基於Android Okhttp3 webSocket 錯誤重連和保證長連接(兩個線程交替進行)

這幾天遇到一個需求---使用websock進行實時通信，並且保證長時間連接。

採取的方案是利用線程來定時進行webSocket重新連接(即斷開後重新連接)。這種方法覺得比較笨，但是這種方法比較有效。

1、定時連接線程，比較簡單的一個繼承Thread的類

public class ReconnectionWSThread extends Thread {

    public volatile boolean isStop = false; //停止線程標記

    @Override
    public void run() {
        super.run();

        while (!isStop) {
            try {
                LogUtils.e("ReconnectionWSThread", " --- ReconnectionWSRThread 啓動 ");
                Thread.sleep(10 * 60 * 1000);              
                //重連操作
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

2、錯誤重連線程

public class ReconnectionWSErrorThread extends Thread {

    public volatile boolean isStop = false; //停止線程標記

    @Override
    public void run() {
        super.run();

        while (!isStop) {
            try {

                LogUtils.e("ReconnectionWSErrorThread", " --- ReconnectionWSErrorThread 啓動 ");

                Thread.sleep(2 * 1000); 

                //重連操作

            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

正常情況下的長連接線程(ReconnectionWSThread)，在一個合適的位置開啓就可以，主要與錯誤重連(ReconnectionWSErrorThread)交替運行。

在okhttp上支持websocket通信：如果通信過程中出現錯誤或者連接斷開會回掉在onFailure方法中

    @Override
    public void onFailure(WebSocket webSocket, Throwable t, Response response) {
        super.onFailure(webSocket, t, response);
        BaseApplication.isReconnect = true;//錯誤重連

        BaseApplication.BaseReconnectionWSThread.isStop = true; //停止長連接線程 

        if (BaseApplication.isErrorReconnect) { //第一次進入onFailure回掉
            BaseApplication.BaseReconnectionWSErrorThread.start(); //啓動錯誤重連
            BaseApplication.isErrorReconnect = false;
        } else {
            if (!BaseApplication.BaseReconnectionWSErrorThread.isAlive()) { //判斷線程run方法是否還在運行中，注意當run方法運行結束後，相當於線程結束 
                BaseApplication.BaseReconnectionWSErrorThread = new ReconnectionWSErrorThread(); //啓動新的線程 
                BaseApplication.BaseReconnectionWSErrorThread.start();
            }
        }
    }

在onMessage回掉中：

        //錯誤重連
        if (BaseApplication.isReconnect) {

            BaseApplication.BaseReconnectionWSErrorThread.isStop = true;

            BaseApplication.isReconnect = false;

            BaseApplication.BaseReconnectionWSThread =  new ReconnectionWSThread(); //重新啓動線程
            BaseApplication.BaseReconnectionWSThread.start();
        }

BaseApplition：

public class BaseApplication extends Application {

    public static boolean isReconnect = false;
    public static boolean isErrorReconnect = true;
    public static ReconnectionWSThread BaseReconnectionWSThread;
    public static ReconnectionWSErrorThread BaseReconnectionWSErrorThread;

    @Override
    public void onCreate() {

        BaseReconnectionWSThread = new ReconnectionWSThread();
        BaseReconnectionWSErrorThread = new ReconnectionWSErrorThread();
        super.onCreate();
    }

    public static BaseRequest getBaseRequestInstance(){

        return BaseRequestInstance;
    }
}

附：如果有更好的方法歡迎討論指正，感謝感謝！！！