Golang Conn.ReadMessage方法代碼示例

func (w *WebsocketController) listenForIncomingData(connection *websocket.Conn, client *WebsocketClient, disconnect chan bool) {
	for {
		mt, message, err := connection.ReadMessage()

		if mt == websocket.CloseMessage {
			disconnect <- true
		}
		if _, ok := err.(*websocket.CloseError); ok {
			disconnect <- true
		}

		if err != nil {
			w.logger.Println("warning: read message error:", err)
			continue
		}
		if mt != websocket.TextMessage && mt != websocket.CloseMessage {
			w.logger.Println("warning: recieved unsupported message: ", mt, message)
			continue
		}

		if mt == websocket.TextMessage {
			w.Received() <- ReceivedData{client, message}
		}
	}
}

func (self *remoteService) run(ws *websocket.Conn) error {
	for {
		mt, msg, err := ws.ReadMessage()
		if err != nil {
			fmt.Printf("remoteService.run: %#v\n", err)
			break
		}

		if mt != websocket.BinaryMessage {
			continue
		}

		cmd := cmdResult{}
		if err := json.NewDecoder(bytes.NewReader(msg)).Decode(&cmd); err != nil {
			return err
		}

		if cmd.Id == nil {
			if err := self.handleEvent(cmd.Back, cmd.Sid, stream.Event([]byte(cmd.Data))); err != nil {
				return err
			}
		} else {
			if err := self.handleCmdRes(*cmd.Id, cmd.Data); err != nil {
				return err
			}
		}
	}
	return nil
}

func (r *RancherService) pipeLogs(container *rancherClient.Container, conn *websocket.Conn) {
	defer conn.Close()

	log_name := strings.TrimPrefix(container.Name, r.context.ProjectName+"_")
	logger := r.context.LoggerFactory.Create(log_name)

	for {
		messageType, bytes, err := conn.ReadMessage()
		if messageType != websocket.TextMessage {
			continue
		}

		if err == io.EOF {
			return
		} else if err != nil {
			logrus.Errorf("Failed to read log: %v", err)
			return
		}

		if len(bytes) <= 3 {
			continue
		}

		if bytes[len(bytes)-1] != '\n' {
			bytes = append(bytes, '\n')
		}
		message := bytes[3:]

		if "01" == string(bytes[:2]) {
			logger.Out(message)
		} else {
			logger.Err(message)
		}
	}
}

func (w *WebsocketServer) streamWebsocket(websocketSink *websocket.WebsocketSink, websocketConnection *gorilla.Conn, register func(sinks.Sink) bool, unregister func(sinks.Sink)) {
	register(websocketSink)
	defer unregister(websocketSink)

	go websocketConnection.ReadMessage()
	server.NewKeepAlive(websocketConnection, w.keepAliveInterval).Run()
}

func (np *NatsProxy) activateWSProxySubject(conn *websocket.Conn, wsID string) {
	np.addToWSMapper(conn, wsID)
	np.conn.Subscribe("WS_OUT"+wsID, func(m *nats.Msg) {
		err := conn.WriteMessage(websocket.TextMessage, m.Data)
		if err != nil {
			log.Println("Error writing a message", err)
		}
	})
	go func() {
		for {
			if _, p, err := conn.ReadMessage(); err == nil {
				np.conn.Publish("WS_IN"+wsID, p)
			} else {
				np.removeFromWSMapper(conn, wsID)
				conn.Close()
				// If websocket is closed normally RFC6455
				// code 1000, then no error logged
				if !websocket.IsCloseError(err, websocket.CloseNormalClosure) {
					logWebsocketError(wsID, err)
				}
				break
			}
		}
	}()
}

func jionToChatRoom(uname string, ws *websocket.Conn) {

	// Join chat room.
	Join(uname, ws)
	defer Leave(uname)

	// Message receive loop.
	for {
		_, p, err := ws.ReadMessage()
		if err != nil {
			return
		}
		//=======deal with chat====
		// js, err := simplejson.NewJson(p)
		// if err != nil {
		// 	panic(err.Error())
		// }
		chat := new(models.ChatBean)
		json.Unmarshal(p, chat)

