ":scheme", Value: testScheme},
-					h2mux.Header{Name: ":authority", Value: expectedHostname},
-					h2mux.Header{Name: ":path", Value: testPath},
-				}
-				h1, err := http.NewRequest("GET", testOrigin.url, nil)
-				require.NoError(t, err)
-
-				err = H2RequestHeadersToH1Request(h2, h1)
-				return assert.NoError(t, err) &&
-					assert.Equal(t, expectedMethod, h1.Method) &&
-					assert.Equal(t, expectedHostname, h1.Host) &&
-					assert.Equal(t, testOrigin.expectedScheme, h1.URL.Scheme) &&
-					assert.Equal(t, testOrigin.expectedBasePath+testPath, h1.URL.String())
-			}
-			err := quick.Check(assertion, config)
-			assert.NoError(t, err)
-		}
-	}
-}
-
-func randomASCIIPrintableChar(rand *rand.Rand) int {
-	// smallest printable ASCII char is 32, largest is 126
-	const startPrintable = 32
-	const endPrintable = 127
-	return startPrintable + rand.Intn(endPrintable-startPrintable)
-}
-
-// randomASCIIText generates an ASCII string, some of whose characters may be
-// percent-encoded. Its "logical length" (ignoring percent-encoding) is
-// between 1 and `maxLength`.
-func randomASCIIText(rand *rand.Rand, minLength int, maxLength int) string {
-	length := minLength + rand.Intn(maxLength)
-	result := ""
-	for i := 0; i < length; i++ {
-		c := randomASCIIPrintableChar(rand)
-
-		// 1/4 chance of using percent encoding when not necessary
-		if c == '%' || rand.Intn(4) == 0 {
-			result += fmt.Sprintf("%%%02X", c)
-		} else {
-			result += string(c)
-		}
-	}
-	return result
-}
-
-// Calls `randomASCIIText` and ensures the result is a valid URL path,
-// i.e. one that can pass unchanged through url.URL.String()
-func randomHTTP1Path(t *testing.T, rand *rand.Rand, minLength int, maxLength int) string {
-	text := randomASCIIText(rand, minLength, maxLength)
-	regexp, err := regexp.Compile("[^/;,]*")
-	require.NoError(t, err)
-	return "/" + regexp.ReplaceAllStringFunc(text, url.PathEscape)
-}
-
-// Calls `randomASCIIText` and ensures the result is a valid URL query,
-// i.e. one that can pass unchanged through url.URL.String()
-func randomHTTP1Query(t *testing.T, rand *rand.Rand, minLength int, maxLength int) string {
-	text := randomASCIIText(rand, minLength, maxLength)
-	return "?" + strings.ReplaceAll(text, "#", "%23")
-}
-
-// Calls `randomASCIIText` and ensures the result is a valid URL fragment,
-// i.e. one that can pass unchanged through url.URL.String()
-func randomHTTP1Fragment(t *testing.T, rand *rand.Rand, minLength int, maxLength int) string {
-	text := randomASCIIText(rand, minLength, maxLength)
-	url, err := url.Parse("#" + text)
-	require.NoError(t, err)
-	return url.String()
-}
-
-// Assemble a random :path pseudoheader that is legal by Go stdlib standards
-// (i.e. all characters will satisfy "net/url".shouldEscape for their respective locations)
-func randomHTTP2Path(t *testing.T, rand *rand.Rand) string {
-	result := randomHTTP1Path(t, rand, 1, 64)
-	if rand.Intn(2) == 1 {
-		result += randomHTTP1Query(t, rand, 1, 32)
-	}
-	if rand.Intn(2) == 1 {
-		result += randomHTTP1Fragment(t, rand, 1, 16)
-	}
-	return result
-}

streamhandler/stream_handler.go

@@ -180,11 +180,12 @@ func (s *StreamHandler) requestLogger(req *http.Request, tunnelHostname h2mux.Tu
 }
 
 func (s *StreamHandler) writeErrorStatus(stream *h2mux.MuxedStream, status *httpErrorStatus) {
-	stream.WriteHeaders([]h2mux.Header{
+	_ = stream.WriteHeaders([]h2mux.Header{
 		{
 			Name:  statusPseudoHeader,
 			Value: status.status,
 		},
+		h2mux.CreateResponseMetaHeader(h2mux.ResponseMetaHeaderField, h2mux.ResponseSourceCloudflared),
 	})
-	stream.Write(status.text)
+	_, _ = stream.Write(status.text)
 }

streamhandler/stream_handler_test.go

@@ -31,11 +31,11 @@ var (
 		{Name: ":scheme", Value: "http"},
 		{Name: ":authority", Value: "example.com"},
 		{Name: ":path", Value: "/"},
+
+		// Regular headers must always come after the pseudoheaders
+		{Name: h2mux.RequestUserHeadersField, Value: ""},
 	}
-	tunnelHostnameHeader = h2mux.Header{
-		Name:  h2mux.CloudflaredProxyTunnelHostnameHeader,
-		Value: testTunnelHostname.String(),
-	}
+	tunnelHostnameHeader = h2mux.Header{Name: h2mux.CloudflaredProxyTunnelHostnameHeader, Value: testTunnelHostname.String()}
 )
 
 func TestServeRequest(t *testing.T) {
@@ -69,29 +69,73 @@ func TestServeRequest(t *testing.T) {
 	assertRespBody(t, message, stream)
 }
 
-func TestServeBadRequest(t *testing.T) {
+func createStreamHandler() *StreamHandler {
 	configChan := make(chan *pogs.ClientConfig)
 	useConfigResultChan := make(chan *pogs.UseConfigurationResult)
-	streamHandler := NewStreamHandler(configChan, useConfigResultChan, logrus.New())
 
+	return NewStreamHandler(configChan, useConfigResultChan, logrus.New())
+}
+
+func createRequestMuxPair(t *testing.T, streamHandler *StreamHandler) *DefaultMuxerPair {
 	muxPair := NewDefaultMuxerPair(t, streamHandler)
 	muxPair.Serve(t)
 
+	return muxPair
+}
+
+func TestServeStatusBadRequest(t *testing.T) {
 	ctx, cancel := context.WithTimeout(context.Background(), testOpenStreamTimeout)
 	defer cancel()
 
 	// No tunnel hostname header, expect to get 400 Bad Request
-	stream, err := muxPair.EdgeMux.OpenStream(ctx, baseHeaders, nil)
+	stream, err := createRequestMuxPair(t, createStreamHandler()).EdgeMux.OpenStream(ctx, baseHeaders, nil)
 	assert.NoError(t, err)
 	assertStatusHeader(t, http.StatusBadRequest, stream.Headers)
 	assertRespBody(t, statusBadRequest.text, stream)
+}
+
+func TestServeInvalidContentLength(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), testOpenStreamTimeout)
+	defer cancel()
+
+	// Invalid content-length, wouldn't be able to create a request
+	// Expect to get 400 Bad Request
+	headers := append(baseHeaders, tunnelHostnameHeader)
+	headers = append(headers, h2mux.Header{
+		Name:  "content-length",
+		Value: "x",
+	})
+	streamHandler := createStreamHandler()
+	streamHandler.UpdateConfig([]*pogs.ReverseProxyConfig{
+		{
+			TunnelHostname: testTunnelHostname,
+			OriginConfig: &pogs.HTTPOriginConfig{
+				URLString: "",
+			},
+		},
+	})
+	mux := createRequestMuxPair(t, streamHandler).EdgeMux
+	stream, err := mux.OpenStream(ctx, headers, nil)
+	assert.NoError(t, err)
+	assertStatusHeader(t, http.StatusBadRequest, stream.Headers)
+	assertRespBody(t, statusBadRequest.text, stream)
+}
+
+func TestServeStatusNotFound(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), testOpenStreamTimeout)
+	defer cancel()
 
 	// No mapping for the tunnel hostname, expect to get 404 Not Found
 	headers := append(baseHeaders, tunnelHostnameHeader)
-	stream, err = muxPair.EdgeMux.OpenStream(ctx, headers, nil)
+	stream, err := createRequestMuxPair(t, createStreamHandler()).EdgeMux.OpenStream(ctx, headers, nil)
 	assert.NoError(t, err)
 	assertStatusHeader(t, http.StatusNotFound, stream.Headers)
 	assertRespBody(t, statusNotFound.text, stream)
+}
+
+func TestServeStatusBadGateway(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), testOpenStreamTimeout)
+	defer cancel()
 
 	// Nothing listening on empty url, so proxy would fail. Expect to get 502 Bad Gateway
 	reverseProxyConfigs := []*pogs.ReverseProxyConfig{
@@ -102,21 +146,13 @@ func TestServeBadRequest(t *testing.T) {
 			},
 		},
 	}
+	streamHandler := createStreamHandler()
 	streamHandler.UpdateConfig(reverseProxyConfigs)
-	stream, err = muxPair.EdgeMux.OpenStream(ctx, headers, nil)
+	headers := append(baseHeaders, tunnelHostnameHeader)
+	stream, err := createRequestMuxPair(t, streamHandler).EdgeMux.OpenStream(ctx, headers, nil)
 	assert.NoError(t, err)
 	assertStatusHeader(t, http.StatusBadGateway, stream.Headers)
 	assertRespBody(t, statusBadGateway.text, stream)
-
-	// Invalid content-length, wouldn't not be able to create a request. Expect to get 400 Bad Request
-	headers = append(headers, h2mux.Header{
-		Name:  "content-length",
-		Value: "x",
-	})
-	stream, err = muxPair.EdgeMux.OpenStream(ctx, headers, nil)
-	assert.NoError(t, err)
-	assertStatusHeader(t, http.StatusBadRequest, stream.Headers)
-	assertRespBody(t, statusBadRequest.text, stream)
 }
 
 func assertStatusHeader(t *testing.T, expectedStatus int, headers []h2mux.Header) {
@@ -218,6 +254,6 @@ type mockHTTPHandler struct {
 	message []byte
 }
 
-func (mth *mockHTTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	w.Write(mth.message)
+func (mth *mockHTTPHandler) ServeHTTP(w http.ResponseWriter, _ *http.Request) {
+	_, _ = w.Write(mth.message)
 }

supervisor/supervisor.go

@@ -1,3 +1,4 @@
+// Package supervisor is used by declarative tunnels to get/apply new config from the edge.
 package supervisor
 
 import (
@@ -13,6 +14,7 @@ import (
 
 	"github.com/cloudflare/cloudflared/cmd/cloudflared/updater"
 	"github.com/cloudflare/cloudflared/connection"
+	"github.com/cloudflare/cloudflared/edgediscovery"
 	"github.com/cloudflare/cloudflared/h2mux"
 	"github.com/cloudflare/cloudflared/streamhandler"
 	"github.com/cloudflare/cloudflared/tunnelrpc/pogs"
@@ -56,7 +58,7 @@ func NewSupervisor(
 	defaultClientConfig *pogs.ClientConfig,
 	userCredential []byte,
 	tlsConfig *tls.Config,
-	serviceDiscoverer connection.EdgeServiceDiscoverer,
+	serviceDiscoverer *edgediscovery.Edge,
 	cloudflaredConfig *connection.CloudflaredConfig,
 	autoupdater *updater.AutoUpdater,
 	supportAutoupdate bool,

tunneldns/https_upstream.go

@@ -6,6 +6,7 @@ import (
 	"crypto/tls"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"net/url"
 	"time"
@@ -22,33 +23,18 @@ const (
 
 // UpstreamHTTPS is the upstream implementation for DNS over HTTPS service
 type UpstreamHTTPS struct {
-	client   *http.Client
-	endpoint *url.URL
+	client     *http.Client
+	endpoint   *url.URL
+	bootstraps []string
 }
 
-// NewUpstreamHTTPS creates a new DNS over HTTPS upstream from hostname
-func NewUpstreamHTTPS(endpoint string) (Upstream, error) {
+// NewUpstreamHTTPS creates a new DNS over HTTPS upstream from endpoint
+func NewUpstreamHTTPS(endpoint string, bootstraps []string) (Upstream, error) {
 	u, err := url.Parse(endpoint)
 	if err != nil {
 		return nil, err
 	}
-
-	// Update TLS and HTTP client configuration
-	tls := &tls.Config{ServerName: u.Hostname()}
-	transport := &http.Transport{
-		TLSClientConfig:    tls,
-		DisableCompression: true,
-		MaxIdleConns:       1,
-		Proxy:              http.ProxyFromEnvironment,
-	}
-	http2.ConfigureTransport(transport)
-
-	client := &http.Client{
-		Timeout:   defaultTimeout,
-		Transport: transport,
-	}
-
-	return &UpstreamHTTPS{client: client, endpoint: u}, nil
+	return &UpstreamHTTPS{client: configureClient(u.Hostname()), endpoint: u, bootstraps: bootstraps}, nil
 }
 
 // Exchange provides an implementation for the Upstream interface
@@ -58,34 +44,55 @@ func (u *UpstreamHTTPS) Exchange(ctx context.Context, query *dns.Msg) (*dns.Msg,
 		return nil, errors.Wrap(err, "failed to pack DNS query")
 	}
 
+	if len(query.Question) > 0 && query.Question[0].Name == fmt.Sprintf("%s.", u.endpoint.Hostname()) {
+		for _, bootstrap := range u.bootstraps {
+			endpoint, client, err := configureBootstrap(bootstrap)
+			if err != nil {
+				log.WithError(err).Errorf("failed to configure boostrap upstream %s", bootstrap)
+				continue
+			}
+			msg, err := exchange(queryBuf, query.Id, endpoint, client)
+			if err != nil {
+				log.WithError(err).Errorf("failed to connect to a boostrap upstream %s", bootstrap)
+				continue
+			}
+			return msg, nil
+		}
+		return nil, fmt.Errorf("failed to reach any bootstrap upstream: %v", u.bootstraps)
+	}
+
+	return exchange(queryBuf, query.Id, u.endpoint, u.client)
+}
+
+func exchange(msg []byte, queryID uint16, endpoint *url.URL, client *http.Client) (*dns.Msg, error) {
 	// No content negotiation for now, use DNS wire format
-	buf, backendErr := u.exchangeWireformat(queryBuf)
+	buf, backendErr := exchangeWireformat(msg, endpoint, client)
 	if backendErr == nil {
 		response := &dns.Msg{}
 		if err := response.Unpack(buf); err != nil {
 			return nil, errors.Wrap(err, "failed to unpack DNS response from body")
 		}
 
-		response.Id = query.Id
+		response.Id = queryID
 		return response, nil
 	}
 
-	log.WithError(backendErr).Errorf("failed to connect to an HTTPS backend %q", u.endpoint)
+	log.WithError(backendErr).Errorf("failed to connect to an HTTPS backend %q", endpoint)
 	return nil, backendErr
 }
 
 // Perform message exchange with the default UDP wireformat defined in current draft
 // https://datatracker.ietf.org/doc/draft-ietf-doh-dns-over-https
-func (u *UpstreamHTTPS) exchangeWireformat(msg []byte) ([]byte, error) {
-	req, err := http.NewRequest("POST", u.endpoint.String(), bytes.NewBuffer(msg))
+func exchangeWireformat(msg []byte, endpoint *url.URL, client *http.Client) ([]byte, error) {
+	req, err := http.NewRequest("POST", endpoint.String(), bytes.NewBuffer(msg))
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create an HTTPS request")
 	}
 
 	req.Header.Add("Content-Type", "application/dns-message")
-	req.Host = u.endpoint.Hostname()
+	req.Host = endpoint.Host
 
-	resp, err := u.client.Do(req)
+	resp, err := client.Do(req)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to perform an HTTPS request")
 	}
@@ -104,3 +111,33 @@ func (u *UpstreamHTTPS) exchangeWireformat(msg []byte) ([]byte, error) {
 
 	return buf, nil
 }
+
+func configureBootstrap(bootstrap string) (*url.URL, *http.Client, error) {
+	b, err := url.Parse(bootstrap)
+	if err != nil {
+		return nil, nil, err
+	}
+	if ip := net.ParseIP(b.Hostname()); ip == nil {
+		return nil, nil, fmt.Errorf("bootstrap address of %s must be an IP address", b.Hostname())
+	}
+
+	return b, configureClient(b.Hostname()), nil
+}
+
+// configureClient will configure a HTTPS client for upstream DoH requests
+func configureClient(hostname string) *http.Client {
+	// Update TLS and HTTP client configuration
+	tls := &tls.Config{ServerName: hostname}
+	transport := &http.Transport{
+		TLSClientConfig:    tls,
+		DisableCompression: true,
+		MaxIdleConns:       1,
+		Proxy:              http.ProxyFromEnvironment,
+	}
+	http2.ConfigureTransport(transport)
+
+	return &http.Client{
+		Timeout:   defaultTimeout,
+		Transport: transport,
+	}
+}

tunneldns/tunnel.go

@@ -35,7 +35,7 @@ func Run(c *cli.Context) error {
 
 	go metrics.ServeMetrics(metricsListener, nil, logger)
 
-	listener, err := CreateListener(c.String("address"), uint16(c.Uint("port")), c.StringSlice("upstream"))
+	listener, err := CreateListener(c.String("address"), uint16(c.Uint("port")), c.StringSlice("upstream"), c.StringSlice("bootstrap"))
 	if err != nil {
 		logger.WithError(err).Errorf("Failed to create the listeners")
 		return err
@@ -117,12 +117,12 @@ func (l *Listener) Stop() error {
 }
 
