Snippet from WebSocket RFC:
To Start the WebSocket Closing Handshake with a status code (Section 7.4) /code/ and an optional close reason (Section 7.1.6) /reason/, an endpoint MUST send a Close control frame, as described in Section 5.5.1, whose status code is set to /code/ and whose close reason is set to /reason/. Once an endpoint has both sent and received a Close control frame, that endpoint SHOULD Close the WebSocket Connection as defined in Section 7.1.1.
I am trying to do the Close Handshake using Gorilla WebSocket package with the following code:
Server:
// Create upgrader function
conn, err := upgrader.Upgrade(w, r, nil)
// If there is an error stop everything.
if err != nil {
fmt.Println(err)
return
}
for {
// Read Messages
_, _, err := conn.ReadMessage()
// Client is programmed to send a close frame immediately...
// When reading close frame resend close frame with same
// reason and code
conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(1000, "woops"))
fmt.Println(err)
break
}
Client:
d := &websocket.Dialer{}
conn, _, err := d.Dial("ws://localhost:8080", nil)
if err != nil {
fmt.Println(err)
return
}
go func() {
for {
// Read Messages
_, _, err := conn.ReadMessage()
if c, k := err.(*websocket.CloseError); k {
if(c.Code == 1000) {
// Never entering since c.Code == 1005
fmt.Println(err)
break
}
}
}
}()
conn.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(1000, "woops"))
for {}
The server is reading the Close Frame as expected outputting the following:
websocket: close 1000 (normal): woops
However the client is like its stopping to read once it sends a close message. The ReadMessage
continue to return error 1005. What am I doing wrong?