当浏览器失去互联网连接时,Websocket连接关闭

时间:2018-08-10 11:16:10

标签: javascript websocket webrtc apprtc

我正在尝试在我的项目中实现webrtc通信。我已使用appr.tc代码库进行开发。该代码库包含用于chrome&firefox浏览器的两个单独的websocket实现。

  if (isChromeApp()) {
            this.websocket_ = new RemoteWebSocket(this.wssUrl_, this.wssPostUrl_);
        } else {
            this.websocket_ = new WebSocket(this.wssUrl_);
        }

RemoteWebSocket

var RemoteWebSocket = function (wssUrl, wssPostUrl) {
    this.wssUrl_ = wssUrl;
    apprtc.windowPort.addMessageListener(this.handleMessage_.bind(this));
    this.sendMessage_({ action: Constants.WS_ACTION, wsAction: Constants.WS_CREATE_ACTION, wssUrl: wssUrl, wssPostUrl: wssPostUrl });
    this.readyState = WebSocket.CONNECTING;
};
RemoteWebSocket.prototype.sendMessage_ = function (message) {
    apprtc.windowPort.sendMessage(message);
};
RemoteWebSocket.prototype.send = function (data) {
    if (this.readyState !== WebSocket.OPEN) {
        throw "Web socket is not in OPEN state: " + this.readyState;
    }
    this.sendMessage_({ action: Constants.WS_ACTION, wsAction: Constants.WS_SEND_ACTION, data: data });
};
RemoteWebSocket.prototype.close = function () {
    if (this.readyState === WebSocket.CLOSING || this.readyState === WebSocket.CLOSED) {
        return;
    }
    this.readyState = WebSocket.CLOSING;
    this.sendMessage_({ action: Constants.WS_ACTION, wsAction: Constants.WS_CLOSE_ACTION });
};
RemoteWebSocket.prototype.handleMessage_ = function (message) {
    if (message.action === Constants.WS_ACTION && message.wsAction === Constants.EVENT_ACTION) {
        if (message.wsEvent === Constants.WS_EVENT_ONOPEN) {
            this.readyState = WebSocket.OPEN;
            if (this.onopen) {
                this.onopen();
            }
        } else {
            if (message.wsEvent === Constants.WS_EVENT_ONCLOSE) {
                this.readyState = WebSocket.CLOSED;
                if (this.onclose) {
                    this.onclose(message.data);
                }
            } else {
                if (message.wsEvent === Constants.WS_EVENT_ONERROR) {
                    if (this.onerror) {
                        this.onerror(message.data);
                    }
                } else {
                    if (message.wsEvent === Constants.WS_EVENT_ONMESSAGE) {
                        if (this.onmessage) {
                            this.onmessage(message.data);
                        }
                    } else {
                        if (message.wsEvent === Constants.WS_EVENT_SENDERROR) {
                            if (this.onsenderror) {
                                this.onsenderror(message.data);
                            }
                            console.log("ERROR: web socket send failed: " + message.data);
                        }
                    }
                }
            }
        }
    }
};

我不想关闭WebSocket连接。在Internet连接断开的情况下(3分钟内),RemoteWebSocket在chrome浏览器上工作正常。 3分钟内连接断开时,没有关闭事件发生。但是在firefox中,WebSocket连接将立即关闭。

有什么方法可以延迟javascript websocket libray中的close事件吗?

1 个答案:

答案 0 :(得分:0)

之所以这样,是因为Web套接字连接的设计方式是在没有网络时断开连接。我了解您不希望您的套接字断开连接,因此,一旦网络连接恢复,您将必须编写逻辑来重新连接。因此,基本上,您将必须跟踪与WebSocket关联的数据结构,并在尝试重新连接时将其还原。