rpc/ws: switch to golang.org/x/net

code.google.com/p/go.net is deprecated and will cause
problems in future versions of Go.

Godeps/Godeps.json

@@ -30,11 +30,6 @@
 			"Comment": "null-236",
 			"Rev": "69e2a90ed92d03812364aeb947b7068dc42e561e"
 		},
-		{
-			"ImportPath": "code.google.com/p/go.net/websocket",
-			"Comment": "null-173",
-			"Rev": "4231557d7c726df4cf9a4e8cdd8a417c8c200bdb"
-		},
 		{
 			"ImportPath": "code.google.com/p/snappy-go/snappy",
 			"Comment": "null-15",
@@ -105,6 +100,10 @@
 			"ImportPath": "golang.org/x/crypto/pbkdf2",
 			"Rev": "4ed45ec682102c643324fae5dff8dab085b6c300"
 		},
+		{
+			"ImportPath": "golang.org/x/net/websocket",
+			"Rev": "59b0df9b1f7abda5aab0495ee54f408daf182ce7"
+		},
 		{
 			"ImportPath": "gopkg.in/check.v1",
 			"Rev": "64131543e7896d5bcc6bd5a76287eb75ea96c673"

Godeps/_workspace/src/golang.org/x/net/websocket/client.go

@@ -64,6 +64,20 @@ func Dial(url_, protocol, origin string) (ws *Conn, err error) {
 	return DialConfig(config)
 }
 
+var portMap = map[string]string{
+	"ws":  "80",
+	"wss": "443",
+}
+
+func parseAuthority(location *url.URL) string {
+	if _, ok := portMap[location.Scheme]; ok {
+		if _, _, err := net.SplitHostPort(location.Host); err != nil {
+			return net.JoinHostPort(location.Host, portMap[location.Scheme])
+		}
+	}
+	return location.Host
+}
+
 // DialConfig opens a new client connection to a WebSocket with a config.
 func DialConfig(config *Config) (ws *Conn, err error) {
 	var client net.Conn
@@ -75,10 +89,10 @@ func DialConfig(config *Config) (ws *Conn, err error) {
 	}
 	switch config.Location.Scheme {
 	case "ws":
-		client, err = net.Dial("tcp", config.Location.Host)
+		client, err = net.Dial("tcp", parseAuthority(config.Location))
 
 	case "wss":
-		client, err = tls.Dial("tcp", config.Location.Host, config.TlsConfig)
+		client, err = tls.Dial("tcp", parseAuthority(config.Location), config.TlsConfig)
 
 	default:
 		err = ErrBadScheme

Godeps/_workspace/src/golang.org/x/net/websocket/exampledial_test.go

@@ -8,7 +8,7 @@ import (
 	"fmt"
 	"log"
 
-	"code.google.com/p/go.net/websocket"
+	"golang.org/x/net/websocket"
 )
 
 // This example demonstrates a trivial client.

Godeps/_workspace/src/golang.org/x/net/websocket/examplehandler_test.go

@@ -8,7 +8,7 @@ import (
 	"io"
 	"net/http"
 
-	"code.google.com/p/go.net/websocket"
+	"golang.org/x/net/websocket"
 )
 
 // Echo the data received on the WebSocket.

Godeps/_workspace/src/golang.org/x/net/websocket/websocket_test.go

@@ -339,3 +339,76 @@ func TestSmallBuffer(t *testing.T) {
 	}
 	conn.Close()
 }
+
+var parseAuthorityTests = []struct {
+	in  *url.URL
+	out string
+}{
+	{
+		&url.URL{
+			Scheme: "ws",
+			Host:   "www.google.com",
+		},
+		"www.google.com:80",
+	},
+	{
+		&url.URL{
+			Scheme: "wss",
+			Host:   "www.google.com",
+		},
+		"www.google.com:443",
+	},
+	{
+		&url.URL{
+			Scheme: "ws",
+			Host:   "www.google.com:80",
+		},
+		"www.google.com:80",
+	},
+	{
+		&url.URL{
+			Scheme: "wss",
+			Host:   "www.google.com:443",
+		},
+		"www.google.com:443",
+	},
+	// some invalid ones for parseAuthority. parseAuthority doesn't
+	// concern itself with the scheme unless it actually knows about it
+	{
+		&url.URL{
+			Scheme: "http",
+			Host:   "www.google.com",
+		},
+		"www.google.com",
+	},
+	{
+		&url.URL{
+			Scheme: "http",
+			Host:   "www.google.com:80",
+		},
+		"www.google.com:80",
+	},
+	{
+		&url.URL{
+			Scheme: "asdf",
+			Host:   "127.0.0.1",
+		},
+		"127.0.0.1",
+	},
+	{
+		&url.URL{
+			Scheme: "asdf",
+			Host:   "www.google.com",
+		},
+		"www.google.com",
+	},
+}
+
+func TestParseAuthority(t *testing.T) {
+	for _, tt := range parseAuthorityTests {
+		out := parseAuthority(tt.in)
+		if out != tt.out {
+			t.Errorf("got %v; want %v", out, tt.out)
+		}
+	}
+}

rpc/ws/server.go

@@ -21,10 +21,10 @@ import (
 	"net"
 	"net/http"
 
-	"code.google.com/p/go.net/websocket"
 	"github.com/ethereum/go-ethereum/logger"
 	"github.com/ethereum/go-ethereum/rpc"
 	"github.com/ethereum/go-ethereum/xeth"
+	"golang.org/x/net/websocket"
 )
 
 var wslogger = logger.NewLogger("RPC-WS")