 // CreateListener configures the server and bound sockets
-func CreateListener(address string, port uint16, upstreams []string) (*Listener, error) {
+func CreateListener(address string, port uint16, upstreams []string, bootstraps []string) (*Listener, error) {
 	// Build the list of upstreams
 	upstreamList := make([]Upstream, 0)
 	for _, url := range upstreams {
 		logger.WithField("url", url).Infof("Adding DNS upstream")
-		upstream, err := NewUpstreamHTTPS(url)
+		upstream, err := NewUpstreamHTTPS(url, bootstraps)
 		if err != nil {
 			return nil, errors.Wrap(err, "failed to create HTTPS upstream")
 		}

tunnelrpc/pogs/reconnect_tunnel.go

@@ -16,6 +16,10 @@ func (i TunnelServer_PogsImpl) ReconnectTunnel(p tunnelrpc.TunnelServer_reconnec
 	if err != nil {
 		return err
 	}
+	connDigest, err := p.Params.ConnDigest()
+	if err != nil {
+		return err
+	}
 	hostname, err := p.Params.Hostname()
 	if err != nil {
 		return err
@@ -29,7 +33,7 @@ func (i TunnelServer_PogsImpl) ReconnectTunnel(p tunnelrpc.TunnelServer_reconnec
 		return err
 	}
 	server.Ack(p.Options)
-	registration, err := i.impl.ReconnectTunnel(p.Ctx, jwt, eventDigest, hostname, pogsOptions)
+	registration, err := i.impl.ReconnectTunnel(p.Ctx, jwt, eventDigest, connDigest, hostname, pogsOptions)
 	if err != nil {
 		return err
 	}
@@ -44,6 +48,7 @@ func (c TunnelServer_PogsClient) ReconnectTunnel(
 	ctx context.Context,
 	jwt,
 	eventDigest []byte,
+	connDigest []byte,
 	hostname string,
 	options *RegistrationOptions,
 ) *TunnelRegistration {
@@ -57,6 +62,10 @@ func (c TunnelServer_PogsClient) ReconnectTunnel(
 		if err != nil {
 			return err
 		}
+		err = p.SetConnDigest(connDigest)
+		if err != nil {
+			return err
+		}
 		err = p.SetHostname(hostname)
 		if err != nil {
 			return err

tunnelrpc/pogs/tunnelrpc.go

@@ -47,6 +47,7 @@ type SuccessfulTunnelRegistration struct {
 	LogLines    []string
 	TunnelID    string `capnp:"tunnelID"`
 	EventDigest []byte
+	ConnDigest  []byte
 }
 
 func NewSuccessfulTunnelRegistration(
@@ -54,6 +55,7 @@ func NewSuccessfulTunnelRegistration(
 	logLines []string,
 	tunnelID string,
 	eventDigest []byte,
+	connDigest []byte,
 ) *TunnelRegistration {
 	// Marshal nil will result in an error
 	if logLines == nil {
@@ -65,6 +67,7 @@ func NewSuccessfulTunnelRegistration(
 			LogLines:    logLines,
 			TunnelID:    tunnelID,
 			EventDigest: eventDigest,
+			ConnDigest:  connDigest,
 		},
 	}
 }
@@ -168,6 +171,7 @@ type RegistrationOptions struct {
 	CompressionQuality   uint64 `capnp:"compressionQuality"`
 	UUID                 string `capnp:"uuid"`
 	NumPreviousAttempts  uint8
+	Features             []string
 }
 
 func MarshalRegistrationOptions(s tunnelrpc.RegistrationOptions, p *RegistrationOptions) error {
@@ -433,7 +437,7 @@ type TunnelServer interface {
 	UnregisterTunnel(ctx context.Context, gracePeriodNanoSec int64) error
 	Connect(ctx context.Context, parameters *ConnectParameters) (ConnectResult, error)
 	Authenticate(ctx context.Context, originCert []byte, hostname string, options *RegistrationOptions) (*AuthenticateResponse, error)
-	ReconnectTunnel(ctx context.Context, jwt, eventDigest []byte, hostname string, options *RegistrationOptions) (*TunnelRegistration, error)
+	ReconnectTunnel(ctx context.Context, jwt, eventDigest, connDigest []byte, hostname string, options *RegistrationOptions) (*TunnelRegistration, error)
 }
 
 func TunnelServer_ServerToClient(s TunnelServer) tunnelrpc.TunnelServer {
@@ -517,6 +521,7 @@ type TunnelServer_PogsClient struct {
 }
 
 func (c TunnelServer_PogsClient) Close() error {
+	c.Client.Close()
 	return c.Conn.Close()
 }
 

tunnelrpc/pogs/tunnelrpc_test.go

@@ -22,6 +22,7 @@ var (
 	testErr         = fmt.Errorf("Invalid credential")
 	testLogLines    = []string{"all", "working"}
 	testEventDigest = []byte("asdf")
+	testConnDigest  = []byte("lkjh")
 )
 
 // *PermanentRegistrationError implements TunnelRegistrationError
@@ -32,8 +33,8 @@ var _ TunnelRegistrationError = (*RetryableRegistrationError)(nil)
 
 func TestTunnelRegistration(t *testing.T) {
 	testCases := []*TunnelRegistration{
-		NewSuccessfulTunnelRegistration(testURL, testLogLines, testTunnelID, testEventDigest),
-		NewSuccessfulTunnelRegistration(testURL, nil, testTunnelID, testEventDigest),
+		NewSuccessfulTunnelRegistration(testURL, testLogLines, testTunnelID, testEventDigest, testConnDigest),
+		NewSuccessfulTunnelRegistration(testURL, nil, testTunnelID, testEventDigest, testConnDigest),
 		NewPermanentRegistrationError(testErr).Serialize(),
 		NewRetryableRegistrationError(testErr, testRetryAfterSeconds).Serialize(),
 	}

tunnelrpc/tunnelrpc.capnp

@@ -23,6 +23,8 @@ struct TunnelRegistration {
     retryAfterSeconds @5 :UInt16;
     # A unique ID used to reconnect this tunnel.
     eventDigest @6 :Data;
+    # A unique ID used to prove this tunnel was previously connected to a given metal.
+    connDigest @7 :Data;
 }
 
 struct RegistrationOptions {
@@ -50,6 +52,8 @@ struct RegistrationOptions {
     uuid @11 :Text;
     # number of previous attempts to send RegisterTunnel/ReconnectTunnel
     numPreviousAttempts @12 :UInt8;
+    # Set of features this cloudflared knows it supports
+    features @13 :List(Text);
 }
 
 struct CapnpConnectParameters {
@@ -293,7 +297,7 @@ interface TunnelServer {
     unregisterTunnel @2 (gracePeriodNanoSec :Int64) -> ();
     connect @3 (parameters :CapnpConnectParameters) -> (result :ConnectResult);
     authenticate @4 (originCert :Data, hostname :Text, options :RegistrationOptions) -> (result :AuthenticateResponse);
-    reconnectTunnel @5 (jwt :Data, eventDigest :Data, hostname :Text, options :RegistrationOptions) -> (result :TunnelRegistration);
+    reconnectTunnel @5 (jwt :Data, eventDigest :Data, connDigest :Data, hostname :Text, options :RegistrationOptions) -> (result :TunnelRegistration);
 }
 
 interface ClientService {

tunnelrpc/tunnelrpc.capnp.go

@@ -125,12 +125,12 @@ type TunnelRegistration struct{ capnp.Struct }
 const TunnelRegistration_TypeID = 0xf41a0f001ad49e46
 
 func NewTunnelRegistration(s *capnp.Segment) (TunnelRegistration, error) {
-	st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 8, PointerCount: 5})
+	st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 8, PointerCount: 6})
 	return TunnelRegistration{st}, err
 }
 
 func NewRootTunnelRegistration(s *capnp.Segment) (TunnelRegistration, error) {
-	st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 8, PointerCount: 5})
+	st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 8, PointerCount: 6})
 	return TunnelRegistration{st}, err
 }
 
@@ -256,12 +256,26 @@ func (s TunnelRegistration) SetEventDigest(v []byte) error {
 	return s.Struct.SetData(4, v)
 }
 
+func (s TunnelRegistration) ConnDigest() ([]byte, error) {
+	p, err := s.Struct.Ptr(5)
+	return []byte(p.Data()), err
+}
+
+func (s TunnelRegistration) HasConnDigest() bool {
+	p, err := s.Struct.Ptr(5)
+	return p.IsValid() || err != nil
+}
+
+func (s TunnelRegistration) SetConnDigest(v []byte) error {
+	return s.Struct.SetData(5, v)
+}
+
 // TunnelRegistration_List is a list of TunnelRegistration.
 type TunnelRegistration_List struct{ capnp.List }
 
 // NewTunnelRegistration creates a new list of TunnelRegistration.
 func NewTunnelRegistration_List(s *capnp.Segment, sz int32) (TunnelRegistration_List, error) {
-	l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 8, PointerCount: 5}, sz)
+	l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 8, PointerCount: 6}, sz)
 	return TunnelRegistration_List{l}, err
 }
 
@@ -292,12 +306,12 @@ type RegistrationOptions struct{ capnp.Struct }
 const RegistrationOptions_TypeID = 0xc793e50592935b4a
 
 func NewRegistrationOptions(s *capnp.Segment) (RegistrationOptions, error) {
-	st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 16, PointerCount: 7})
+	st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 16, PointerCount: 8})
 	return RegistrationOptions{st}, err
 }
 
 func NewRootRegistrationOptions(s *capnp.Segment) (RegistrationOptions, error) {
-	st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 16, PointerCount: 7})
+	st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 16, PointerCount: 8})
 	return RegistrationOptions{st}, err
 }
 
@@ -498,12 +512,37 @@ func (s RegistrationOptions) SetNumPreviousAttempts(v uint8) {
 	s.Struct.SetUint8(4, v)
 }
 
+func (s RegistrationOptions) Features() (capnp.TextList, error) {
+	p, err := s.Struct.Ptr(7)
+	return capnp.TextList{List: p.List()}, err
+}
+
+func (s RegistrationOptions) HasFeatures() bool {
+	p, err := s.Struct.Ptr(7)
+	return p.IsValid() || err != nil
+}
+
+func (s RegistrationOptions) SetFeatures(v capnp.TextList) error {
+	return s.Struct.SetPtr(7, v.List.ToPtr())
+}
+
+// NewFeatures sets the features field to a newly
+// allocated capnp.TextList, preferring placement in s's segment.
+func (s RegistrationOptions) NewFeatures(n int32) (capnp.TextList, error) {
+	l, err := capnp.NewTextList(s.Struct.Segment(), n)
+	if err != nil {
+		return capnp.TextList{}, err
+	}
+	err = s.Struct.SetPtr(7, l.List.ToPtr())
+	return l, err
+}
+
 // RegistrationOptions_List is a list of RegistrationOptions.
 type RegistrationOptions_List struct{ capnp.List }
 
 // NewRegistrationOptions creates a new list of RegistrationOptions.
 func NewRegistrationOptions_List(s *capnp.Segment, sz int32) (RegistrationOptions_List, error) {
-	l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 16, PointerCount: 7}, sz)
+	l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 16, PointerCount: 8}, sz)
 	return RegistrationOptions_List{l}, err
 }
 
@@ -2890,7 +2929,7 @@ func (c TunnelServer) ReconnectTunnel(ctx context.Context, params func(TunnelSer
 		Options: capnp.NewCallOptions(opts),
 	}
 	if params != nil {
-		call.ParamsSize = capnp.ObjectSize{DataSize: 0, PointerCount: 4}
+		call.ParamsSize = capnp.ObjectSize{DataSize: 0, PointerCount: 5}
 		call.ParamsFunc = func(s capnp.Struct) error { return params(TunnelServer_reconnectTunnel_Params{Struct: s}) }
 	}
 	return TunnelServer_reconnectTunnel_Results_Promise{Pipeline: capnp.NewPipeline(c.Client.Call(call))}
@@ -3888,12 +3927,12 @@ type TunnelServer_reconnectTunnel_Params struct{ capnp.Struct }
 const TunnelServer_reconnectTunnel_Params_TypeID = 0xa353a3556df74984
 
 func NewTunnelServer_reconnectTunnel_Params(s *capnp.Segment) (TunnelServer_reconnectTunnel_Params, error) {
-	st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 0, PointerCount: 4})
+	st, err := capnp.NewStruct(s, capnp.ObjectSize{DataSize: 0, PointerCount: 5})
 	return TunnelServer_reconnectTunnel_Params{st}, err
 }
 
 func NewRootTunnelServer_reconnectTunnel_Params(s *capnp.Segment) (TunnelServer_reconnectTunnel_Params, error) {
-	st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 0, PointerCount: 4})
+	st, err := capnp.NewRootStruct(s, capnp.ObjectSize{DataSize: 0, PointerCount: 5})
 	return TunnelServer_reconnectTunnel_Params{st}, err
 }
 
@@ -3935,37 +3974,51 @@ func (s TunnelServer_reconnectTunnel_Params) SetEventDigest(v []byte) error {
 	return s.Struct.SetData(1, v)
 }
 
-func (s TunnelServer_reconnectTunnel_Params) Hostname() (string, error) {
+func (s TunnelServer_reconnectTunnel_Params) ConnDigest() ([]byte, error) {
 	p, err := s.Struct.Ptr(2)
+	return []byte(p.Data()), err
+}
+
+func (s TunnelServer_reconnectTunnel_Params) HasConnDigest() bool {
+	p, err := s.Struct.Ptr(2)
+	return p.IsValid() || err != nil
+}
+
+func (s TunnelServer_reconnectTunnel_Params) SetConnDigest(v []byte) error {
+	return s.Struct.SetData(2, v)
+}
+
+func (s TunnelServer_reconnectTunnel_Params) Hostname() (string, error) {
+	p, err := s.Struct.Ptr(3)
 	return p.Text(), err
 }
 
 func (s TunnelServer_reconnectTunnel_Params) HasHostname() bool {
-	p, err := s.Struct.Ptr(2)
+	p, err := s.Struct.Ptr(3)
 	return p.IsValid() || err != nil
 }
 
 func (s TunnelServer_reconnectTunnel_Params) HostnameBytes() ([]byte, error) {
-	p, err := s.Struct.Ptr(2)
+	p, err := s.Struct.Ptr(3)
 	return p.TextBytes(), err
 }
 
 func (s TunnelServer_reconnectTunnel_Params) SetHostname(v string) error {
-	return s.Struct.SetText(2, v)
+	return s.Struct.SetText(3, v)
 }
 
 func (s TunnelServer_reconnectTunnel_Params) Options() (RegistrationOptions, error) {
-	p, err := s.Struct.Ptr(3)
+	p, err := s.Struct.Ptr(4)
 	return RegistrationOptions{Struct: p.Struct()}, err
 }
 
 func (s TunnelServer_reconnectTunnel_Params) HasOptions() bool {
-	p, err := s.Struct.Ptr(3)
+	p, err := s.Struct.Ptr(4)
 	return p.IsValid() || err != nil
 }
 
 func (s TunnelServer_reconnectTunnel_Params) SetOptions(v RegistrationOptions) error {
-	return s.Struct.SetPtr(3, v.Struct.ToPtr())
+	return s.Struct.SetPtr(4, v.Struct.ToPtr())
 }
 
 // NewOptions sets the options field to a newly
@@ -3975,7 +4028,7 @@ func (s TunnelServer_reconnectTunnel_Params) NewOptions() (RegistrationOptions,
 	if err != nil {
 		return RegistrationOptions{}, err
 	}
-	err = s.Struct.SetPtr(3, ss.Struct.ToPtr())
+	err = s.Struct.SetPtr(4, ss.Struct.ToPtr())
 	return ss, err
 }
 
@@ -3984,7 +4037,7 @@ type TunnelServer_reconnectTunnel_Params_List struct{ capnp.List }
 
 // NewTunnelServer_reconnectTunnel_Params creates a new list of TunnelServer_reconnectTunnel_Params.
 func NewTunnelServer_reconnectTunnel_Params_List(s *capnp.Segment, sz int32) (TunnelServer_reconnectTunnel_Params_List, error) {
-	l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 0, PointerCount: 4}, sz)
+	l, err := capnp.NewCompositeList(s, capnp.ObjectSize{DataSize: 0, PointerCount: 5}, sz)
 	return TunnelServer_reconnectTunnel_Params_List{l}, err
 }
 
@@ -4010,7 +4063,7 @@ func (p TunnelServer_reconnectTunnel_Params_Promise) Struct() (TunnelServer_reco
 }
 
 func (p TunnelServer_reconnectTunnel_Params_Promise) Options() RegistrationOptions_Promise {
-	return RegistrationOptions_Promise{Pipeline: p.Pipeline.GetPipeline(3)}
+	return RegistrationOptions_Promise{Pipeline: p.Pipeline.GetPipeline(4)}
 }
 
 type TunnelServer_reconnectTunnel_Results struct{ capnp.Struct }
@@ -4330,253 +4383,257 @@ func (p ClientService_useConfiguration_Results_Promise) Result() UseConfiguratio
 	return UseConfigurationResult_Promise{Pipeline: p.Pipeline.GetPipeline(0)}
 }
 