		//=====================
		if chat.Type == 1 || len(chat.To) > 0 {
			publish <- newEvent(models.EVENT_CHAT, uname, string(p))
		} else {
			publish <- newEvent(models.EVENT_MESSAGE, uname, string(p))
		}

	}
}

func primeRequestMainLoop(ws *websocket.Conn) {
	msgType, msg, err := ws.ReadMessage()
	for ; err == nil && msgType == websocket.TextMessage; msgType, msg, err = ws.ReadMessage() {
		req := string(msg)
		fields := strings.Fields(req)
		if len(fields) == 0 {
			err = ws.WriteMessage(websocket.TextMessage, []byte(warnArgCount))
		} else {
			method := strings.ToUpper(fields[0])
			switch method {
			case "?":
				err = ws.WriteMessage(msgType, []byte(helpMsg))
			case "TEST":
				if len(fields) > 1 {
					err = OnTest(ws, fields[1:])
				} else {
					err = ws.WriteMessage(msgType, []byte("ERROR: nothing to test"))
				}
			case "LIST":
				err = OnList(ws, fields[1:])
			case "EXIT":
				fallthrough
			case "QUIT":
				fallthrough
			case "CLOSE":
				fmt.Fprintln(os.Stderr, "INFO: Closing Websocket...")
				break
			default:
				err = ws.WriteMessage(msgType, []byte(errorUnknownCmd))
			}
		}
		err = ws.WriteMessage(websocket.TextMessage, []byte(eotMsg))
	}
}

func pipe_to_net(netConn net.Conn, wsConn *websocket.Conn, protocolType int, stopChan chan int) {
	for {
		select {
		case <-stopChan:
			return
		default:
			{
				_, p, err := wsConn.ReadMessage()
				if err != nil {
					stopChan <- 1
					return
				}
				if protocolType == websocket.BinaryMessage {
					_, err = netConn.Write(p)
					if err != nil {
						stopChan <- 1
						return
					}
				} else if protocolType == websocket.TextMessage {
					data := make([]byte, base64.StdEncoding.DecodedLen(len(p)))
					n, err := base64.StdEncoding.Decode(data, p)
					if err != nil {
						stopChan <- 1
						return
					}
					_, err = netConn.Write(data[:n])
					if err != nil {
						stopChan <- 1
						return
					}
				}
			}
		}
	}
}

func readMessages(ws *websocket.Conn, rc chan<- error, handler Handler) (e error) {
	defer func() {
		rc <- e
	}()

	for {
		_, msg, err := ws.ReadMessage()
		if err != nil {
			return fmt.Errorf("Error reading from websocket: %s", err)
		}

		var event model.WatchEvent
		err = json.Unmarshal(msg, &event)
		if err != nil {
			return fmt.Errorf("Error parsing event: %s", err)
		}
		log.Infof("Received event: [%s]", msg)

		err = handler.Handle(event)
		if err != nil {
			return fmt.Errorf("Error handling event: %s", err)
		}

	}
}

func checkResponse(checkFor map[string]string, ws *websocket.Conn, c *check.C) string {
	for count := 0; count < 20; count++ {
		_, m, err := ws.ReadMessage()
		if err != nil {
			// ws closed
			if len(checkFor) != 0 {
				c.Fatal("Didn't find all keys before ws was closed: ", checkFor)
			}
			return ""
		}
		dst := make([]byte, base64.StdEncoding.EncodedLen(len(m)))
		_, err = base64.StdEncoding.Decode(dst, m)
		if err != nil {
			c.Fatal(err)
		}
		msg := string(dst)
		for k, _ := range checkFor {
			if strings.Contains(msg, k) {
				delete(checkFor, k)
			}
		}
		if len(checkFor) == 0 {
			return msg
		}
	}

	if len(checkFor) != 0 {
		c.Fatal("Didn't find: ", checkFor)
	}

	return ""
}

func datawsHandler(w http.ResponseWriter, r *http.Request) {
	var websocket *ws.Conn
	var upgradeerr error
	websocket, upgradeerr = upgrader.Upgrade(w, r, nil)
	if upgradeerr != nil {
		w.Write([]byte(fmt.Sprintf("Could not upgrade HTTP connection to WebSocket: %v\n", upgradeerr)))
		return
	}

