//Implement http.Handler
func (room *Room) ServeHTTP(w http.ResponseWriter, r *http.Request) {
log.Println("New room connection established")
/*Switch to WebSocket protocol*/
socket, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Println("Error serving Room:", err)
return
}
name := getName(w, r)
if len(name) == 0 {
log.Println("Error serving Room:", "bad user data")
errMsg := ws.FormatCloseMessage(ws.CloseUnsupportedData,
"Can not recognise user data")
socket.WriteMessage(ws.CloseMessage, errMsg)
socket.Close()
return
}
client := &Client{
Conn: socket,
Msg: make(chan *Message, MsgBufferSize),
Room: room,
Name: name,
}
room.Join <- client
// Leave after
defer func() { room.Leave <- client }()
go client.Write()
client.Read()
}
// echoCopy echoes messages from the client using io.Copy.
func echoCopy(w http.ResponseWriter, r *http.Request, writerOnly bool) {
conn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Println("Upgrade:", err)
return
}
defer conn.Close()
for {
mt, r, err := conn.NextReader()
if err != nil {
if err != io.EOF {
log.Println("NextReader:", err)
}
return
}
if mt == websocket.TextMessage {
r = &validator{r: r}
}
w, err := conn.NextWriter(mt)
if err != nil {
log.Println("NextWriter:", err)
return
}
if mt == websocket.TextMessage {
r = &validator{r: r}
}
if writerOnly {
_, err = io.Copy(struct{ io.Writer }{w}, r)
} else {
_, err = io.Copy(w, r)
}
if err != nil {
if err == errInvalidUTF8 {
conn.WriteControl(websocket.CloseMessage,
websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
time.Time{})
}
log.Println("Copy:", err)
return
}
err = w.Close()
if err != nil {
log.Println("Close:", err)
return
}
}
}
// echoReadAll echoes messages from the client by reading the entire message
// with ioutil.ReadAll.
func echoReadAll(w http.ResponseWriter, r *http.Request, writeMessage bool) {
conn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Println("Upgrade:", err)
return
}
defer conn.Close()
for {
mt, b, err := conn.ReadMessage()
if err != nil {
if err != io.EOF {
log.Println("NextReader:", err)
}
return
}
if mt == websocket.TextMessage {
if !utf8.Valid(b) {
conn.WriteControl(websocket.CloseMessage,
websocket.FormatCloseMessage(websocket.CloseInvalidFramePayloadData, ""),
time.Time{})
log.Println("ReadAll: invalid utf8")
}
}
if writeMessage {
err = conn.WriteMessage(mt, b)
if err != nil {
log.Println("WriteMessage:", err)
}
} else {
w, err := conn.NextWriter(mt)
if err != nil {
log.Println("NextWriter:", err)
return
}
if _, err := w.Write(b); err != nil {
log.Println("Writer:", err)
return
}
if err := w.Close(); err != nil {
log.Println("Close:", err)
return
}
}
}
}