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-	"f:=\x96+\x02#[\x12\x85\x13\xa2\"\x89\xb7I" +
-	"n\xf6\x03\xb8]\x8e\x8f\xe9\x9d\x05\xbd\x95K\xd1;\xf3" +
-	"\xeen/=\xddCw\x0f\xb0\x1b8\x84\xc2xl\xe4" +
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-	"M\xee\"\xe6\x8ex\\ %\x17\xadS\xd1J\x9d\xa5" +
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-	"\x1f\x98z\xfay?\x9e\xaf\xdf\xf3\xf1\xee\x8dC\x93\x9a" +
-	"\xb9\x9bj\xaeK\x02\xc8\x87k&8l\xce/\x87\x1e" +
-	"\x9e\xf5\x8f\xdb@\x9e\x8a\xe8|\xfb\xf8\x92\xf4\xa7\xf6\xb6" +
-	"\x7f\x87\x1a^\x00\x98?(\x0c\xa1\xb4S\x10\x00\xa4\x1d" +
-	"\xc2\x7f\x00:5\xbf\x7f\xe6\x8d\xf2\x1b\xc2v\x10\xa7\xc6" +
-	"\x999b.M\\\x82\xd2\xd6\x89\xc4\xbcy\xe2\x06@" +
-	"\xe7OJ\xaf\x1c\xf8\xc3=?#f.b\x06\x9c\xff" +
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-	"\xd5>\x10\x98\xf5\xff\x10F#\xa4\xf4e\x0c\xa5\x8b\xb9" +
-	"$yK\x1d\x8fr\x03\xc15}e6\x056\x9d\x16" +
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-	"\x10\x1e\xb6\x97\x0e{\x80G\xf9\xd1\x98*\xf7\x9b\x00\xf2" +
-	"\xc3<\xca\x878D_\x93O\x1c\x00\x90\x0f\xf1(?" +
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-	"|\x9a\xba\x02\xf1e\x0a\xa9\x9f\xf3(\xbf\xca\xa1X\x93" +
-	"Hc\x0d\x80x\x86\xacs\x9aG\xf9\x8d/B\xab\x82" +
-	"fT\x8a\xbd\x9a\x02\x19\x93\x15;\x16\x86t\xbdR\xca" +
-	"\x99l\xbd\x8aF\xc5j\xb1mV\x12\xca\xb6\x15$\x9e" +
-	"\xa4\xad\xf4Y8\x050\xc7#\xa6\xa2R\x12\x90\x88\xe1" +
-	"\x9eh\xb2\xe2*fZ*o\xe8a\xeePu\x9b\xe9" +
-	"\xf6R\x05\x84\x1e\xa6\x85\xd4q\xb0\xa5\xd3\x8f\x10\x8a\x0f" +
-	"?\xd8\x8d\x08\x0f\xb1\x8f`|\x9a\xe3\xf8J\\D\xba" +
-	"i\xe6Q^\xca\xe1t\xfc\x9c\xc8\xa4\xc7\x8eN\x00\xb9" +
-	"\x9dG\xb9\x8b\xc3\xe9\xdco\x89L\x9a\x94\xbb#4O" +
-	"\xf6\xdbv\x19SQ\x89\xe9\x1b{\x03\xeb\xb1\x8c\xc2Z" +
-	"\x06H\xa0\x18\xd6;\xfe\xd7~\x1f\xa4\x81\xd7\x8a\x98\x8a" +
-	"Z\xc4*O\xe1\xbf(Cg\xa9\x1e0L7\x01F" +
-	"\xe9\xe8\xe6H\x88\xc0;:\xba#\x09D\xae\xd9\x13K" +
-	"\xee\x89\xee\x9f)(\x15\x8b\x8d,-Zzm\xe0\x99" +
-	"\x19\xa2\xa9\xd5oT\xb4b'\x03\xc16\x07\x11\x81C" +
-	"\x1c\x1fc\x17\x1a\xed1\xc5{n<v\xda\x0c\xb3f" +
-	"w<k\xfa\xea_I\xea\xef\xf2P\xc2\xd1\x08\xa5\xf4" +
-	"v\x03x\xcb\x0e\xaf\xeb\x11s\x86\xeb\x9c\x02p(\x00" +
-	":\x95\xb2e\x9bL)\x01\x86\xdeF\xfcS.#\x19" +
-	"U\x81bNI\xbaq\xff\xbb\x94\xfa/?\x87{\xf9" +
-	"tD\x06?\x10K\xa8\x05\x7f5\xba\xcb\xdb\x0c]\xb8" +
-	"\xec*\xcdG0/\x87\xcc\xf3k\x02* \x83\xe4:" +
-	"\x9b\x92\xc1\xb5<\xca7\xc6\x93\xeb\\R\xd1\xf5<\xca" +
-	"\xb7p(0\x93\xf2d\xd8\xe9{\x87n\xb1\xbc\x8a\x14" +
-	"S\xd1\x18\xe7\xe2\xd7\x89\x15\xeb\xaa\xa1\x8fr\xc3\xc6(" +
-	"\\B\x13v\xdc\x1c\xb3k`\xc2e=\x91]\x85\xb5" +
-	"l0\xb0R\x86\x95\x145B#\xdf\xb8- |#" +
-	"\xe2\x19\xb7\xa8\xf5\x93\xbf\x97\xfa\xb3\x9e\xb5\xe8\x92\xe9\xf0" +
-	"\x92\x9b\x87\x01\xe4;y\x94\xef\x89]r\x07\xf5\x08\xf7" +
-	"\xf0(?\x10\xbb\xe4\x1eR\xe2.\x1e\xe5}\xb1\xec\xb9" +
-	"\x97\x0c\xbc\x8fG\xf9q\x0e1\xe1A\xfeA\x82\xfc\xc7" +
-	"y\x94\x8fr.`\xb7\xb7\xb4\x19:\xfa\x97\xb0\x00\xc2" +
-	">\xa1\x9f)\xa6\xdd\xc3\x14\xb4;t\x9b\x99\xeb\x15\xd4" +
-	"\x02H\xd8b\xab%fT\xec\x10\"J\xcaF\xb7\xb0" +
-	"\xc2b\xbb\xb7JPl\x0bk\x81\xc3Z\x8aH\x8b\x99" +
-	"m&+\"YC\xd1r\x0ao\xf7_\x8a\x82F\x82" +
-	"xr\x0c\xf5PY\xb6\x89G\xf9;\x04%\x18\x9b&" +
-	"\x89w\x0d\x00\xe7\"\x09\xc9\xbc\xae5^Zp^\x9a" +
-	"\x8b\xb7ZnB\x9c\x00 n%\xedl\xe7Q\xde\xc5" +
-	"\x05Wk7 \xebEh\xb5\xa9\xfdVf\x0b\xa1\xa6" +
-	"\xca\"y\xfdzAEC\xefr\x15\x85\x91\xa6\x0aF" +
-	"\xa9l\x92+\xab\x86.W\x14M\xe5\xed\xc1p\xe1\xb8" +
-	"\xba H\xf2ByE9\xe3\x1a\x8b\x94qK\xa0\x0c" +
-	"\xe9[\xb8\x04 \xbf\x1ay\xcc\xf7c\xe4.\x12\xc3V" +
-	"\x80\xfc\x1a\xa2k\x18y\x8c\xa4\xe2T\x80|\x91\xe8e" +
-	"\x0c;P\xa9\x84O\x02\xe4\xcbD\xde\x84Q\xa9 \x0d" +
-	"\xba\xdbo$\xfav\x8c\xaa\x05i+\xce\x01\xc8o\"" +
-	"\xfa\x03D\x9f\xc0\xb9\x9a\x94\xf6\xe0\x00@\xfe~\xa2?" +
-	"Lt\xa1&M\xed\xb6\xf4\x10\x9a\x00\xf9}D\x7f\x9c" +
-	"\xe8\x13\x1b\xd28\x11@:\xe8\xd2\x1f%\xfaa\xa2\xd7" +
-	"^\x95\xc6Z\x00\xe9\x87\xb8\x0d \x7f\x88\xe8O\x13}" +
-	"\x12\xa6q\x12\x80t\x0c\x1f\x04\xc8?M\xf4\x9f\x10}" +
-	"\xf2\x844N\x06\x90^t\xefs\x9c\xe8'\x88^\x97" +
-	"Hc\x1d\x80\xf4S<\x00\x90?A\xf4\xd3\x18\xe2]" +
-	"G1\x0e\xbb\xe4njTv\xf0\x86\x15\x9a\x9c\xf9\x1d" +
-	"(z9!g$\xa9\x05\xc5d4*\x06\xc4$\xa0" +
-	"S6\x0cm\xf9H8\xbfX\xe5\xe3\xbb\x0b$\x0d\xbd" +
-	"\xa3\x18\xc6\x9f\xe7dK\x0d\xc8\x14\x14\xad\xa3\x1c\xd5B" +
-	"VK\xc56*e\xc8\x14\x15\x9b\x15\xc3\x84lV\xf4" +
-	"\xc5\xa6Q\xeaBf\x96T]\xd1 \xfc2\x9e\xcf%" +
-	"+\x15\xb5\x18\xee=n\x01\x17\xba'W\xed\x9e\x99r" +
-	"S\x97\xd2W5-\x98\x13a}\x08]so\x8e\xa0" +
-	">\x19\x0f\xa9\xcczE\xab\xb0K\xa9\xec\xc6\xed?:" +
-	"\xb3^\xffr\xb165\x98m]\xbc4_Y\x95F" +
-	"\xbd\xe46j4\xd2\x1a\x09\x1b\xcaj\xfa\xe3\x92v." +
-	"J`\x81Iz\xfd6\x142\xb4w\xcc9\xc2\xe1\xa3" +
-	"\xef\x1c\x97\xaa\x89>f{\xbf:\xf4^\x83r\xbd\xa0" +
-	"\x94\xac/\xb9\xba\x93Y\xc9K\xd1b4N\xbcx2" +
-	"n\xef\xea\xcaE\x13\x09\xdeC\xf2\x1bC\xf0j\xc1N" +
-	"\x80|3E\xe7R\x0cu(u\xb8 \xd2N\xe4." +
-	"\x8cJXIv\xc1\"G\xf4\xd5\x1859\xd27\xdd" +
-	" \x8f00\xd1\xe2\x81\x17s\xb7\x0f\xb1N\xacA\x0f" +
-	"\xbcJ\xee\xfe\x1a\xd17\xc6\xc1\xab\x82\xc3#\xc0N\xe0" +
-	"=\xf0\xda\xea\x82\xcev\xa2\xefr\xc1+\xe1\x81\xd7N" +
-	"|\x0a \xbf\x8b\xe8\xfb\\\xf0\xaa\xf1\xc0k/>;" +
-	"\x02\xec&M\xf0\xc0\xeb\xa0\xcb\xff8\xd1\x8f\xba\xe0\xd5" +
-	"\xea\x81\xd7\x11\x17\xec\x0e\x13\xfd8\x81T\xc5\xd4\xf2\xb6" +
-	"\xa9\xea\x80}Ql\x14\xca\xdf`\xac\xdc\x02IM]" +
-	"\xcf\xc2\xc4RT\x15maE\xd1 \x93\xb7\x95\xc2\xda" +
-	"\xa8N\xd7\xacvE/Z\xd8\xaf\xace\x94\x8e\x84x" +
-	"\xe2\xb65k\x153\xd5^\xc0\xa8\xb2\x0f\x0b\x99d\xce" +
-	"0\xaa\xeb\x1b\xb7@d\xa6\x87p\xe1\xb7\x92\xb2\xb1\xa3" +
-	"\xa8\xb16\x0c\xca\x19^\x8f\xd2\xa1J_\x0c]G\xaf" +
-	"\xc6\xe8R3#\x8b\x87\xb2\xdf+\x04EHW\xb6\xaa" +
-	"\xba`\x1b\xcb\xac`\xb7\x19\xa8\xdb\xaa^a\xa36(" +
-	"\xf4W\xf4\xb5\xac\xb8\x08\xf5\x82QT\xf5>\x18\xd5\xa4" +
-	"\xf0_4\x08\x8aU]n4c\xec!M\x9c\xdd\x04" +
-	"\x9c\x0b]TC\x88MQ\xab\x9f-\xb8\xab\xb2&S" +
-	"\xacX\x97:\xcei\xfe\xe0\xd2\x0b2\xaf\xad\xaf\x01\x08" +
-	"_\x9d0\x98\xdc\x8bG\x86\x80\x13\x9f\x100z\xf0\xc0" +
-	"\xe0}C|\xc8\x04N\xdc# \x17\xbe\x06b\xf0\x92" +
-	"'\xee\x18\x06N\xbcK@>|\xa1\xc3`,.\x0e" +
-	"\xb6\x02'\x96\x04L\x84\xaf\x95\x18\xcc\xd4E\x85\xea\xa4" +
-	"o\x0aX\x13>\xfda\xf0p#.\xdb\x06\x9c\xb8H" +
-	"p\x82v\x08\xb2\x9e\x18\xcd\xe8\x04\x80\x01\x19\x172\x9a" +
-	"\xd1\x09FI\x18\xb4M\x00\xcd\xb8\xc5\x87\xe7ft\x82" +
-	"a*$\x0b\x8a\xcd\x9a\xa9\xd7\xf4>\xa2\x0f\xde\xd0\x8c" +
-	"\xf1!%\xffE\x0d\xce\xd8\x85rkT\xcc\x05\x00\xbc" +
-	"u8\xaa\xe5\xc2\xa6r\xe7\x93\xf1:\xd9\x9f\x8d\xec\xdd" +
-	"\xe6OV\x8e\xc6f#G\xa8x>\xca\xa3\xfc\x0b." +
-	"\xaa\x0c\x02\x9f\x0e\xe6zh\x98A\x97;\xcex\xcf\xf7" +
-	"|\xbf\x86\xad\x1e\xf29E\xa3\xdf\xadq\xd1\xdb\xca\x82" +
-	"(\x1d\xc4'\x7fSb\x93?\x0c\xfakaD\xf6\x88" +
-	"\xcf\x01\xa7\\\xa4Y\x8bw\x8bn:K\xb8.\x19\xbc" +
-	"sb\xf0$-\x8a\xe4Z\xf5\x82\x13t\x94\x18\xe4B" +
-	"\xa82\xd9e\xb6\xd5\x9d,\xf3\xbfI\xd6c8\x88w" +
-	"N\x92<\xd2\x13(\xdcw 6\xa7\xd3\x0c\xbf#L" +
-	".\x8f\x17\xf5\xe3\xe8\xca\xbbpP\x82'i1\xed?" +
-	"-\xdc\xffX\xa3?\\;\x1e+v\x9ei\xf4\x1d\xe8" +
-	"\x85X\x9f\xf6\xdc\x12\x00\xf9\xb87q\x0b\x1e}\xce\x90" +
-	"\xa3\xbe\xca\xa3\xfcv\xcc\xfd\xde$\xc67x\x94\xdf\x8b" +
-	"\xf2\x95\xf8\x1b\xeaY\xde\xe3Q\xfe/JV\x09\xafg" +
-	"\xb9@\xfd\xe9\xc7<v\xa2\xdf?\x07/B\x153B" +
-	"o\xcd\xe8[\xaa\xea\xcc\xa2\xb2\xb4j*\x12<3\xa1" +
-	"M\x98X1\x09\xd8G\x02h\xc7\xc2X5\x1b\x0e\x89" +
-	"\x90\x99y\x8a\xe1\"Z\xe1\xf0e\xec\xb1\xec8\xaa\xcd" +
-	"\xfb\x81\xe4\xc5\x91_\x17\xc4\xba\xf4\x03\xb1\x01V\xa0X" +
-	"\xf9Y\x7f0\xb4&\xa6\xd8o\xf5D\x83f\x02\x1bc" +
-	"e\xb9\xa8\xa0\xcd\x16\x9bl]\x85\x09za0\xeaV" +
-	"\xa9_+X+\xb1L\x15\xf4b\x93e\xd7UX\x9c" +
-	"!x\\\x00A5\x8a\xa3^\x15\xc6\xa8\x12oc=" +
-	"y\xa3\xb0\x96\xd9#\x1e]\xaa\x1e\x06;\xa3\x97\x85\xf0" +
-	"]\xb03\xfe.\xe8C\xd4\xba\x81h\xe6\x1dB\xd4\xe0" +