	cw := ConnWrapper{
		Writing: &sync.Mutex{},
		Conn:    websocket,
	}

	websocket.SetReadLimit(MAX_REQSIZE)

	for {
		_, payload, err := websocket.ReadMessage()

		if err != nil {
			return // Most likely the connection was closed or the message was too big
		}

		uuidBytes, startTime, endTime, pw, token, echoTag, success := parseDataRequest(string(payload), &cw)

		if success {
			var loginsession *LoginSession
			if token != "" {
				loginsession = validateToken(token)
				if loginsession == nil {
					w.Write([]byte(ERROR_INVALID_TOKEN))
					return
				}
			}
			if hasPermission(loginsession, uuidBytes) {
				dr.MakeDataRequest(uuidBytes, startTime, endTime, uint8(pw), &cw)
			} else {
				cw.GetWriter().Write([]byte("[]"))
			}
		}
		if cw.CurrWriter != nil {
			cw.CurrWriter.Close()
		}

		writer, err := websocket.NextWriter(ws.TextMessage)
		if err != nil {
			fmt.Println("Could not echo tag to client")
		}

		if cw.CurrWriter != nil {
			_, err = writer.Write([]byte(echoTag))
			if err != nil {
				fmt.Println("Could not echo tag to client")
			}
			writer.Close()
		}

		cw.Writing.Unlock()
	}
}

func (handler *handler) proxyConnectionTo(server *websocket.Conn) {
	handler.logger.Debugf("Output Proxy: Starting to listen to server %v", server.RemoteAddr().String())

	var logMessage []byte
	defer server.Close()
	count := 0
	for {
		_, data, err := server.ReadMessage()

		if err != nil {
			handler.logger.Errorf("Output Proxy: Error reading from the server - %v - %v", err, server.RemoteAddr().String())
			handler.Done()
			return
		}

		handler.logger.Debugf("Output Proxy: Got message from server %v bytes", len(logMessage))

		count++

		err = handler.writeMessage(data)

		if err != nil {
			handler.logger.Errorf("Output Proxy: Error writing to client websocket - %v", err)
			return
		}
	}
}

func socketRead(c *websocket.Conn) {
	for {
		_, r, err := c.ReadMessage()
		internal.Check(err)
		fmt.Print(color(string(r)))
	}
}

func (bot *Bot) loop(conn *websocket.Conn) bool {
	defer conn.Close()
	for {
		messageType, bytes, err := conn.ReadMessage()
		if err != nil {
			// ReadMessage returns an error if the connection is closed
			return false
		}
		if messageType == websocket.BinaryMessage {
			continue // ignore binary messages
		}
		event, err := unpackJSON(bytes)
		if err != nil {
			log.WithFields(log.Fields{
				"raw bytes": bytes,
				"error":     err,
			}).Warn("message could not be unpacked")
			continue
		}
		log.WithFields(log.Fields{
			"event": event,
		}).Info("received event")
		eventType, ok := event["type"]
		if ok && eventType.(string) == "team_migration_started" {
			return true
		}
		wrappers := bot.handle(event)
		closeConnection := sendResponses(wrappers, conn)
		if closeConnection {
			return false
		}
	}
}

func (this *subServer) wsReadPump(clientGone chan struct{}, ws *websocket.Conn) {
	ws.SetReadLimit(this.wsReadLimit)
	ws.SetReadDeadline(time.Now().Add(this.wsPongWait))
	ws.SetPongHandler(func(string) error {
		ws.SetReadDeadline(time.Now().Add(this.wsPongWait))
		return nil
	})

	// if kateway shutdown while there are open ws conns, the shutdown will
	// wait 1m: this.subServer.wsPongWait
	for {
		_, message, err := ws.ReadMessage()
		if err != nil {
			if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway) {
				log.Warn("%s: %v", ws.RemoteAddr(), err)
			} else {
				log.Debug("%s: %v", ws.RemoteAddr(), err)
			}

			close(clientGone)
			break
		}

		log.Debug("ws[%s] read: %s", ws.RemoteAddr(), string(message))
	}
}