Merge branch 'main' into http-proxy-tls-fix

.circleci/config.yml

@@ -16,8 +16,8 @@ jobs:
         type: string
         default: ""
     docker:
-      - image: "circleci/golang:<< parameters.version >>"
-    working_directory: /go/src/github.com/gorilla/websocket
+      - image: "cimg/go:<< parameters.version >>"
+    working_directory: /home/circleci/project/go/src/github.com/gorilla/websocket
     environment:
       GO111MODULE: "on"
       GOPROXY: "<< parameters.goproxy >>"
@@ -67,4 +67,4 @@ workflows:
       - test:
           matrix:
             parameters:
-              version: ["latest", "1.17", "1.16", "1.15", "1.14", "1.13", "1.12", "1.11"]
+              version: ["1.18", "1.17", "1.16"]

README.md

@@ -7,12 +7,6 @@ Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
 [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
 
 
----
-
-⚠️ **[The Gorilla WebSocket Package is looking for a new maintainer](https://github.com/gorilla/websocket/issues/370)**
-
----
-
 ### Documentation
 
 * [API Reference](https://pkg.go.dev/github.com/gorilla/websocket?tab=doc)

client.go

@@ -9,6 +9,7 @@ import (
 	"context"
 	"crypto/tls"
 	"errors"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"net"
@@ -324,14 +325,14 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 	}
 
 	netConn, err := netDial("tcp", hostPort)
+	if err != nil {
+		return nil, nil, err
+	}
 	if trace != nil && trace.GotConn != nil {
 		trace.GotConn(httptrace.GotConnInfo{
 			Conn: netConn,
 		})
 	}
-	if err != nil {
-		return nil, nil, err
-	}
 
 	defer func() {
 		if netConn != nil {
@@ -384,6 +385,17 @@ func (d *Dialer) DialContext(ctx context.Context, urlStr string, requestHeader h
 
 	resp, err := http.ReadResponse(conn.br, req)
 	if err != nil {
+		if d.TLSClientConfig != nil {
+			for _, proto := range d.TLSClientConfig.NextProtos {
+				if proto != "http/1.1" {
+					return nil, nil, fmt.Errorf(
+						"websocket: protocol %q was given but is not supported;"+
+							"sharing tls.Config with net/http Transport can cause this error: %w",
+						proto, err,
+					)
+				}
+			}
+		}
 		return nil, nil, err
 	}
 

client_server_test.go

@@ -1098,3 +1098,38 @@ func TestNetDialConnect(t *testing.T) {
 		}
 	}
 }
+func TestNextProtos(t *testing.T) {
+	ts := httptest.NewUnstartedServer(
+		http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}),
+	)
+	ts.EnableHTTP2 = true
+	ts.StartTLS()
+	defer ts.Close()
+
+	d := Dialer{
+		TLSClientConfig: ts.Client().Transport.(*http.Transport).TLSClientConfig,
+	}
+
+	r, err := ts.Client().Get(ts.URL)
+	if err != nil {
+		t.Fatalf("Get: %v", err)
+	}
+	r.Body.Close()
+
+	// Asserts that Dialer.TLSClientConfig.NextProtos contains "h2"
+	// after the Client.Get call from net/http above.
+	var containsHTTP2 bool = false
+	for _, proto := range d.TLSClientConfig.NextProtos {
+		if proto == "h2" {
+			containsHTTP2 = true
+		}
+	}
+	if !containsHTTP2 {
+		t.Fatalf("Dialer.TLSClientConfig.NextProtos does not contain \"h2\"")
+	}
+
+	_, _, err = d.Dial(makeWsProto(ts.URL), nil)
+	if err == nil {
+		t.Fatalf("Dial succeeded, expect fail ")
+	}
+}