add conn.go:(gettyWSConn)handlePing & conn.go:(gettyWSConn)handlePong

conn.go

@@ -184,11 +184,26 @@ func newGettyWSConn(conn *websocket.Conn) *gettyWSConn {
 			peer:  peerAddr,
 		},
 	}
+	conn.SetPingHandler(gettyWSConn.handlePing)
 	conn.SetPongHandler(gettyWSConn.handlePong)
 
 	return gettyWSConn
 }
 
+func (this *gettyWSConn) handlePing(message string) error {
+	err := this.conn.WriteMessage(websocket.PongMessage, []byte(message))
+	if err == websocket.ErrCloseSent {
+		err = nil
+	} else if e, ok := err.(net.Error); ok && e.Temporary() {
+		err = nil
+	}
+	if err == nil {
+		this.UpdateActive()
+	}
+
+	return err
+}
+
 func (this *gettyWSConn) handlePong(string) error {
 	this.UpdateActive()
 	return nil

dev.list

@@ -11,6 +11,11 @@
 ## develop history ##
 ---
 
+- 2016/10/14
+    > 1 add conn.go:(gettyWSConn)handlePing
+    >
+    > 2 add conn.go:(gettyWSConn)handlePong
+
 - 2016/10/13
     > 1 add conn.go:(gettyWSConn)writePing which is invoked automatically in session.go:(Session)handleLoop
     >