-	"p\xd4\xea\x8e]\x16\xfc\xdfd\xf2/\xf56FE\xb1" +
-	"p)\x05c\xf8';_r\x02\x7f\xa9\xf5}\xf4\xe2" +
-	"{\x99S+\x08q\x03c\x7f\xd1A\x87p\xfe\xe6\xff" +
-	"\x13\x00\x00\xff\xff<\x08\xe4z"
+const schema_db8274f9144abc7e = "x\xda\xccz}\x90\x14uz\xff\xf3t\xcf\xd2\xbb\xb0" +
+	"\xcbL\xdbc\xfdv)\xf67\xc7\x8bQ8!\"G" +
+	"\xa2\x9b\xe4\xf6\x0d\xb8]\x0ea{g\x17u\xe5R\xf6" +
+	"\xce|w\xb6a\xa6{\xe8\xee\x01\x96\xe0\xf1R\x10e" +
+	"\x03'x\x90\x02\x0f\xaf\x00\x8f\xf8\x12\xbd\x13\x0f+\xa7" +
+	"\x11K\x93\xab\xa89\x13\xe5\x82)\xbd\x98\x8a\x11\xa8T" +
+	"\xac\xb3<\xd1\x94eJ\xed\xd4\xf3\xed\xd7\x1d\x96\x05L" +
+	"R\x95\x7f`\xea\xe9\xe7\xfb\xf2\xbc}\x9e\x97\xef\xde\xf4" +
+	"\xe3\xc9m\xc2\x82\x9a\xeb\x93\x00\xeaS5\x93\\6\xf7" +
+	"\x97\x9b\x8e\\\xf7\xd7\xdbA\x9d\x86\xe8~\xf7\xf9e\xe9" +
+	"\xcf\x9c\xed\xff\x045\xa2\x04\xb0pD\xda\x84\xca\x1eI" +
+	"\x02PvI\xff\x06\xe8\xd6\xfc\xd6\x9b\xef\x96\xdf\x95v" +
+	"\x80<-\xce,\x10s\xa9v\x19*\xdbj\x89\xf9\x9e" +
+	"\xda\x0d\x80\xee\xef\x97^?\xf6;\x07~A\xccB\xc4" +
+	"\x0c\xb8\xf0|\xed&T>\xe3\x9c\xffQ\xbb\x12\xd0\xfd" +
+	"x\x7f\xe3\x9f\x1f\xfd\xfbWv\x82|=\x82\x7fvC" +
+	"\xdd\xaf\x10P\x99Q\xf7\x13@\xf7\x1fn\xda|\xee\xee" +
+	"\x8f\xf7\xdd7\xf6\xdc\x04\xf1\xbdT7\x8a\xca\xdbu\x12" +
+	"\x88\xeeCw\xa5\xff\x16\x8f|\xba\x0f\xe4\x1bh\x1b\xa4" +
+	"\xcf\xcf\xd4M\x16\x00\x95\xbf\xabk\x05t_\xbf\xf1\xf9" +
+	"\xe7\xf6\xfe\xf4\xde\x1f\x80z=\"x\xeb?\xa8\xfbO" +
+	":\x07'\x13\xc3G?\xfaz\xe2\xc9\xd7\xaf\xf9!g" +
+	"p\x8f\x9f\xbe\xfd\xe9\xbd?\xfd\xda\xfb\xd0/H\x98\x00" +
+	"X8g\xb2E\xbc\x8b&\x93.\xf6\xbfujEi" +
+	"\xdf\x83\xc7\xbcK\xf3\xbd\xae\x9d\"\x08\x90pwt\x7f" +
+	"Z\xea\x7f8\xfb\xb0/N\x0d}\xaa\x9br\x01\x01\x17" +
+	"6O\xc9 \xa0\xbb\xe8W\xe7W\xde\xf6\xf4\xd0#>" +
+	"\x07\xbf\xe9\xad\xf5O\xd3\xe6\xdd\xf5t\x91W6\xa4v" +
+	"\xb7\xff\xee\xfd\x8fT\x9b\x85\xefU\xaa\x1fEeg=" +
+	"\xfd\xdcV\x7f;\xed7z\xeb\xa9U\x1f\xff\xb1\xfd8" +
+	"\xa8\xf30\xe1\xfe|\xd7\xd9\xf5s\x1e\x1bz\x99\xdf[" +
+	"\x04X\xf8Y\xc3/i\xeb\x86\xa9\xa4\xcb\x86\xbf\x9c\xbb" +
+	"\xe2\xfes\xcbO\xd0\xd61\xbbx\x97xrj\x0b*" +
+	"\xa7\xa6\x92i\x9e\xe5\xdco\xdc\xb8\xea\x85\x17\x9e*\x9c" +
+	"\xa8\xbe\x087\xf9\x9d\xc9e\xa8\x94\x92\xc4\xad'\x89\xfb" +
+	"\xdan|\xe7\xc5\x05\x89\xbf\x88\x1b\xb29\xf5>\x1d\xbe" +
+	" E\x0cw}\xfe\xcc_-\xf9\xf0\xcc\xb3q\x13\x9d" +
+	"N\x09d\xa2\xf3)\x12|`\x14K\xef\xb4\xb4\xbd\x00" +
+	"\xea\x0d\x88\xee\x9a\x03\x9b\x9d\xae\x83{\\\xe8G\x09\x05" +
+	"\xf2\x0ay\x13m\xd6$\x93\x835\x7f\xd0\xd1`|\xb8" +
+	"\xfd\xc5*o\xe4\xa7V\xe4e\xa8\xec\x92\xe9j;\xe5" +
+	"\x9f\x00~\xfa\xf8\xbd{\xbb\xcf.~Y\x9d\x86\x89j" +
+	"\xa1g\\\xb3\x09\x95E\xd7\xd0\xcf\x05\xd7p\xfb\x84\x1a" +
+	"\xacb\xe7Rk\xca\x1aT*\x0a\xfd\\\xa7p\xf6e" +
+	"w}\xff\x81\x9a\xf3\xdf\x7f\xb9Z\xa5\xe4\xe2\x0b\xefI" +
+	"[\xa8\xecK\xd3\xcf=\xe9\xff'\x02\xba\xd3\x9e\xfa\xbd" +
+	"\x1fw\xe4\xdf\xfe\xc58Q\xa444^P\x9a\x1a\xe9" +
+	"\xd7\xb5\x8d$\xe3\xd9y'\xfe\xe8\xdf\xf7\x9c>\x13\xf7" +
+	"\x94u\x8d\xdcew6\x92\xc2\xee\xfd\xfa\xc8\xa6\x15\xd7" +
+	"\x8d\xbeYm \xcey\xbcq\x14\x95S|\xbbg\xf9" +
+	"v\xc2y\xadi\xeb?~\xf3\x9d\x98\xd3\xceiz\x0f" +
+	"!\xe1\xaeXu\xd7\x9a\xba{\xce\x9e\x8d\x1f\xd4\xdc\xe4" +
+	"\x99\xae\x89\x0e:)?\xa0<\x7f\xf4\xcf\xce\xd1AR" +
+	"\xb5\xba\xd5\xa6\x01TX\x13WO\xd3#\x02\xc4\x82g" +
+	"<\xc7\xf9\xce\xf4\x16TJ\xd3\xb9\xe3L\xa7{-\xba" +
+	"\xbb\x9d\xad\xbe\xe5\x8e\xf7A\x9e&\x8e\xc1\x8a\xc7\x88\xf3" +
+	"\xd9\xe9<\x94\xa7\xdf\x8b\xca\xa9f\x09\xc0\xfd^a\xe0" +
+	"\xd5\x8f:\x8f\xfe\xa6zs.\xd0\xf1\xe6\x16T\x9e!" +
+	"\xbe\x85'\x9a\xb9}\x16.\xf8\x93\x0f\x0e<\xdc\xf9\xd1" +
+	"E\xbb\x7f\xf1\xff;Pi\xc8\xd0=\xea2\xdfRn" +
+	"\xcd\xf0\xcd\xbf\xbbx\xe5\xad3_\xba\x10\xd7\xc4\x8c\xcc" +
+	"\x05\x1e\xf9\x19\xd2\xc4\xd0-\xbf\xfe\xd6u\xdf\xfb\x9b\x0b" +
+	"U\xf6\xe3\x8c\xfd\x99\xb9\xa80\xbe\xa3F\xcc\x1f.\xfd" +
+	"\xe1\x99i\xc9i\x9fT]t\x12\xf1\xee\xcc\xacA\xe5" +
+	"\x10\xf1.<\x90y\x99.z\xc7{\x0fnh\xfd\xc1" +
+	"'\x9f\x92\\b\x15\xd0\xed\x9a1\x80\xcaC3h\xe7" +
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+	"\xa9r0-\x9e*\xa3\xc4us$D\xe0\x1d\xdd\x03" +
+	"\x91\x04\xb2\xd0\xe6\x89\xa5\x0eF\xf7\xcf\xe4\xb4\x8a\xcd\xc6" +
+	"\x16!\xedC\x0e\x88\xcc\x0aq\xd7\x1e6+\xc5|/" +
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+	"\x89\xa8\x96\x05t\x8b\x84gF\x97\xc9\xc3=\xb8\xaeG" +
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+	"\x1e\"\x03\x1f\x16Q}T@\xf4\xd3\xecq\x82\xfcG" +
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+	"\x03H\xd8\xe2\xe8%fV\x9c\x10\"J\xdaF^\x82" +
+	"a\xbe\xcb[%i\x8e\x8du `\x1dE\xa4\xcd\xac" +
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+	"\xf1\xe48\xea\xa1\x02n\xb3\x88\xea}\x04%\x18\x9b;" +
+	"\xc9;\xd7\x80\xc0\x91\x84d^\xd7\x11\x95t<!\xd6" +
+	"T5e<!N\xa2\x1a\x86\xb4\xb3CDu\xaf\x10" +
+	"\\\xad\xcb\x84V/B\xabM\xed7=[\x085u" +
+	"\x16\xc9\xeb\xd7\x0b:\x9aF\x1fW\x14F\x9a\xca\x99\xa5" +
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+	"\xae)\x8du\x00\xca\xab\xb8\x1d \xfb\x0a\xd1\xcf\x10}" +
+	"2\xa6q2\x80r\x1a\x1f\x04\xc8\x9e!\xfa\xbbD\x9f" +
+	"2)\x8dS\x00\x94\x7f\xe6\xf7y\x8b\xe8\xe7\x88^\x9f" +
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+	"\x94\xc6\x06\x00\xe5\x03.\xd7\xaf\x89^+\x848\xd8\x9d" +
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+	">\x8cK\xcf\xf9\x96\x9b\x90\xc9i\xc5\xeerT#\xd9" +
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+	"\x93W\xa2\xc5hVy\xf9\xfc\xdd\xd5\xd7\xd7\x13\x8d;" +
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+	"\xc4kJfy\xe0\x17~+i\x1b\xbb\xf3E\xd6\x89" +
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+	"Z\x96_\x82F\xce\xcc\xebF\x01.\xeak\xc4KM" +
+	"\x99b\x85\x1a\x8ff\x8c=\xd3\xc9sZ@\xe0\xd0E" +
+	"e\x87\xdc\x12M\x07Zs|U\xab\xc54;\xd6\xd8" +
+	"Np\x9a?\x15\xf5\x82\xcc\x9b\x04\xd4\x00\x84OZ\x18" +
+	"<\x0b\xc8'6\x81 ?&a\xf4\x9a\x82\xc1\xe3\x89" +
+	"\xfc\x90\x05\x82|@B!|k\xc4\xe0\x9dP\xde5" +
+	"\x0a\x82\xbcSB1|\xfe\xc3`\xe6.\x8ft\x80 " +
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+	"\x09\x1f\x161x\x15\x92o\xdb\x0e\x82\xbcDr\x83\x0e" +
+	"\x0aZ=1\xda\xd0\x0d\x00\x032\x1c2\xda\xd0\x0d\xe6" +
+	"T\x18tZ\x00m\xb8\xc5\x87\xe76t\x83I-$" +
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+	"\x85}\xe8\x9e\xc7\xe3\xa5\xb5?N9\xb4\xdd\x1f\xc6\x9c" +
+	"\x8c\x8dSNP\xbd}RD\xf5\x0d!*\x1a\x02\x9f" +
+	"\x0e\x86\x86hZAc<\xc1\xec\xd0\xf7|\xbf\xec\xad" +
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+	"\xc5\xa9\xb1\xb1\"\x06-\xb94&{\xc4\x87\x8cS/" +
+	"\xd3\xdf\xc5\x1bL\x9e\xce\x12\xdc%\x83GT\x0c\x1e\xbc" +
+	"e\x99\\\xabAr\x83&\x14\x83\\\x08U&\xbb\xca" +
+	"N\xbc\x97e\xfe;\xc9z\x1c\x07\xf1\xceI\x92Gz" +
+	"\x02\x85\xfb\xae\x89\x8d\xf6\x8a\xa6\xdfD&W\xc4\xfb\x80" +
+	"\x09t\xe5]8\xa8\xda\x93\xb4\x98\xf6\xffZ\xb8\xff\xe9" +
+	"\x99\xb1\xd1[\xe0\x7fo\x12\xf1\x0d\x11\xd5wb\xad\xdd" +
+	"\xdb\xcb\x00\xd4\xb7DT?\x89^\x94>\"G\xfdD" +
+	"\xc4\xdeX\x89.\x7fA\x8c\x9fS!\x1bOX5\xf8" +
+	"\x00@\xb6\x96\x12D\x9a'\xac\x84\x97\xb0d\x1c\x04\xc8" +
+	"\xa6\x88>=^\xa07\xe1\x00@\xb6\x91\xe8\xb3\xd1\xef" +
+	"\xc8\x83\xd7\xa8\x8a\x15\x81{\xd1,,\xd7\x8dq\xab\xbe" +
+	"\xe0\x89\x0b\x1d\x82\xcc\x8aE\xb8?\x16_\xbb\x17\xc7\xea" +
+	"\xe0p\xec\x84\xcc\xcaR\x88\xe7\xd1\x0e\xc79W1\xfd" +
+	"\x9d\xc0\x1cY?\xf8\xbc\xd8\xf3k\x89\xd80\xe0Xl" +
+	"N\x16\x18C}\xce\x9f?\xdd\x1d3\xc6w\x06\x01\xd4" +
+	"\xd5\"\xaa\xc3\x02\x07(\xb3\xbf\x9c\xd7\xd0aK-\xb6" +
+	"\xae\xc2$#7\x125\xc5\xd4\x16\xe6\xec~,SA" +
+	"\xbe\xd4b\xad\xeb*,\xce\x10\xbcv\x80\xa4\x9b\xf9\x8b" +
+	"\x9e9\xc6\xa9,og\x83Y3\xb7\x969c^\x81" +
+	"\xaa^*{\xa3\xa7\x8e\xf0\xa1\xb27\xfeP\xe9\xc3\xda" +
+	":r\xf0\xb2\x88\xea\xe6\x18\xac\x8d\x8cF\x1d\xf5\xf8\xa5" +
+	"\xc4\xffL\xf6\xffJ\x8fuTHKWRd\x86\x7f" +
+	"D\xf4\x15\x07\xfdW\xda\x13DO\xd0W9\x1c\x83\x10" +
+	"k0\xf6'&t\x88\xe0o\xfe_\x01\x00\x00\xff\xff" +
+	"\x86\xbe\xf5t"
 
