Remove some redundancy in websocketconn naming.

Rename websocketconn.WebSocketConn to websocketconn.Conn, and
       websocketconn.NewWebSocketConn to websocketconn.New

Following the guidelines at
https://blog.golang.org/package-names#TOC_3%2e

common/websocketconn/websocketconn.go

@@ -9,13 +9,13 @@ import (
 
 // An abstraction that makes an underlying WebSocket connection look like an
 // io.ReadWriteCloser.
-type WebSocketConn struct {
+type Conn struct {
 	Ws *websocket.Conn
 	r  io.Reader
 }
 
 // Implements io.Reader.
-func (conn *WebSocketConn) Read(b []byte) (n int, err error) {
+func (conn *Conn) Read(b []byte) (n int, err error) {
 	var opCode int
 	if conn.r == nil {
 		// New message
@@ -43,7 +43,7 @@ func (conn *WebSocketConn) Read(b []byte) (n int, err error) {
 }
 
 // Implements io.Writer.
-func (conn *WebSocketConn) Write(b []byte) (n int, err error) {
+func (conn *Conn) Write(b []byte) (n int, err error) {
 	var w io.WriteCloser
 	if w, err = conn.Ws.NextWriter(websocket.BinaryMessage); err != nil {
 		return
@@ -56,15 +56,15 @@ func (conn *WebSocketConn) Write(b []byte) (n int, err error) {
 }
 
 // Implements io.Closer.
-func (conn *WebSocketConn) Close() error {
+func (conn *Conn) Close() error {
 	// Ignore any error in trying to write a Close frame.
 	_ = conn.Ws.WriteControl(websocket.CloseMessage, []byte{}, time.Now().Add(time.Second))
 	return conn.Ws.Close()
 }
 
-// Create a new WebSocketConn.
-func NewWebSocketConn(ws *websocket.Conn) WebSocketConn {
-	var conn WebSocketConn
+// Create a new Conn.
+func New(ws *websocket.Conn) Conn {
+	var conn Conn
 	conn.Ws = ws
 	return conn
 }

proxy-go/snowflake.go

@@ -285,7 +285,7 @@ func datachannelHandler(conn *webRTCConn, remoteAddr net.Addr) {
 		log.Printf("error dialing relay: %s", err)
 		return
 	}
-	wsConn := websocketconn.NewWebSocketConn(ws)
+	wsConn := websocketconn.New(ws)
 	log.Printf("connected to relay")
 	defer wsConn.Close()
 	CopyLoop(conn, &wsConn)

server/server.go

@@ -52,7 +52,7 @@ additional HTTP listener on port 80 to work with ACME.
 }
 
 // Copy from WebSocket to socket and vice versa.
-func proxy(local *net.TCPConn, conn *websocketconn.WebSocketConn) {
+func proxy(local *net.TCPConn, conn *websocketconn.Conn) {
 	var wg sync.WaitGroup
 	wg.Add(2)
 
@@ -107,7 +107,7 @@ func (handler *HTTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	conn := websocketconn.NewWebSocketConn(ws)
+	conn := websocketconn.New(ws)
 	defer conn.Close()
 
 	// Pass the address of client as the remote address of incoming connection

server/server_test.go

@@ -60,7 +60,7 @@ type StubHandler struct{}
 func (handler *StubHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	ws, _ := upgrader.Upgrade(w, r, nil)
 
-	conn := websocketconn.NewWebSocketConn(ws)
+	conn := websocketconn.New(ws)
 	defer conn.Close()
 
 	//dial stub OR
@@ -90,7 +90,7 @@ func Test(t *testing.T) {
 			So(err, ShouldBeNil)
 
 			ws, _, err := websocket.DefaultDialer.Dial("ws://localhost:8888", nil)
-			wsConn := websocketconn.NewWebSocketConn(ws)
+			wsConn := websocketconn.New(ws)
 			So(err, ShouldEqual, nil)
 			So(wsConn, ShouldNotEqual, nil)
 
@@ -133,7 +133,7 @@ func Test(t *testing.T) {
 
 			ws, _, err := websocket.DefaultDialer.Dial("ws://localhost:8888", nil)
 			So(err, ShouldEqual, nil)
-			wsConn := websocketconn.NewWebSocketConn(ws)
+			wsConn := websocketconn.New(ws)
 			So(wsConn, ShouldNotEqual, nil)
 
 			wsConn.Write([]byte("Hello"))