vendor, net/http: update x/net for httplex to httpguts merge

Updates x/net to git rev cbb82b59bc for:

    lex/httplex, http/httpguts: merge the httplex package into httpguts
    https://golang.org/cl/111875

    http2: set nextStreamID to 3 when AllowHTTP is set
    https://golang.org/cl/111835

    http2: terminate await request cancel goroutine on conn close
    https://golang.org/cl/108415

Fixes #24776 (CL 111655 didn't actually include it)

Change-Id: I0a21e169ebba2ec35219f347f1e31cd4c67bebdf
Reviewed-on: https://go-review.googlesource.com/111876
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Kunpei Sakai <namusyaka@gmail.com>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/go/build/deps_test.go

@@ -404,7 +404,6 @@ var pkgDeps = map[string][]string{
 		"golang_org/x/net/http/httpguts",
 		"golang_org/x/net/http2/hpack",
 		"golang_org/x/net/idna",
-		"golang_org/x/net/lex/httplex",
 		"golang_org/x/text/unicode/norm",
 		"golang_org/x/text/width",
 		"internal/nettrace",

src/net/http/h2_bundle.go

@@ -47,7 +47,6 @@ import (
 	"golang_org/x/net/http/httpguts"
 	"golang_org/x/net/http2/hpack"
 	"golang_org/x/net/idna"
-	"golang_org/x/net/lex/httplex"
 )
 
 // A list of the possible cipher suite ids. Taken from
@@ -2746,7 +2745,7 @@ func (fr *http2Framer) readMetaFrame(hf *http2HeadersFrame) (*http2MetaHeadersFr
 		if http2VerboseLogs && fr.logReads {
 			fr.debugReadLoggerf("http2: decoded hpack field %+v", hf)
 		}
-		if !httplex.ValidHeaderFieldValue(hf.Value) {
+		if !httpguts.ValidHeaderFieldValue(hf.Value) {
 			invalid = http2headerFieldValueError(hf.Value)
 		}
 		isPseudo := strings.HasPrefix(hf.Name, ":")
@@ -3372,7 +3371,7 @@ var (
 )
 
 // validWireHeaderFieldName reports whether v is a valid header field
-// name (key). See httplex.ValidHeaderName for the base rules.
+// name (key). See httpguts.ValidHeaderName for the base rules.
 //
 // Further, http2 says:
 //   "Just as in HTTP/1.x, header field names are strings of ASCII
@@ -3384,7 +3383,7 @@ func http2validWireHeaderFieldName(v string) bool {
 		return false
 	}
 	for _, r := range v {
-		if !httplex.IsTokenRune(r) {
+		if !httpguts.IsTokenRune(r) {
 			return false
 		}
 		if 'A' <= r && r <= 'Z' {
@@ -6846,7 +6845,9 @@ func (http2noCachedConnError) Error() string { return "http2: no cached connecti
 // or its equivalent renamed type in net/http2's h2_bundle.go. Both types
 // may coexist in the same running program.
 func http2isNoCachedConnError(err error) bool {
-	_, ok := err.(interface{ IsHTTP2NoCachedConnError() })
+	_, ok := err.(interface {
+		IsHTTP2NoCachedConnError()
+	})
 	return ok
 }
 
@@ -7092,6 +7093,10 @@ func (t *http2Transport) newClientConn(c net.Conn, singleUse bool) (*http2Client
 	// henc in response to SETTINGS frames?
 	cc.henc = hpack.NewEncoder(&cc.hbuf)
 
+	if t.AllowHTTP {
+		cc.nextStreamID = 3
+	}
+
 	if cs, ok := c.(http2connectionStater); ok {
 		state := cs.ConnectionState()
 		cc.tlsState = &state
@@ -7476,6 +7481,9 @@ func (cc *http2ClientConn) awaitOpenSlotForRequest(req *Request) error {
 	for {
 		cc.lastActive = time.Now()
 		if cc.closed || !cc.canTakeNewRequestLocked() {
+			if waitingForConn != nil {
+				close(waitingForConn)
+			}
 			return http2errClientConnUnusable
 		}
 		if int64(len(cc.streams))+1 <= int64(cc.maxConcurrentStreams) {
@@ -7699,7 +7707,7 @@ func (cc *http2ClientConn) encodeHeaders(req *Request, addGzipHeader bool, trail
 	if host == "" {
 		host = req.URL.Host
 	}
-	host, err := httplex.PunycodeHostPort(host)
+	host, err := httpguts.PunycodeHostPort(host)
 	if err != nil {
 		return nil, err
 	}
@@ -7724,11 +7732,11 @@ func (cc *http2ClientConn) encodeHeaders(req *Request, addGzipHeader bool, trail
 	// potentially pollute our hpack state. (We want to be able to
 	// continue to reuse the hpack encoder for future requests)
 	for k, vv := range req.Header {
-		if !httplex.ValidHeaderFieldName(k) {
+		if !httpguts.ValidHeaderFieldName(k) {
 			return nil, fmt.Errorf("invalid HTTP header name %q", k)
 		}
 		for _, v := range vv {
-			if !httplex.ValidHeaderFieldValue(v) {
+			if !httpguts.ValidHeaderFieldValue(v) {
 				return nil, fmt.Errorf("invalid HTTP header value %q for header %q", v, k)
 			}
 		}
@@ -8769,7 +8777,7 @@ func (t *http2Transport) getBodyWriterState(cs *http2clientStream, body io.Reade
 	}
 	s.delay = t.expectContinueTimeout()
 	if s.delay == 0 ||
-		!httplex.HeaderValuesContainsToken(
+		!httpguts.HeaderValuesContainsToken(
 			cs.req.Header["Expect"],
 			"100-continue") {
 		return
@@ -8824,7 +8832,7 @@ func (s http2bodyWriterState) scheduleBodyWrite() {
 // isConnectionCloseRequest reports whether req should use its own
 // connection for a single request and then close the connection.
 func http2isConnectionCloseRequest(req *Request) bool {
-	return req.Close || httplex.HeaderValuesContainsToken(req.Header["Connection"], "close")
+	return req.Close || httpguts.HeaderValuesContainsToken(req.Header["Connection"], "close")
 }
 