 func init() {
 	schemas.Register(schema_db8274f9144abc7e,

vendor/github.com/certifi/gocertifi/.travis.yml

@@ -0,0 +1,13 @@
+---
+language: go
+go:
+- tip
+- 1.12.x
+- 1.11.x
+- 1.10.x
+- 1.9.x
+- 1.8.x
+sudo: false
+
+# Forks will use that path for checkout
+go_import_path: github.com/certifi/gocertifi

vendor/github.com/certifi/gocertifi/LICENSE

@@ -1,3 +1,373 @@
-This Source Code Form is subject to the terms of the Mozilla Public License,
-v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain
-one at http://mozilla.org/MPL/2.0/.
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in 
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.

vendor/github.com/certifi/gocertifi/README.md

@@ -9,14 +9,14 @@ This is the same CA bundle that ships with the
 Golang specific port of [certifi](https://github.com/kennethreitz/certifi). The
 CA bundle is derived from Mozilla's canonical set.
 
-## Usage
+## Usage
 
 You can use the `gocertifi` package as follows:
 
 ```go
 import "github.com/certifi/gocertifi"
 
-cert_pool, err := gocertifi.CACerts()
+certPool, err := gocertifi.CACerts()
 ```
 
 You can use the returned `*x509.CertPool` as part of an HTTP transport, for example:
@@ -29,8 +29,22 @@ import (
 
 // Setup an HTTP client with a custom transport
 transport := &http.Transport{
-	TLSClientConfig: &tls.Config{RootCAs: cert_pool},
+  Proxy: ProxyFromEnvironment,
+  DialContext: (&net.Dialer{
+    Timeout:   30 * time.Second,
+    KeepAlive: 30 * time.Second,
+    DualStack: true,
+  }).DialContext,
+  ForceAttemptHTTP2:     true,
+  MaxIdleConns:          100,
+  IdleConnTimeout:       90 * time.Second,
+  TLSHandshakeTimeout:   10 * time.Second,
+  ExpectContinueTimeout: 1 * time.Second,
 }
+// or, starting with go1.13 simply use:
+// transport := http.DefaultTransport.(*http.Transport).Clone()
+
+transport.TLSClientConfig = &tls.Config{RootCAs: certPool}
 client := &http.Client{Transport: transport}
 
 // Make an HTTP request using our custom transport

vendor/github.com/certifi/gocertifi/certifi.go

@@ -1,9 +1,12 @@
+// Code generated by go generate; DO NOT EDIT.
+// 2020-02-11 10:00:50.717122 -0800 PST m=+0.664468880
+// https://mkcert.org/generate/
+
 package gocertifi
 
-import (
-	"crypto/x509"
-	"errors"
-)
+//go:generate go run gen.go "https://mkcert.org/generate/"
+
+import "crypto/x509"
 
 const pemcerts string = `
 
@@ -334,36 +337,6 @@ OCiNUW7dFGdTbHFcJoRNdVq2fmBWqU2t+5sel/MN2dKXVHfaPRK34B7vCAas+YWH
 QMAJKOSLakhT2+zNVVXxxvjpoixMptEmX36vWkzaH6byHCx+rgIW0lbQL1dTR+iS
 -----END CERTIFICATE-----
 
-# Issuer: CN=Visa eCommerce Root O=VISA OU=Visa International Service Association
-# Subject: CN=Visa eCommerce Root O=VISA OU=Visa International Service Association
-# Label: "Visa eCommerce Root"
-# Serial: 25952180776285836048024890241505565794
-# MD5 Fingerprint: fc:11:b8:d8:08:93:30:00:6d:23:f9:7e:eb:52:1e:02
-# SHA1 Fingerprint: 70:17:9b:86:8c:00:a4:fa:60:91:52:22:3f:9f:3e:32:bd:e0:05:62
-# SHA256 Fingerprint: 69:fa:c9:bd:55:fb:0a:c7:8d:53:bb:ee:5c:f1:d5:97:98:9f:d0:aa:ab:20:a2:51:51:bd:f1:73:3e:e7:d1:22
------BEGIN CERTIFICATE-----
-MIIDojCCAoqgAwIBAgIQE4Y1TR0/BvLB+WUF1ZAcYjANBgkqhkiG9w0BAQUFADBr
-MQswCQYDVQQGEwJVUzENMAsGA1UEChMEVklTQTEvMC0GA1UECxMmVmlzYSBJbnRl
-cm5hdGlvbmFsIFNlcnZpY2UgQXNzb2NpYXRpb24xHDAaBgNVBAMTE1Zpc2EgZUNv
-bW1lcmNlIFJvb3QwHhcNMDIwNjI2MDIxODM2WhcNMjIwNjI0MDAxNjEyWjBrMQsw
-CQYDVQQGEwJVUzENMAsGA1UEChMEVklTQTEvMC0GA1UECxMmVmlzYSBJbnRlcm5h
-dGlvbmFsIFNlcnZpY2UgQXNzb2NpYXRpb24xHDAaBgNVBAMTE1Zpc2EgZUNvbW1l
-cmNlIFJvb3QwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCvV95WHm6h
-2mCxlCfLF9sHP4CFT8icttD0b0/Pmdjh28JIXDqsOTPHH2qLJj0rNfVIsZHBAk4E
-lpF7sDPwsRROEW+1QK8bRaVK7362rPKgH1g/EkZgPI2h4H3PVz4zHvtH8aoVlwdV
-ZqW1LS7YgFmypw23RuwhY/81q6UCzyr0TP579ZRdhE2o8mCP2w4lPJ9zcc+U30rq
-299yOIzzlr3xF7zSujtFWsan9sYXiwGd/BmoKoMWuDpI/k4+oKsGGelT84ATB+0t
-vz8KPFUgOSwsAGl0lUq8ILKpeeUYiZGo3BxN77t+Nwtd/jmliFKMAGzsGHxBvfaL
-dXe6YJ2E5/4tAgMBAAGjQjBAMA8GA1UdEwEB/wQFMAMBAf8wDgYDVR0PAQH/BAQD
-AgEGMB0GA1UdDgQWBBQVOIMPPyw/cDMezUb+B4wg4NfDtzANBgkqhkiG9w0BAQUF
-AAOCAQEAX/FBfXxcCLkr4NWSR/pnXKUTwwMhmytMiUbPWU3J/qVAtmPN3XEolWcR
-zCSs00Rsca4BIGsDoo8Ytyk6feUWYFN4PMCvFYP3j1IzJL1kk5fui/fbGKhtcbP3
-LBfQdCVp9/5rPJS+TUtBjE7ic9DjkCJzQ83z7+pzzkWKsKZJ/0x9nXGIxHYdkFsd
-7v3M9+79YKWxehZx0RbQfBI8bGmX265fOZpwLwU8GUYEmSA20GBuYQa7FkKMcPcw
-++DbZqMAAb3mLNqRX6BGi01qnD093QVG/na/oAo85ADmJ7f/hC3euiInlhBx6yLt
-398znM/jra6O1I7mT1GvFpLgXPYHDw==
------END CERTIFICATE-----
-
 # Issuer: CN=AAA Certificate Services O=Comodo CA Limited
 # Subject: CN=AAA Certificate Services O=Comodo CA Limited
 # Label: "Comodo AAA Services root"
@@ -809,36 +782,6 @@ vEsXCS+0yx5DaMkHJ8HSXPfqIbloEpw8nL+e/IBcm2PN7EeqJSdnoDfzAIJ9VNep
 +OkuE6N36B9K
 -----END CERTIFICATE-----
 
-# Issuer: CN=Class 2 Primary CA O=Certplus
-# Subject: CN=Class 2 Primary CA O=Certplus
-# Label: "Certplus Class 2 Primary CA"
-# Serial: 177770208045934040241468760488327595043
-# MD5 Fingerprint: 88:2c:8c:52:b8:a2:3c:f3:f7:bb:03:ea:ae:ac:42:0b
-# SHA1 Fingerprint: 74:20:74:41:72:9c:dd:92:ec:79:31:d8:23:10:8d:c2:81:92:e2:bb
-# SHA256 Fingerprint: 0f:99:3c:8a:ef:97:ba:af:56:87:14:0e:d5:9a:d1:82:1b:b4:af:ac:f0:aa:9a:58:b5:d5:7a:33:8a:3a:fb:cb
------BEGIN CERTIFICATE-----
-MIIDkjCCAnqgAwIBAgIRAIW9S/PY2uNp9pTXX8OlRCMwDQYJKoZIhvcNAQEFBQAw
-PTELMAkGA1UEBhMCRlIxETAPBgNVBAoTCENlcnRwbHVzMRswGQYDVQQDExJDbGFz
-cyAyIFByaW1hcnkgQ0EwHhcNOTkwNzA3MTcwNTAwWhcNMTkwNzA2MjM1OTU5WjA9
-MQswCQYDVQQGEwJGUjERMA8GA1UEChMIQ2VydHBsdXMxGzAZBgNVBAMTEkNsYXNz
-IDIgUHJpbWFyeSBDQTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBANxQ
-ltAS+DXSCHh6tlJw/W/uz7kRy1134ezpfgSN1sxvc0NXYKwzCkTsA18cgCSR5aiR
-VhKC9+Ar9NuuYS6JEI1rbLqzAr3VNsVINyPi8Fo3UjMXEuLRYE2+L0ER4/YXJQyL
-kcAbmXuZVg2v7tK8R1fjeUl7NIknJITesezpWE7+Tt9avkGtrAjFGA7v0lPubNCd
-EgETjdyAYveVqUSISnFOYFWe2yMZeVYHDD9jC1yw4r5+FfyUM1hBOHTE4Y+L3yas
-H7WLO7dDWWuwJKZtkIvEcupdM5i3y95ee++U8Rs+yskhwcWYAqqi9lt3m/V+llU0
-HGdpwPFC40es/CgcZlUCAwEAAaOBjDCBiTAPBgNVHRMECDAGAQH/AgEKMAsGA1Ud
-DwQEAwIBBjAdBgNVHQ4EFgQU43Mt38sOKAze3bOkynm4jrvoMIkwEQYJYIZIAYb4
-QgEBBAQDAgEGMDcGA1UdHwQwMC4wLKAqoCiGJmh0dHA6Ly93d3cuY2VydHBsdXMu
-Y29tL0NSTC9jbGFzczIuY3JsMA0GCSqGSIb3DQEBBQUAA4IBAQCnVM+IRBnL39R/
-AN9WM2K191EBkOvDP9GIROkkXe/nFL0gt5o8AP5tn9uQ3Nf0YtaLcF3n5QRIqWh8
-yfFC82x/xXp8HVGIutIKPidd3i1RTtMTZGnkLuPT55sJmabglZvOGtd/vjzOUrMR
-FcEPF80Du5wlFbqidon8BvEY0JNLDnyCt6X09l/+7UCmnYR0ObncHoUW2ikbhiMA
-ybuJfm6AiB4vFLQDJKgybwOaRywwvlbGp0ICcBvqQNi6BQNwB6SW//1IMwrh3KWB
-kJtN3X3n57LNXMhqlfil9o3EXXgIvnsG1knPGTZQIy4I5p4FTUcY1Rbpsda2ENW7
-l7+ijrRU
------END CERTIFICATE-----
-
 # Issuer: CN=DST Root CA X3 O=Digital Signature Trust Co.
 # Subject: CN=DST Root CA X3 O=Digital Signature Trust Co.
 # Label: "DST Root CA X3"
@@ -1257,36 +1200,6 @@ t0QmwCbAr1UwnjvVNioZBPRcHv/PLLf/0P2HQBHVESO7SMAhqaQoLf0V+LBOK/Qw
 WyH8EZE0vkHve52Xdf+XlcCWWC/qu0bXu+TZLg==
 -----END CERTIFICATE-----
 
-# Issuer: CN=Deutsche Telekom Root CA 2 O=Deutsche Telekom AG OU=T-TeleSec Trust Center
-# Subject: CN=Deutsche Telekom Root CA 2 O=Deutsche Telekom AG OU=T-TeleSec Trust Center
-# Label: "Deutsche Telekom Root CA 2"
-# Serial: 38
-# MD5 Fingerprint: 74:01:4a:91:b1:08:c4:58:ce:47:cd:f0:dd:11:53:08
-# SHA1 Fingerprint: 85:a4:08:c0:9c:19:3e:5d:51:58:7d:cd:d6:13:30:fd:8c:de:37:bf
-# SHA256 Fingerprint: b6:19:1a:50:d0:c3:97:7f:7d:a9:9b:cd:aa:c8:6a:22:7d:ae:b9:67:9e:c7:0b:a3:b0:c9:d9:22:71:c1:70:d3
------BEGIN CERTIFICATE-----
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------END CERTIFICATE-----
-
 # Issuer: CN=Cybertrust Global Root O=Cybertrust, Inc
 # Subject: CN=Cybertrust Global Root O=Cybertrust, Inc
 # Label: "Cybertrust Global Root"
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 -----END CERTIFICATE-----
 
+# Issuer: CN=EC-ACC O=Agencia Catalana de Certificacio (NIF Q-0801176-I) OU=Serveis Publics de Certificacio/Vegeu https://www.catcert.net/verarrel (c)03/Jerarquia Entitats de Certificacio Catalanes
+# Subject: CN=EC-ACC O=Agencia Catalana de Certificacio (NIF Q-0801176-I) OU=Serveis Publics de Certificacio/Vegeu https://www.catcert.net/verarrel (c)03/Jerarquia Entitats de Certificacio Catalanes
+# Label: "EC-ACC"
+# Serial: -23701579247955709139626555126524820479
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
 # Issuer: CN=Hellenic Academic and Research Institutions RootCA 2011 O=Hellenic Academic and Research Institutions Cert. Authority
 # Subject: CN=Hellenic Academic and Research Institutions RootCA 2011 O=Hellenic Academic and Research Institutions Cert. Authority
 # Label: "Hellenic Academic and Research Institutions RootCA 2011"
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 -----END CERTIFICATE-----
 
-# Issuer: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5 O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
-# Subject: CN=TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5 O=TÜRKTRUST Bilgi İletişim ve Bilişim Güvenliği Hizmetleri A.Ş.
-# Label: "TÜRKTRUST Elektronik Sertifika Hizmet Sağlayıcısı H5"
-# Serial: 156233699172481
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------BEGIN CERTIFICATE-----
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------END CERTIFICATE-----
-
-# Issuer: CN=Certinomis - Root CA O=Certinomis OU=0002 433998903
-# Subject: CN=Certinomis - Root CA O=Certinomis OU=0002 433998903
-# Label: "Certinomis - Root CA"
-# Serial: 1
-# MD5 Fingerprint: 14:0a:fd:8d:a8:28:b5:38:69:db:56:7e:61:22:03:3f
-# SHA1 Fingerprint: 9d:70:bb:01:a5:a4:a0:18:11:2e:f7:1c:01:b9:32:c5:34:e7:88:a8
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------BEGIN CERTIFICATE-----
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------END CERTIFICATE-----
-
 # Issuer: CN=OISTE WISeKey Global Root GB CA O=WISeKey OU=OISTE Foundation Endorsed
 # Subject: CN=OISTE WISeKey Global Root GB CA O=WISeKey OU=OISTE Foundation Endorsed
 # Label: "OISTE WISeKey Global Root GB CA"
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 -----END CERTIFICATE-----
 
-# Issuer: CN=Certplus Root CA G1 O=Certplus
-# Subject: CN=Certplus Root CA G1 O=Certplus
-# Label: "Certplus Root CA G1"
-# Serial: 1491911565779898356709731176965615564637713
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------BEGIN CERTIFICATE-----
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-# Label: "OpenTrust Root CA G2"
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-# Issuer: CN=OpenTrust Root CA G3 O=OpenTrust
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-# Label: "OpenTrust Root CA G3"
-# Serial: 1492104908271485653071219941864171170455615
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 # Issuer: CN=ISRG Root X1 O=Internet Security Research Group
 # Subject: CN=ISRG Root X1 O=Internet Security Research Group
 # Label: "ISRG Root X1"
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+# Subject: CN=OISTE WISeKey Global Root GC CA O=WISeKey OU=OISTE Foundation Endorsed
+# Label: "OISTE WISeKey Global Root GC CA"
+# Serial: 44084345621038548146064804565436152554
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=GTS Root R1 O=Google Trust Services LLC
+# Subject: CN=GTS Root R1 O=Google Trust Services LLC
+# Label: "GTS Root R1"
+# Serial: 146587175971765017618439757810265552097
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=GTS Root R2 O=Google Trust Services LLC
+# Subject: CN=GTS Root R2 O=Google Trust Services LLC
+# Label: "GTS Root R2"
+# Serial: 146587176055767053814479386953112547951
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=GTS Root R3 O=Google Trust Services LLC
+# Subject: CN=GTS Root R3 O=Google Trust Services LLC
+# Label: "GTS Root R3"
+# Serial: 146587176140553309517047991083707763997
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+# Issuer: CN=GTS Root R4 O=Google Trust Services LLC
+# Subject: CN=GTS Root R4 O=Google Trust Services LLC
+# Label: "GTS Root R4"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=UCA Global G2 Root O=UniTrust
+# Subject: CN=UCA Global G2 Root O=UniTrust
+# Label: "UCA Global G2 Root"
+# Serial: 124779693093741543919145257850076631279
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=UCA Extended Validation Root O=UniTrust
+# Subject: CN=UCA Extended Validation Root O=UniTrust
+# Label: "UCA Extended Validation Root"
+# Serial: 106100277556486529736699587978573607008
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=Certigna Root CA O=Dhimyotis OU=0002 48146308100036
+# Subject: CN=Certigna Root CA O=Dhimyotis OU=0002 48146308100036
+# Label: "Certigna Root CA"
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=emSign Root CA - G1 O=eMudhra Technologies Limited OU=emSign PKI
+# Subject: CN=emSign Root CA - G1 O=eMudhra Technologies Limited OU=emSign PKI
+# Label: "emSign Root CA - G1"
+# Serial: 235931866688319308814040
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=emSign ECC Root CA - G3 O=eMudhra Technologies Limited OU=emSign PKI
+# Subject: CN=emSign ECC Root CA - G3 O=eMudhra Technologies Limited OU=emSign PKI
+# Label: "emSign ECC Root CA - G3"
+# Serial: 287880440101571086945156
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+-----BEGIN CERTIFICATE-----
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+# Issuer: CN=emSign Root CA - C1 O=eMudhra Inc OU=emSign PKI
+# Subject: CN=emSign Root CA - C1 O=eMudhra Inc OU=emSign PKI
+# Label: "emSign Root CA - C1"
+# Serial: 825510296613316004955058
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+-----BEGIN CERTIFICATE-----
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+
+# Issuer: CN=emSign ECC Root CA - C3 O=eMudhra Inc OU=emSign PKI
+# Subject: CN=emSign ECC Root CA - C3 O=eMudhra Inc OU=emSign PKI
+# Label: "emSign ECC Root CA - C3"
+# Serial: 582948710642506000014504
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+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+
+# Issuer: CN=Hongkong Post Root CA 3 O=Hongkong Post
+# Subject: CN=Hongkong Post Root CA 3 O=Hongkong Post
+# Label: "Hongkong Post Root CA 3"
+# Serial: 46170865288971385588281144162979347873371282084
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+-----BEGIN CERTIFICATE-----
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+bNe/JgERohYpSms0BpDsE9K2+2p20jzt8NYt3eEV7KObLyzJPivkaTv/ciWxNoZb
+x39ri1UbSsUgYT2uy1DhCDq+sI9jQVMwCFk8mB13umOResoQUGC/8Ne8lYePl8X+
+l2oBlKN8W4UdKjk60FSh0Tlxnf0h+bV78OLgAo9uliQlLKAeLKjEiafv7ZkGL7YK
+TE/bosw3Gq9HhS2KX8Q0NEwA/RiTZxPRN+ZItIsGxVd7GYYKecsAyVKvQv83j+Gj
+Hno9UKtjBucVtT+2RTeUN7F+8kjDf8V1/peNRY8apxpyKBpADwIDAQABo2MwYTAP
+BgNVHRMBAf8EBTADAQH/MA4GA1UdDwEB/wQEAwIBBjAfBgNVHSMEGDAWgBQXnc0e
+i9Y5K3DTXNSguB+wAPzFYTAdBgNVHQ4EFgQUF53NHovWOStw01zUoLgfsAD8xWEw
+DQYJKoZIhvcNAQELBQADggIBAFbVe27mIgHSQpsY1Q7XZiNc4/6gx5LS6ZStS6LG
+7BJ8dNVI0lkUmcDrudHr9EgwW62nV3OZqdPlt9EuWSRY3GguLmLYauRwCy0gUCCk
+MpXRAJi70/33MvJJrsZ64Ee+bs7Lo3I6LWldy8joRTnU+kLBEUx3XZL7av9YROXr
+gZ6voJmtvqkBZss4HTzfQx/0TW60uhdG/H39h4F5ag0zD/ov+BS5gLNdTaqX4fnk
+GMX41TiMJjz98iji7lpJiCzfeT2OnpA8vUFKOt1b9pq0zj8lMH8yfaIDlNDceqFS
+3m6TjRgm/VWsvY+b0s+v54Ysyx8Jb6NvqYTUc79NoXQbTiNg8swOqn+knEwlqLJm
+Ozj/2ZQw9nKEvmhVEA/GcywWaZMH/rFF7buiVWqw2rVKAiUnhde3t4ZEFolsgCs+
+l6mc1X5VTMbeRRAc6uk7nwNT7u56AQIWeNTowr5GdogTPyK7SBIdUgC0An4hGh6c
+JfTzPV4e0hz5sy229zdcxsshTrD3mUcYhcErulWuBurQB7Lcq9CClnXO0lD+mefP
+L5/ndtFhKvshuzHQqp9HpLIiyhY6UFfEW0NnxWViA0kB60PZ2Pierc+xYw5F9KBa
+LJstxabArahH9CdMOA0uG0k7UvToiIMrVCjU8jVStDKDYmlkDJGcn5fqdBb9HxEG
+mpv0
+-----END CERTIFICATE-----
+
+# Issuer: CN=Entrust Root Certification Authority - G4 O=Entrust, Inc. OU=See www.entrust.net/legal-terms/(c) 2015 Entrust, Inc. - for authorized use only
+# Subject: CN=Entrust Root Certification Authority - G4 O=Entrust, Inc. OU=See www.entrust.net/legal-terms/(c) 2015 Entrust, Inc. - for authorized use only
+# Label: "Entrust Root Certification Authority - G4"
+# Serial: 289383649854506086828220374796556676440
+# MD5 Fingerprint: 89:53:f1:83:23:b7:7c:8e:05:f1:8c:71:38:4e:1f:88
+# SHA1 Fingerprint: 14:88:4e:86:26:37:b0:26:af:59:62:5c:40:77:ec:35:29:ba:96:01
+# SHA256 Fingerprint: db:35:17:d1:f6:73:2a:2d:5a:b9:7c:53:3e:c7:07:79:ee:32:70:a6:2f:b4:ac:42:38:37:24:60:e6:f0:1e:88
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+
 `
 
