func EchoServer(ws *websocket.Conn) {
addr := ws.LocalAddr().String()
pfx := []byte("[" + addr + "] ")
log.Printf("ws connect on %s", addr)
// the following could be done with io.Copy(ws, ws)
// but I want to add some meta data
var msg = make([]byte, 1024)
for {
n, err := ws.Read(msg)
if err != nil && err != io.EOF {
log.Printf("ws error on %s. %s", addr, err)
break
}
_, err = ws.Write(append(pfx, msg[:n]...))
if err != nil && err != io.EOF {
log.Printf("ws error on %s. %s", addr, err)
break
}
}
log.Printf("ws disconnect on %s", addr)
}