 // writeFramer is implemented by any type that is used to write frames.
@@ -9164,7 +9172,7 @@ func http2encodeHeaders(enc *hpack.Encoder, h Header, keys []string) {
 		}
 		isTE := k == "transfer-encoding"
 		for _, v := range vv {
-			if !httplex.ValidHeaderFieldValue(v) {
+			if !httpguts.ValidHeaderFieldValue(v) {
 				// TODO: return an error? golang.org/issue/14048
 				// For now just omit it.
 				continue

src/net/http/http.go

@@ -11,7 +11,7 @@ import (
 	"time"
 	"unicode/utf8"
 
-	"golang_org/x/net/lex/httplex"
+	"golang_org/x/net/http/httpguts"
 )
 
 // maxInt64 is the effective "infinite" value for the Server and
@@ -47,7 +47,7 @@ func removeEmptyPort(host string) string {
 }
 
 func isNotToken(r rune) bool {
-	return !httplex.IsTokenRune(r)
+	return !httpguts.IsTokenRune(r)
 }
 
 func isASCII(s string) bool {

src/net/http/server.go

@@ -29,7 +29,6 @@ import (
 	"time"
 
 	"golang_org/x/net/http/httpguts"
-	"golang_org/x/net/lex/httplex"
 )
 
 // Errors used by the HTTP server.
@@ -964,15 +963,15 @@ func (c *conn) readRequest(ctx context.Context) (w *response, err error) {
 	if len(hosts) > 1 {
 		return nil, badRequestError("too many Host headers")
 	}
-	if len(hosts) == 1 && !httplex.ValidHostHeader(hosts[0]) {
+	if len(hosts) == 1 && !httpguts.ValidHostHeader(hosts[0]) {
 		return nil, badRequestError("malformed Host header")
 	}
 	for k, vv := range req.Header {
-		if !httplex.ValidHeaderFieldName(k) {
+		if !httpguts.ValidHeaderFieldName(k) {
 			return nil, badRequestError("invalid header name")
 		}
 		for _, v := range vv {
-			if !httplex.ValidHeaderFieldValue(v) {
+			if !httpguts.ValidHeaderFieldValue(v) {
 				return nil, badRequestError("invalid header value")
 			}
 		}

src/net/http/transfer.go

@@ -19,7 +19,7 @@ import (
 	"sync"
 	"time"
 
-	"golang_org/x/net/lex/httplex"
+	"golang_org/x/net/http/httpguts"
 )
 
 // ErrLineTooLong is returned when reading request or response bodies
@@ -690,9 +690,9 @@ func shouldClose(major, minor int, header Header, removeCloseHeader bool) bool {
 	}
 
 	conv := header["Connection"]
-	hasClose := httplex.HeaderValuesContainsToken(conv, "close")
+	hasClose := httpguts.HeaderValuesContainsToken(conv, "close")
 	if major == 1 && minor == 0 {
-		return hasClose || !httplex.HeaderValuesContainsToken(conv, "keep-alive")
+		return hasClose || !httpguts.HeaderValuesContainsToken(conv, "keep-alive")
 	}
 
 	if hasClose && removeCloseHeader {

src/net/http/transport.go

@@ -28,7 +28,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	"golang_org/x/net/lex/httplex"
+	"golang_org/x/net/http/httpguts"
 )
 
 // DefaultTransport is the default implementation of Transport and is
@@ -363,11 +363,11 @@ func (t *Transport) RoundTrip(req *Request) (*Response, error) {
 	isHTTP := scheme == "http" || scheme == "https"
 	if isHTTP {
 		for k, vv := range req.Header {
-			if !httplex.ValidHeaderFieldName(k) {
+			if !httpguts.ValidHeaderFieldName(k) {
 				return nil, fmt.Errorf("net/http: invalid header field name %q", k)
 			}
 			for _, v := range vv {
-				if !httplex.ValidHeaderFieldValue(v) {
+				if !httpguts.ValidHeaderFieldValue(v) {
 					return nil, fmt.Errorf("net/http: invalid header field value %q for key %v", v, k)
 				}
 			}

src/vendor/golang_org/x/net/http/httpguts/httplex.go

@@ -2,12 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Package httplex contains rules around lexical matters of various
-// HTTP-related specifications.
-//
-// This package is shared by the standard library (which vendors it)
-// and x/net/http2. It comes with no API stability promise.
-package httplex
+package httpguts
 
 import (
 	"net"

src/vendor/golang_org/x/net/http/httpguts/httplex_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package httplex
+package httpguts
 
 import (
 	"testing"