-var ErrParseFailed = errors.New("gocertifi: error when parsing certificates")
-
-// CACerts builds an X.509 certificate pool containing the Mozilla CA
-// Certificate bundle. Returns nil on error along with an appropriate error
-// code.
+// CACerts builds an X.509 certificate pool containing the
+// certificate bundle from https://mkcert.org/generate/ fetch on 2020-02-11 10:00:50.717122 -0800 PST m=+0.664468880.
+// Returns nil on error along with an appropriate error code.
 func CACerts() (*x509.CertPool, error) {
 	pool := x509.NewCertPool()
-	ok := pool.AppendCertsFromPEM([]byte(pemcerts))
-	if !ok {
-		return nil, ErrParseFailed
-	}
+	pool.AppendCertsFromPEM([]byte(pemcerts))
 	return pool, nil
 }

vendor/github.com/certifi/gocertifi/go.mod

@@ -0,0 +1,3 @@
+module github.com/certifi/gocertifi
+
+go 1.12

vendor/github.com/certifi/gocertifi/tasks.py

@@ -1,20 +0,0 @@
-from invoke import task
-import requests
-
-@task
-def update(ctx):
-    r = requests.get('https://mkcert.org/generate/')
-    r.raise_for_status()
-    certs = r.content
-
-    with open('certifi.go', 'rb') as f:
-        file = f.read()
-
-    file = file.split('`\n')
-    assert len(file) == 3
-    file[1] = certs
-
-    ctx.run("rm certifi.go")
-
-    with open('certifi.go', 'wb') as f:
-        f.write('`\n'.join(file))

vendor/github.com/cloudflare/cfssl/LICENSE

@@ -0,0 +1,24 @@
+Copyright (c) 2014 CloudFlare Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+
+Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions and the following disclaimer in the documentation
+and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/cloudflare/cfssl/log/log.go

@@ -0,0 +1,98 @@
+// Package log implements a wrapper around the Go standard library's
+// logging package. Clients should set the current log level; only
+// messages below that level will actually be logged. For example, if
+// Level is set to LevelWarning, only log messages at the Warning,
+// Error, and Critical levels will be logged.
+package log
+
+import (
+	"fmt"
+	golog "log"
+)
+
+// The following constants represent logging levels in increasing levels of seriousness.
+const (
+	LevelDebug = iota
+	LevelInfo
+	LevelWarning
+	LevelError
+	LevelCritical
+)
+
+var levelPrefix = [...]string{
+	LevelDebug:    "[DEBUG] ",
+	LevelInfo:     "[INFO] ",
+	LevelWarning:  "[WARNING] ",
+	LevelError:    "[ERROR] ",
+	LevelCritical: "[CRITICAL] ",
+}
+
+// Level stores the current logging level.
+var Level = LevelDebug
+
+func outputf(l int, format string, v []interface{}) {
+	if l >= Level {
+		golog.Printf(fmt.Sprint(levelPrefix[l], format), v...)
+	}
+}
+
+func output(l int, v []interface{}) {
+	if l >= Level {
+		golog.Print(levelPrefix[l], fmt.Sprint(v...))
+	}
+}
+
+// Criticalf logs a formatted message at the "critical" level. The
+// arguments are handled in the same manner as fmt.Printf.
+func Criticalf(format string, v ...interface{}) {
+	outputf(LevelCritical, format, v)
+}
+
+// Critical logs its arguments at the "critical" level.
+func Critical(v ...interface{}) {
+	output(LevelCritical, v)
+}
+
+// Errorf logs a formatted message at the "error" level. The arguments
+// are handled in the same manner as fmt.Printf.
+func Errorf(format string, v ...interface{}) {
+	outputf(LevelError, format, v)
+}
+
+// Error logs its arguments at the "error" level.
+func Error(v ...interface{}) {
+	output(LevelError, v)
+}
+
+// Warningf logs a formatted message at the "warning" level. The
+// arguments are handled in the same manner as fmt.Printf.
+func Warningf(format string, v ...interface{}) {
+	outputf(LevelWarning, format, v)
+}
+
+// Warning logs its arguments at the "warning" level.
+func Warning(v ...interface{}) {
+	output(LevelWarning, v)
+}
+
+// Infof logs a formatted message at the "info" level. The arguments
+// are handled in the same manner as fmt.Printf.
+func Infof(format string, v ...interface{}) {
+	outputf(LevelInfo, format, v)
+}
+
+// Info logs its arguments at the "info" level.
+func Info(v ...interface{}) {
+	output(LevelInfo, v)
+}
+
+// Debugf logs a formatted message at the "debug" level. The arguments
+// are handled in the same manner as fmt.Printf.
+func Debugf(format string, v ...interface{}) {
+	outputf(LevelDebug, format, v)
+}
+
+// Debug logs its arguments at the "debug" level.
+func Debug(v ...interface{}) {
+	output(LevelDebug, v)
+}

vendor/github.com/cloudflare/cfssl/revoke/revoke.go

@@ -0,0 +1,146 @@
+// Package revoke provides functionality for checking the validity of
+// a cert. Specifically, the temporal validity of the certificate is
+// checked first, then any CRL in the cert is checked. OCSP is not
+// supported at this time.
+package revoke
+
+import (
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"errors"
+	"io/ioutil"
+	"net/http"
+	neturl "net/url"
+	"time"
+
+	"github.com/cloudflare/cfssl/log"
+)
+
+// HardFail determines whether the failure to check the revocation
+// status of a certificate (i.e. due to network failure) causes
+// verification to fail (a hard failure).
+var HardFail = false
+
+// TODO (kyle): figure out a good mechanism for OCSP; this requires
+// presenting both the certificate and the issuer, and we don't have a
+// good way at this time of getting the issuer.
+
+// CRLSet associates a PKIX certificate list with the URL the CRL is
+// fetched from.
+var CRLSet = map[string]*pkix.CertificateList{}
+
+// We can't handle LDAP certificates, so this checks to see if the
+// URL string points to an LDAP resource so that we can ignore it.
+func ldapURL(url string) bool {
+	u, err := neturl.Parse(url)
+	if err != nil {
+		log.Warningf("invalid url %s: %v", url, err)
+		return false
+	}
+	if u.Scheme == "ldap" {
+		return true
+	}
+	return false
+}
+
+// revCheck should check the certificate for any revocations. It
+// returns a pair of booleans: the first indicates whether the certificate
+// is revoked, the second indicates whether the revocations were
+// successfully checked.. This leads to the following combinations:
+//
+//	false, false: an error was encountered while checking revocations.
+//
+//	false, true:  the certificate was checked successfully and
+//		      it is not revoked.
+//
+//      true, true:   the certificate was checked successfully and
+//		      it is revoked.
+func revCheck(cert *x509.Certificate) (revoked, ok bool) {
+	for _, url := range cert.CRLDistributionPoints {
+		if ldapURL(url) {
+			log.Infof("skipping LDAP CRL: %s", url)
+			continue
+		}
+
+		if revoked, ok := certIsRevokedCRL(cert, url); !ok {
+			log.Warning("error checking revocation via CRL")
+			if HardFail {
+				return true, false
+			}
+			return false, false
+		} else if revoked {
+			log.Info("certificate is revoked via CRL")
+			return true, true
+		}
+	}
+
+	return false, true
+}
+
+// fetchCRL fetches and parses a CRL.
+func fetchCRL(url string) (*pkix.CertificateList, error) {
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, err
+	} else if resp.StatusCode >= 300 {
+		return nil, errors.New("failed to retrieve CRL")
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	resp.Body.Close()
+
+	return x509.ParseCRL(body)
+}
+
+// check a cert against a specific CRL. Returns the same bool pair
+// as revCheck.
+func certIsRevokedCRL(cert *x509.Certificate, url string) (revoked, ok bool) {
+	crl, ok := CRLSet[url]
+	if ok && crl == nil {
+		ok = false
+		delete(CRLSet, url)
+	}
+
+	var shouldFetchCRL = true
+	if ok {
+		if !crl.HasExpired(time.Now()) {
+			shouldFetchCRL = false
+		}
+	}
+
+	if shouldFetchCRL {
+		var err error
+		crl, err = fetchCRL(url)
+		if err != nil {
+			log.Warningf("failed to fetch CRL: %v", err)
+			return false, false
+		}
+		CRLSet[url] = crl
+	}
+
+	for _, revoked := range crl.TBSCertList.RevokedCertificates {
+		if cert.SerialNumber.Cmp(revoked.SerialNumber) == 0 {
+			log.Info("Serial number match: intermediate is revoked.")
+			return true, true
+		}
+	}
+
+	return false, true
+}
+
+// VerifyCertificate ensures that the certificate passed in hasn't
+// expired and checks the CRL for the server.
+func VerifyCertificate(cert *x509.Certificate) (revoked, ok bool) {
+	if !time.Now().Before(cert.NotAfter) {
+		log.Infof("Certificate expired %s\n", cert.NotAfter)
+		return true, true
+	} else if !time.Now().After(cert.NotBefore) {
+		log.Infof("Certificate isn't valid until %s\n", cert.NotBefore)
+		return true, true
+	}
+
+	return revCheck(cert)
+}

vendor/github.com/denisenkom/go-mssqldb/README.md

@@ -56,7 +56,7 @@ Other supported formats are listed below.
 * `hostNameInCertificate` - Specifies the Common Name (CN) in the server certificate. Default value is the server host.
 * `ServerSPN` - The kerberos SPN (Service Principal Name) for the server. Default is MSSQLSvc/host:port.
 * `Workstation ID` - The workstation name (default is the host name)
-* `ApplicationIntent` - Can be given the value `ReadOnly` to initiate a read-only connection to an Availability Group listener.
+* `ApplicationIntent` - Can be given the value `ReadOnly` to initiate a read-only connection to an Availability Group listener. The `database` must be specified when connecting with `Application Intent` set to `ReadOnly`. 
 
 ### The connection string can be specified in one of three formats:
 
@@ -187,6 +187,19 @@ _, err := db.ExecContext(ctx, "theproc", &rs)
 log.Printf("status=%d", rs)
 ```
 
+or
+
+```
+var rs mssql.ReturnStatus
+_, err := db.QueryContext(ctx, "theproc", &rs)
+for rows.Next() {
+	err = rows.Scan(&val)
+}
+log.Printf("status=%d", rs)
+```
+
+Limitation: ReturnStatus cannot be retrieved using `QueryRow`.
+
 ## Parameters
 
 The `sqlserver` driver uses normal MS SQL Server syntax and expects parameters in
@@ -207,9 +220,9 @@ are supported:
  * time.Time -> datetimeoffset or datetime (TDS version dependent)
  * mssql.DateTime1 -> datetime
  * mssql.DateTimeOffset -> datetimeoffset
- * "cloud.google.com/go/civil".Date -> date
- * "cloud.google.com/go/civil".DateTime -> datetime2
- * "cloud.google.com/go/civil".Time -> time
+ * "github.com/golang-sql/civil".Date -> date
+ * "github.com/golang-sql/civil".DateTime -> datetime2
+ * "github.com/golang-sql/civil".Time -> time
  * mssql.TVP -> Table Value Parameter (TDS version dependent)
 
 ## Important Notes

vendor/github.com/denisenkom/go-mssqldb/appveyor.yml

@@ -10,7 +10,7 @@ environment:
   SQLUSER: sa
   SQLPASSWORD: Password12!
   DATABASE: test  
-  GOVERSION: 110
+  GOVERSION: 111
   matrix:
     - GOVERSION: 18
       SQLINSTANCE: SQL2016
@@ -18,6 +18,8 @@ environment:
       SQLINSTANCE: SQL2016
     - GOVERSION: 110
       SQLINSTANCE: SQL2016
+    - GOVERSION: 111
+      SQLINSTANCE: SQL2016
     - SQLINSTANCE: SQL2014
     - SQLINSTANCE: SQL2012SP1
     - SQLINSTANCE: SQL2008R2SP2
@@ -27,7 +29,7 @@ install:
   - set PATH=%GOPATH%\bin;%GOROOT%\bin;%PATH%
   - go version
   - go env
-  - go get -u cloud.google.com/go/civil
+  - go get -u github.com/golang-sql/civil
 
 build_script:
   - go build

vendor/github.com/denisenkom/go-mssqldb/buf.go

@@ -221,23 +221,27 @@ func (r *tdsBuffer) uint16() uint16 {
 }
 
 func (r *tdsBuffer) BVarChar() string {
-	l := int(r.byte())
-	return r.readUcs2(l)
+	return readBVarCharOrPanic(r)
 }
 
-func (r *tdsBuffer) UsVarChar() string {
-	l := int(r.uint16())
-	return r.readUcs2(l)
-}
-
-func (r *tdsBuffer) readUcs2(numchars int) string {
-	b := make([]byte, numchars*2)
-	r.ReadFull(b)
-	res, err := ucs22str(b)
+func readBVarCharOrPanic(r io.Reader) string {
+	s, err := readBVarChar(r)
 	if err != nil {
 		badStreamPanic(err)
 	}
-	return res
+	return s
+}
+
+func readUsVarCharOrPanic(r io.Reader) string {
+	s, err := readUsVarChar(r)
+	if err != nil {
+		badStreamPanic(err)
+	}
+	return s
+}
+
+func (r *tdsBuffer) UsVarChar() string {
+	return readUsVarCharOrPanic(r)
 }
 
 func (r *tdsBuffer) Read(buf []byte) (copied int, err error) {

vendor/github.com/denisenkom/go-mssqldb/bulkcopy.go

@@ -7,9 +7,10 @@ import (
 	"fmt"
 	"math"
 	"reflect"
-	"strconv"
 	"strings"
 	"time"
+
+	"github.com/denisenkom/go-mssqldb/internal/decimal"
 )
 
 type Bulk struct {
@@ -42,6 +43,11 @@ type BulkOptions struct {
 
 type DataValue interface{}
 
+const (
+	sqlDateFormat = "2006-01-02"
+	sqlTimeFormat = "2006-01-02 15:04:05.999999999Z07:00"
+)
+
 func (cn *Conn) CreateBulk(table string, columns []string) (_ *Bulk) {
 	b := Bulk{ctx: context.Background(), cn: cn, tablename: table, headerSent: false, columnsName: columns}
 	b.Debug = false
@@ -334,7 +340,7 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 		case int64:
 			intvalue = val
 		default:
-			err = fmt.Errorf("mssql: invalid type for int column")
+			err = fmt.Errorf("mssql: invalid type for int column: %T", val)
 			return
 		}
 
@@ -361,7 +367,7 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 		case int64:
 			floatvalue = float64(val)
 		default:
-			err = fmt.Errorf("mssql: invalid type for float column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for float column: %T %s", val, val)
 			return
 		}
 
@@ -380,7 +386,7 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 		case []byte:
 			res.buffer = val
 		default:
-			err = fmt.Errorf("mssql: invalid type for nvarchar column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for nvarchar column: %T %s", val, val)
 			return
 		}
 		res.ti.Size = len(res.buffer)
@@ -392,14 +398,14 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 		case []byte:
 			res.buffer = val
 		default:
-			err = fmt.Errorf("mssql: invalid type for varchar column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for varchar column: %T %s", val, val)
 			return
 		}
 		res.ti.Size = len(res.buffer)
 
 	case typeBit, typeBitN:
 		if reflect.TypeOf(val).Kind() != reflect.Bool {
-			err = fmt.Errorf("mssql: invalid type for bit column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for bit column: %T %s", val, val)
 			return
 		}
 		res.ti.TypeId = typeBitN
@@ -413,18 +419,31 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 		case time.Time:
 			res.buffer = encodeDateTime2(val, int(col.ti.Scale))
 			res.ti.Size = len(res.buffer)
+		case string:
+			var t time.Time
+			if t, err = time.Parse(sqlTimeFormat, val); err != nil {
+				return res, fmt.Errorf("bulk: unable to convert string to date: %v", err)
+			}
+			res.buffer = encodeDateTime2(t, int(col.ti.Scale))
+			res.ti.Size = len(res.buffer)
 		default:
-			err = fmt.Errorf("mssql: invalid type for datetime2 column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for datetime2 column: %T %s", val, val)
 			return
 		}
 	case typeDateTimeOffsetN:
 		switch val := val.(type) {
 		case time.Time:
-			res.buffer = encodeDateTimeOffset(val, int(res.ti.Scale))
+			res.buffer = encodeDateTimeOffset(val, int(col.ti.Scale))
+			res.ti.Size = len(res.buffer)
+		case string:
+			var t time.Time
+			if t, err = time.Parse(sqlTimeFormat, val); err != nil {
+				return res, fmt.Errorf("bulk: unable to convert string to date: %v", err)
+			}
+			res.buffer = encodeDateTimeOffset(t, int(col.ti.Scale))
 			res.ti.Size = len(res.buffer)
-
 		default:
-			err = fmt.Errorf("mssql: invalid type for datetimeoffset column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for datetimeoffset column: %T %s", val, val)
 			return
 		}
 	case typeDateN:
@@ -432,69 +451,79 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 		case time.Time:
 			res.buffer = encodeDate(val)
 			res.ti.Size = len(res.buffer)
+		case string:
+			var t time.Time
+			if t, err = time.ParseInLocation(sqlDateFormat, val, time.UTC); err != nil {
+				return res, fmt.Errorf("bulk: unable to convert string to date: %v", err)
+			}
+			res.buffer = encodeDate(t)
+			res.ti.Size = len(res.buffer)
 		default:
-			err = fmt.Errorf("mssql: invalid type for date column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for date column: %T %s", val, val)
 			return
 		}
 	case typeDateTime, typeDateTimeN, typeDateTim4:
+		var t time.Time
 		switch val := val.(type) {
 		case time.Time:
-			if col.ti.Size == 4 {
-				res.buffer = encodeDateTim4(val)
-				res.ti.Size = len(res.buffer)
-			} else if col.ti.Size == 8 {
-				res.buffer = encodeDateTime(val)
-				res.ti.Size = len(res.buffer)
-			} else {
-				err = fmt.Errorf("mssql: invalid size of column")
+			t = val
+		case string:
+			if t, err = time.Parse(sqlTimeFormat, val); err != nil {
+				return res, fmt.Errorf("bulk: unable to convert string to date: %v", err)
 			}
-
 		default:
-			err = fmt.Errorf("mssql: invalid type for datetime column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for datetime column: %T %s", val, val)
+			return
+		}
+
+		if col.ti.Size == 4 {
+			res.buffer = encodeDateTim4(t)
+			res.ti.Size = len(res.buffer)
+		} else if col.ti.Size == 8 {
+			res.buffer = encodeDateTime(t)
+			res.ti.Size = len(res.buffer)
+		} else {
+			err = fmt.Errorf("mssql: invalid size of column %d", col.ti.Size)
 		}
 
 	// case typeMoney, typeMoney4, typeMoneyN:
 	case typeDecimal, typeDecimalN, typeNumeric, typeNumericN:
-		var value float64
+		prec := col.ti.Prec
+		scale := col.ti.Scale
+		var dec decimal.Decimal
 		switch v := val.(type) {
 		case int:
-			value = float64(v)
+			dec = decimal.Int64ToDecimalScale(int64(v), 0)
 		case int8:
-			value = float64(v)
+			dec = decimal.Int64ToDecimalScale(int64(v), 0)
 		case int16:
-			value = float64(v)
+			dec = decimal.Int64ToDecimalScale(int64(v), 0)
 		case int32:
-			value = float64(v)
+			dec = decimal.Int64ToDecimalScale(int64(v), 0)
 		case int64:
-			value = float64(v)
+			dec = decimal.Int64ToDecimalScale(int64(v), 0)
 		case float32:
-			value = float64(v)
+			dec, err = decimal.Float64ToDecimalScale(float64(v), scale)
 		case float64:
-			value = v
+			dec, err = decimal.Float64ToDecimalScale(float64(v), scale)
 		case string:
-			if value, err = strconv.ParseFloat(v, 64); err != nil {
-				return res, fmt.Errorf("bulk: unable to convert string to float: %v", err)
-			}
+			dec, err = decimal.StringToDecimalScale(v, scale)
 		default:
-			return res, fmt.Errorf("unknown value for decimal: %#v", v)
+			return res, fmt.Errorf("unknown value for decimal: %T %#v", v, v)
 		}
 
-		perc := col.ti.Prec
-		scale := col.ti.Scale
-		var dec Decimal
-		dec, err = Float64ToDecimalScale(value, scale)
 		if err != nil {
 			return res, err
 		}
-		dec.prec = perc
+		dec.SetPrec(prec)
 
 		var length byte
 		switch {
-		case perc <= 9:
+		case prec <= 9:
 			length = 4
-		case perc <= 19:
+		case prec <= 19:
 			length = 8
-		case perc <= 28:
+		case prec <= 28:
 			length = 12
 		default:
 			length = 16
@@ -504,7 +533,7 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 		// first byte length written by typeInfo.writer
 		res.ti.Size = int(length) + 1
 		// second byte sign
-		if value < 0 {
+		if !dec.IsPositive() {
 			buf[0] = 0
 		} else {
 			buf[0] = 1
@@ -527,7 +556,7 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 			res.ti.Size = len(val)
 			res.buffer = val
 		default:
-			err = fmt.Errorf("mssql: invalid type for Binary column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for Binary column: %T %s", val, val)
 			return
 		}
 	case typeGuid:
@@ -536,7 +565,7 @@ func (b *Bulk) makeParam(val DataValue, col columnStruct) (res param, err error)
 			res.ti.Size = len(val)
 			res.buffer = val
 		default:
-			err = fmt.Errorf("mssql: invalid type for Guid column: %s", val)
+			err = fmt.Errorf("mssql: invalid type for Guid column: %T %s", val, val)
 			return
 		}
 

vendor/github.com/denisenkom/go-mssqldb/conn_str.go

@@ -0,0 +1,456 @@
+package mssql
+
+import (
+	"fmt"
+	"net"
+	"net/url"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+	"unicode"
+)
+
+type connectParams struct {
+	logFlags                  uint64
+	port                      uint64
+	host                      string
+	instance                  string
+	database                  string
+	user                      string
+	password                  string
+	dial_timeout              time.Duration
+	conn_timeout              time.Duration
+	keepAlive                 time.Duration
+	encrypt                   bool
+	disableEncryption         bool
+	trustServerCertificate    bool
+	certificate               string
+	hostInCertificate         string
+	hostInCertificateProvided bool
+	serverSPN                 string
+	workstation               string
+	appname                   string
+	typeFlags                 uint8
+	failOverPartner           string
+	failOverPort              uint64
+	packetSize                uint16
+}
+
+func parseConnectParams(dsn string) (connectParams, error) {
+	var p connectParams
+
+	var params map[string]string
+	if strings.HasPrefix(dsn, "odbc:") {
+		parameters, err := splitConnectionStringOdbc(dsn[len("odbc:"):])
+		if err != nil {
+			return p, err
+		}
+		params = parameters
+	} else if strings.HasPrefix(dsn, "sqlserver://") {
+		parameters, err := splitConnectionStringURL(dsn)
+		if err != nil {
+			return p, err
+		}
+		params = parameters
+	} else {
+		params = splitConnectionString(dsn)
+	}
+
+	strlog, ok := params["log"]
+	if ok {
+		var err error
+		p.logFlags, err = strconv.ParseUint(strlog, 10, 64)
+		if err != nil {
+			return p, fmt.Errorf("Invalid log parameter '%s': %s", strlog, err.Error())
+		}
+	}
+	server := params["server"]
+	parts := strings.SplitN(server, `\`, 2)
+	p.host = parts[0]
+	if p.host == "." || strings.ToUpper(p.host) == "(LOCAL)" || p.host == "" {
+		p.host = "localhost"
+	}
+	if len(parts) > 1 {
+		p.instance = parts[1]
+	}
+	p.database = params["database"]
+	p.user = params["user id"]
+	p.password = params["password"]
+
+	p.port = 1433
+	strport, ok := params["port"]
+	if ok {
+		var err error
+		p.port, err = strconv.ParseUint(strport, 10, 16)
+		if err != nil {
+			f := "Invalid tcp port '%v': %v"
+			return p, fmt.Errorf(f, strport, err.Error())
+		}
+	}
+
+	// https://docs.microsoft.com/en-us/sql/database-engine/configure-windows/configure-the-network-packet-size-server-configuration-option
+	// Default packet size remains at 4096 bytes
+	p.packetSize = 4096
+	strpsize, ok := params["packet size"]
+	if ok {
+		var err error
+		psize, err := strconv.ParseUint(strpsize, 0, 16)
+		if err != nil {
+			f := "Invalid packet size '%v': %v"
+			return p, fmt.Errorf(f, strpsize, err.Error())
+		}
+
+		// Ensure packet size falls within the TDS protocol range of 512 to 32767 bytes
+		// NOTE: Encrypted connections have a maximum size of 16383 bytes.  If you request
+		// a higher packet size, the server will respond with an ENVCHANGE request to
+		// alter the packet size to 16383 bytes.
+		p.packetSize = uint16(psize)
+		if p.packetSize < 512 {
+			p.packetSize = 512
+		} else if p.packetSize > 32767 {
+			p.packetSize = 32767
+		}
+	}
+
+	// https://msdn.microsoft.com/en-us/library/dd341108.aspx
+	//
+	// Do not set a connection timeout. Use Context to manage such things.
+	// Default to zero, but still allow it to be set.
+	if strconntimeout, ok := params["connection timeout"]; ok {
+		timeout, err := strconv.ParseUint(strconntimeout, 10, 64)
+		if err != nil {
+			f := "Invalid connection timeout '%v': %v"
+			return p, fmt.Errorf(f, strconntimeout, err.Error())
+		}
+		p.conn_timeout = time.Duration(timeout) * time.Second
+	}
+	p.dial_timeout = 15 * time.Second
+	if strdialtimeout, ok := params["dial timeout"]; ok {
+		timeout, err := strconv.ParseUint(strdialtimeout, 10, 64)
+		if err != nil {
+			f := "Invalid dial timeout '%v': %v"
+			return p, fmt.Errorf(f, strdialtimeout, err.Error())
+		}
+		p.dial_timeout = time.Duration(timeout) * time.Second
+	}
+
+	// default keep alive should be 30 seconds according to spec:
+	// https://msdn.microsoft.com/en-us/library/dd341108.aspx
+	p.keepAlive = 30 * time.Second
+	if keepAlive, ok := params["keepalive"]; ok {
+		timeout, err := strconv.ParseUint(keepAlive, 10, 64)
+		if err != nil {
+			f := "Invalid keepAlive value '%s': %s"
+			return p, fmt.Errorf(f, keepAlive, err.Error())
+		}
+		p.keepAlive = time.Duration(timeout) * time.Second
+	}
+	encrypt, ok := params["encrypt"]
+	if ok {
+		if strings.EqualFold(encrypt, "DISABLE") {
+			p.disableEncryption = true
+		} else {
+			var err error
+			p.encrypt, err = strconv.ParseBool(encrypt)
+			if err != nil {
+				f := "Invalid encrypt '%s': %s"
+				return p, fmt.Errorf(f, encrypt, err.Error())
+			}
+		}
+	} else {
+		p.trustServerCertificate = true
+	}
+	trust, ok := params["trustservercertificate"]
+	if ok {
+		var err error
+		p.trustServerCertificate, err = strconv.ParseBool(trust)
+		if err != nil {
+			f := "Invalid trust server certificate '%s': %s"
+			return p, fmt.Errorf(f, trust, err.Error())
+		}
+	}
+	p.certificate = params["certificate"]
+	p.hostInCertificate, ok = params["hostnameincertificate"]
+	if ok {
+		p.hostInCertificateProvided = true
+	} else {
+		p.hostInCertificate = p.host
+		p.hostInCertificateProvided = false
+	}
+
+	serverSPN, ok := params["serverspn"]
+	if ok {
+		p.serverSPN = serverSPN
+	} else {
+		p.serverSPN = fmt.Sprintf("MSSQLSvc/%s:%d", p.host, p.port)
+	}
+
+	workstation, ok := params["workstation id"]
+	if ok {
+		p.workstation = workstation
+	} else {
+		workstation, err := os.Hostname()
+		if err == nil {
+			p.workstation = workstation
+		}
+	}
+
+	appname, ok := params["app name"]
+	if !ok {
+		appname = "go-mssqldb"
+	}
+	p.appname = appname
+
+	appintent, ok := params["applicationintent"]
+	if ok {
+		if appintent == "ReadOnly" {
+			if p.database == "" {
+				return p, fmt.Errorf("Database must be specified when ApplicationIntent is ReadOnly")
+			}
+			p.typeFlags |= fReadOnlyIntent
+		}
+	}
+
+	failOverPartner, ok := params["failoverpartner"]
+	if ok {
+		p.failOverPartner = failOverPartner
+	}
+
+	failOverPort, ok := params["failoverport"]
+	if ok {
+		var err error
+		p.failOverPort, err = strconv.ParseUint(failOverPort, 0, 16)
+		if err != nil {
+			f := "Invalid tcp port '%v': %v"
+			return p, fmt.Errorf(f, failOverPort, err.Error())
+		}
+	}
+
+	return p, nil
+}
+
+func splitConnectionString(dsn string) (res map[string]string) {
+	res = map[string]string{}
+	parts := strings.Split(dsn, ";")
+	for _, part := range parts {
+		if len(part) == 0 {
+			continue
+		}
+		lst := strings.SplitN(part, "=", 2)
+		name := strings.TrimSpace(strings.ToLower(lst[0]))
+		if len(name) == 0 {
+			continue
+		}
+		var value string = ""
+		if len(lst) > 1 {
+			value = strings.TrimSpace(lst[1])
+		}
+		res[name] = value
+	}
+	return res
+}
+
+// Splits a URL of the form sqlserver://username:password@host/instance?param1=value&param2=value
+func splitConnectionStringURL(dsn string) (map[string]string, error) {
+	res := map[string]string{}
+
+	u, err := url.Parse(dsn)
+	if err != nil {
+		return res, err
+	}
+
+	if u.Scheme != "sqlserver" {
+		return res, fmt.Errorf("scheme %s is not recognized", u.Scheme)
+	}
+
+	if u.User != nil {
+		res["user id"] = u.User.Username()
+		p, exists := u.User.Password()
+		if exists {
+			res["password"] = p
+		}
+	}
+
+	host, port, err := net.SplitHostPort(u.Host)
+	if err != nil {
+		host = u.Host
+	}
+
+	if len(u.Path) > 0 {
+		res["server"] = host + "\\" + u.Path[1:]
+	} else {
+		res["server"] = host
+	}
+
+	if len(port) > 0 {
+		res["port"] = port
+	}
+
+	query := u.Query()
+	for k, v := range query {
+		if len(v) > 1 {
+			return res, fmt.Errorf("key %s provided more than once", k)
+		}
+		res[strings.ToLower(k)] = v[0]
+	}
+
+	return res, nil
+}
+
+// Splits a URL in the ODBC format
+func splitConnectionStringOdbc(dsn string) (map[string]string, error) {
+	res := map[string]string{}
+
+	type parserState int
+	const (
+		// Before the start of a key
+		parserStateBeforeKey parserState = iota
+
+		// Inside a key
+		parserStateKey
+
+		// Beginning of a value. May be bare or braced
+		parserStateBeginValue
+
+		// Inside a bare value
+		parserStateBareValue
+
+		// Inside a braced value
+		parserStateBracedValue
+
+		// A closing brace inside a braced value.
+		// May be the end of the value or an escaped closing brace, depending on the next character
+		parserStateBracedValueClosingBrace
+
+		// After a value. Next character should be a semicolon or whitespace.
+		parserStateEndValue
+	)
+
+	var state = parserStateBeforeKey
+
+	var key string
+	var value string
+
+	for i, c := range dsn {
+		switch state {
+		case parserStateBeforeKey:
+			switch {
+			case c == '=':
+				return res, fmt.Errorf("Unexpected character = at index %d. Expected start of key or semi-colon or whitespace.", i)
+			case !unicode.IsSpace(c) && c != ';':
+				state = parserStateKey
+				key += string(c)
+			}
+
+		case parserStateKey:
+			switch c {
+			case '=':
+				key = normalizeOdbcKey(key)
+				state = parserStateBeginValue
+
+			case ';':
+				// Key without value
+				key = normalizeOdbcKey(key)
+				res[key] = value
+				key = ""
+				value = ""
+				state = parserStateBeforeKey
+
+			default:
+				key += string(c)
+			}
+
+		case parserStateBeginValue:
+			switch {
+			case c == '{':
+				state = parserStateBracedValue
+			case c == ';':
+				// Empty value
+				res[key] = value
+				key = ""
+				state = parserStateBeforeKey
+			case unicode.IsSpace(c):
+				// Ignore whitespace
+			default:
+				state = parserStateBareValue
+				value += string(c)
+			}
+
+		case parserStateBareValue:
+			if c == ';' {
+				res[key] = strings.TrimRightFunc(value, unicode.IsSpace)
+				key = ""
+				value = ""
+				state = parserStateBeforeKey
+			} else {
+				value += string(c)
+			}
+
+		case parserStateBracedValue:
+			if c == '}' {
+				state = parserStateBracedValueClosingBrace
+			} else {
+				value += string(c)
+			}
+
+		case parserStateBracedValueClosingBrace:
+			if c == '}' {
+				// Escaped closing brace
+				value += string(c)
+				state = parserStateBracedValue
+				continue
+			}
+
+			// End of braced value
+			res[key] = value
+			key = ""
+			value = ""
+
+			// This character is the first character past the end,
+			// so it needs to be parsed like the parserStateEndValue state.
+			state = parserStateEndValue
+			switch {
+			case c == ';':
+				state = parserStateBeforeKey
+			case unicode.IsSpace(c):
+				// Ignore whitespace
+			default:
+				return res, fmt.Errorf("Unexpected character %c at index %d. Expected semi-colon or whitespace.", c, i)
+			}
+
+		case parserStateEndValue:
+			switch {
+			case c == ';':
+				state = parserStateBeforeKey
+			case unicode.IsSpace(c):
+				// Ignore whitespace
+			default:
+				return res, fmt.Errorf("Unexpected character %c at index %d. Expected semi-colon or whitespace.", c, i)
+			}
+		}
+	}
+
+	switch state {
+	case parserStateBeforeKey: // Okay
+	case parserStateKey: // Unfinished key. Treat as key without value.
+		key = normalizeOdbcKey(key)
+		res[key] = value
+	case parserStateBeginValue: // Empty value
+		res[key] = value
+	case parserStateBareValue:
+		res[key] = strings.TrimRightFunc(value, unicode.IsSpace)
+	case parserStateBracedValue:
+		return res, fmt.Errorf("Unexpected end of braced value at index %d.", len(dsn))
+	case parserStateBracedValueClosingBrace: // End of braced value
+		res[key] = value
+	case parserStateEndValue: // Okay
+	}
+
+	return res, nil
+}
+
+// Normalizes the given string as an ODBC-format key
+func normalizeOdbcKey(s string) string {
+	return strings.ToLower(strings.TrimRightFunc(s, unicode.IsSpace))
+}

vendor/github.com/denisenkom/go-mssqldb/decimal.go

@@ -1,131 +0,0 @@
-package mssql
-
-import (
-	"encoding/binary"
-	"errors"
-	"math"
-	"math/big"
-)
-
-// http://msdn.microsoft.com/en-us/library/ee780893.aspx
-type Decimal struct {
-	integer  [4]uint32
-	positive bool
-	prec     uint8
-	scale    uint8
-}
-
-var scaletblflt64 [39]float64
-
-func (d Decimal) ToFloat64() float64 {
-	val := float64(0)
-	for i := 3; i >= 0; i-- {
-		val *= 0x100000000
-		val += float64(d.integer[i])
-	}
-	if !d.positive {
-		val = -val
-	}
-	if d.scale != 0 {
-		val /= scaletblflt64[d.scale]
-	}
-	return val
-}
-
-const autoScale = 100
-
-func Float64ToDecimal(f float64) (Decimal, error) {
-	return Float64ToDecimalScale(f, autoScale)
-}
-
-func Float64ToDecimalScale(f float64, scale uint8) (Decimal, error) {
-	var dec Decimal
-	if math.IsNaN(f) {
-		return dec, errors.New("NaN")
-	}
-	if math.IsInf(f, 0) {
-		return dec, errors.New("Infinity can't be converted to decimal")
-	}
-	dec.positive = f >= 0
-	if !dec.positive {
-		f = math.Abs(f)
-	}
-	if f > 3.402823669209385e+38 {
-		return dec, errors.New("Float value is out of range")
-	}
-	dec.prec = 20
-	var integer float64
-	for dec.scale = 0; dec.scale <= scale; dec.scale++ {
-		integer = f * scaletblflt64[dec.scale]
-		_, frac := math.Modf(integer)
-		if frac == 0 && scale == autoScale {
-			break
-		}
-	}
-	for i := 0; i < 4; i++ {
-		mod := math.Mod(integer, 0x100000000)
-		integer -= mod
-		integer /= 0x100000000
-		dec.integer[i] = uint32(mod)
-	}
-	return dec, nil
-}
-
-func init() {
-	var acc float64 = 1
-	for i := 0; i <= 38; i++ {
-		scaletblflt64[i] = acc
-		acc *= 10
-	}
-}
-
-func (d Decimal) BigInt() big.Int {
-	bytes := make([]byte, 16)
-	binary.BigEndian.PutUint32(bytes[0:4], d.integer[3])
-	binary.BigEndian.PutUint32(bytes[4:8], d.integer[2])
-	binary.BigEndian.PutUint32(bytes[8:12], d.integer[1])
-	binary.BigEndian.PutUint32(bytes[12:16], d.integer[0])
-	var x big.Int
-	x.SetBytes(bytes)
-	if !d.positive {
-		x.Neg(&x)
-	}
-	return x
-}
-
-func (d Decimal) Bytes() []byte {
-	x := d.BigInt()
-	return scaleBytes(x.String(), d.scale)
-}
-
-func (d Decimal) UnscaledBytes() []byte {
-	x := d.BigInt()
-	return x.Bytes()
-}
-
-func scaleBytes(s string, scale uint8) []byte {
-	z := make([]byte, 0, len(s)+1)
-	if s[0] == '-' || s[0] == '+' {
-		z = append(z, byte(s[0]))
-		s = s[1:]
-	}
-	pos := len(s) - int(scale)
-	if pos <= 0 {
-		z = append(z, byte('0'))
-	} else if pos > 0 {
-		z = append(z, []byte(s[:pos])...)
-	}
-	if scale > 0 {
-		z = append(z, byte('.'))
-		for pos < 0 {
-			z = append(z, byte('0'))
-			pos++
-		}
-		z = append(z, []byte(s[pos:])...)
-	}
-	return z
-}
-
-func (d Decimal) String() string {
-	return string(d.Bytes())
-}

vendor/github.com/denisenkom/go-mssqldb/go.mod

@@ -3,8 +3,6 @@ module github.com/denisenkom/go-mssqldb
 go 1.11
 
 require (
-	cloud.google.com/go v0.37.4
+	github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe
 	golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c
-	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
-	gopkg.in/yaml.v2 v2.2.2 // indirect
 )

vendor/github.com/denisenkom/go-mssqldb/go.sum

@@ -1,168 +1,5 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.37.2 h1:4y4L7BdHenTfZL0HervofNTHh9Ad6mNX72cQvl+5eH0=
-cloud.google.com/go v0.37.2/go.mod h1:H8IAquKe2L30IxoupDgqTaQvKSwF/c8prYHynGIWQbA=
-git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
-git.apache.org/thrift.git v0.12.0/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
-github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
-github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
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-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
-github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
-github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
-github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
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-github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
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-github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
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-github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
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-github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
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-golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
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 golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c h1:Vj5n4GlwjmQteupaxJ9+0FNOmBrHfq7vN4btdGoDZgI=
 golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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vendor/github.com/denisenkom/go-mssqldb/internal/decimal/decimal.go

@@ -0,0 +1,252 @@
+package decimal
+
+import (
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"math"
+	"math/big"
+	"strings"
+)
+
+// Decimal represents decimal type in the Microsoft Open Specifications: http://msdn.microsoft.com/en-us/library/ee780893.aspx
+type Decimal struct {
+	integer  [4]uint32 // Little-endian
+	positive bool
+	prec     uint8
+	scale    uint8
+}
+
+var (
+	scaletblflt64 [39]float64
+	int10         big.Int
+	int1e5        big.Int
+)
+
+func init() {
+	var acc float64 = 1
+	for i := 0; i <= 38; i++ {
+		scaletblflt64[i] = acc
+		acc *= 10
+	}
+
+	int10.SetInt64(10)
+	int1e5.SetInt64(1e5)
+}
+
+const autoScale = 100
+
+// SetInteger sets the ind'th element in the integer array
+func (d *Decimal) SetInteger(integer uint32, ind uint8) {
+	d.integer[ind] = integer
+}
+
+// SetPositive sets the positive member
+func (d *Decimal) SetPositive(positive bool) {
+	d.positive = positive
+}
+
+// SetPrec sets the prec member
+func (d *Decimal) SetPrec(prec uint8) {
+	d.prec = prec
+}
+
+// SetScale sets the scale member
+func (d *Decimal) SetScale(scale uint8) {
+	d.scale = scale
+}
+
+// IsPositive returns true if the Decimal is positive
+func (d *Decimal) IsPositive() bool {
+	return d.positive
+}
+
+// ToFloat64 converts decimal to a float64
+func (d Decimal) ToFloat64() float64 {
+	val := float64(0)
+	for i := 3; i >= 0; i-- {
+		val *= 0x100000000
+		val += float64(d.integer[i])
+	}
+	if !d.positive {
+		val = -val
+	}
+	if d.scale != 0 {
+		val /= scaletblflt64[d.scale]
+	}
+	return val
+}
+
+// BigInt converts decimal to a bigint
+func (d Decimal) BigInt() big.Int {
+	bytes := make([]byte, 16)
+	binary.BigEndian.PutUint32(bytes[0:4], d.integer[3])
+	binary.BigEndian.PutUint32(bytes[4:8], d.integer[2])
+	binary.BigEndian.PutUint32(bytes[8:12], d.integer[1])
+	binary.BigEndian.PutUint32(bytes[12:16], d.integer[0])
+	var x big.Int
+	x.SetBytes(bytes)
+	if !d.positive {
+		x.Neg(&x)
+	}
+	return x
+}
+
+// Bytes converts decimal to a scaled byte slice
+func (d Decimal) Bytes() []byte {
+	x := d.BigInt()
+	return ScaleBytes(x.String(), d.scale)
+}
+
+// UnscaledBytes converts decimal to a unscaled byte slice
+func (d Decimal) UnscaledBytes() []byte {
+	x := d.BigInt()
+	return x.Bytes()
+}
+
+// String converts decimal to a string
+func (d Decimal) String() string {
+	return string(d.Bytes())
+}
+
+// Float64ToDecimal converts float64 to decimal
+func Float64ToDecimal(f float64) (Decimal, error) {
+	return Float64ToDecimalScale(f, autoScale)
+}
+
+// Float64ToDecimalScale converts float64 to decimal; user can specify the scale
+func Float64ToDecimalScale(f float64, scale uint8) (Decimal, error) {
+	var dec Decimal
+	if math.IsNaN(f) {
+		return dec, errors.New("NaN")
+	}
+	if math.IsInf(f, 0) {
+		return dec, errors.New("Infinity can't be converted to decimal")
+	}
+	dec.positive = f >= 0
+	if !dec.positive {
+		f = math.Abs(f)
+	}
+	if f > 3.402823669209385e+38 {
+		return dec, errors.New("Float value is out of range")
+	}
+	dec.prec = 20
+	var integer float64
+	for dec.scale = 0; dec.scale <= scale; dec.scale++ {
+		integer = f * scaletblflt64[dec.scale]
+		_, frac := math.Modf(integer)
+		if frac == 0 && scale == autoScale {
+			break
+		}
+	}
+	for i := 0; i < 4; i++ {
+		mod := math.Mod(integer, 0x100000000)
+		integer -= mod
+		integer /= 0x100000000
+		dec.integer[i] = uint32(mod)
+		if mod-math.Trunc(mod) >= 0.5 {
+			dec.integer[i] = uint32(mod) + 1
+		}
+	}
+	return dec, nil
+}
+
+// Int64ToDecimalScale converts float64 to decimal; user can specify the scale
+func Int64ToDecimalScale(v int64, scale uint8) Decimal {
+	positive := v >= 0
+	if !positive {
+		if v == math.MinInt64 {
+			// Special case - can't negate
+			return Decimal{
+				integer:  [4]uint32{0, 0x80000000, 0, 0},
+				positive: false,
+				prec:     20,
+				scale:    0,
+			}
+		}
+		v = -v
+	}
+	return Decimal{
+		integer:  [4]uint32{uint32(v), uint32(v >> 32), 0, 0},
+		positive: positive,
+		prec:     20,
+		scale:    scale,
+	}
+}
+
+// StringToDecimalScale converts string to decimal
+func StringToDecimalScale(v string, outScale uint8) (Decimal, error) {
+	var r big.Int
+	var unscaled string
+	var inScale int
+
+	point := strings.LastIndexByte(v, '.')
+	if point == -1 {
+		inScale = 0
+		unscaled = v
+	} else {
+		inScale = len(v) - point - 1
+		unscaled = v[:point] + v[point+1:]
+	}
+	if inScale > math.MaxUint8 {
+		return Decimal{}, fmt.Errorf("can't parse %q as a decimal number: scale too large", v)
+	}
+
+	_, ok := r.SetString(unscaled, 10)
+	if !ok {
+		return Decimal{}, fmt.Errorf("can't parse %q as a decimal number", v)
+	}
+
+	if inScale > int(outScale) {
+		return Decimal{}, fmt.Errorf("can't parse %q as a decimal number: scale %d is larger than the scale %d of the target column", v, inScale, outScale)
+	}
+	for inScale < int(outScale) {
+		if int(outScale)-inScale >= 5 {
+			r.Mul(&r, &int1e5)
+			inScale += 5
+		} else {
+			r.Mul(&r, &int10)
+			inScale++
+		}
+	}
+
+	bytes := r.Bytes()
+	if len(bytes) > 16 {
+		return Decimal{}, fmt.Errorf("can't parse %q as a decimal number: precision too large", v)
+	}
+	var out [4]uint32
+	for i, b := range bytes {
+		pos := len(bytes) - i - 1
+		out[pos/4] += uint32(b) << uint(pos%4*8)
+	}
+	return Decimal{
+		integer:  out,
+		positive: r.Sign() >= 0,
+		prec:     20,
+		scale:    uint8(inScale),
+	}, nil
+}
+
+// ScaleBytes converts a stringified decimal to a scaled byte slice
+func ScaleBytes(s string, scale uint8) []byte {
+	z := make([]byte, 0, len(s)+1)
+	if s[0] == '-' || s[0] == '+' {
+		z = append(z, byte(s[0]))
+		s = s[1:]
+	}
+	pos := len(s) - int(scale)
+	if pos <= 0 {
+		z = append(z, byte('0'))
+	} else if pos > 0 {
+		z = append(z, []byte(s[:pos])...)
+	}
+	if scale > 0 {
+		z = append(z, byte('.'))
+		for pos < 0 {
+			z = append(z, byte('0'))
+			pos++
+		}
+		z = append(z, []byte(s[pos:])...)
+	}
+	return z
+}

vendor/github.com/denisenkom/go-mssqldb/mssql.go

@@ -716,6 +716,8 @@ func (rc *Rows) Next(dest []driver.Value) error {
 			if tokdata.isError() {
 				return rc.stmt.c.checkBadConn(tokdata.getError())
 			}
+		case ReturnStatus:
+			rc.stmt.c.setReturnStatus(tokdata)
 		case error:
 			return rc.stmt.c.checkBadConn(tokdata)
 		}
@@ -874,29 +876,6 @@ func (r *Result) RowsAffected() (int64, error) {
 	return r.rowsAffected, nil
 }
 
-func (r *Result) LastInsertId() (int64, error) {
-	s, err := r.c.Prepare("select cast(@@identity as bigint)")
-	if err != nil {
-		return 0, err
-	}
-	defer s.Close()
-	rows, err := s.Query(nil)
-	if err != nil {
-		return 0, err
-	}
-	defer rows.Close()
-	dest := make([]driver.Value, 1)
-	err = rows.Next(dest)
-	if err != nil {
-		return 0, err
-	}
-	if dest[0] == nil {
-		return -1, errors.New("There is no generated identity value")
-	}
-	lastInsertId := dest[0].(int64)
-	return lastInsertId, nil
-}
-
 var _ driver.Pinger = &Conn{}
 
 // Ping is used to check if the remote server is available and satisfies the Pinger interface.