android - BindException 地址已在使用中

Question

我的 serverThreadProc() 方法有问题。每当我运行它时，它都会抛出一个 BindException。认为 try block 的前两行可能存在问题。不知道我做错了什么。

private void serverThreadProc() {
    while (!this.stopRequested) {
        Socket sessionSocket = null;
        try {
            serverSocket = new ServerSocket(serverPort);
            sessionSocket = this.serverSocket.accept();
            InetAddress sourceAddress = sessionSocket.getInetAddress();
            Log.i(LOG_TAG, "Accepted new incoming connection ... "
                    + sourceAddress.toString());
            if (clientMap.containsKey(sourceAddress)) {
                ClientProcessor legacyProcessor = clientMap
                        .get(sourceAddress);
                legacyProcessor.shutdown();
            }
            ClientProcessor processor = new ClientProcessor(sessionSocket);
            processor.start();
            clientMap.put(sourceAddress, processor);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

public int start() {
    try {
        this.serverSocket = new ServerSocket(0);
        this.serverPort = this.serverSocket.getLocalPort();
        Log.i(LOG_TAG, "Server " + serverName + " started at "
                + this.serverSocket.getLocalSocketAddress());
    } catch (IOException ex) {
        Log.i(LOG_TAG, ex.toString());
    }

    this.serverThread.start();
    return this.serverPort;
}

public void stop() {
    try {
        stopRequested = true;
        if (this.serverSocket) {
            this.serverSocket.close();
        }
    } catch (IOException ex) {
        Log.i(LOG_TAG, ex.toString());
    }

    Log.i(LOG_TAG, "The server " + this.serverName + " has been stopped.");
}

这是代码生成的堆栈跟踪:

01-11 05:51:53.472: I/ConnectActivity(2151): IP Address:0
01-11 05:51:53.492: I/ServiceServer(2151): Server Whooznear started at /0.0.0.0:35434
01-11 05:51:53.522: I/ConnectActivity(2151): Started at 35434
01-11 05:51:53.542: W/System.err(2151): java.net.BindException: Address already in use
01-11 05:51:53.542: W/System.err(2151):     at org.apache.harmony.luni.platform.OSNetworkSystem.bind(Native Method)
01-11 05:51:53.542: W/System.err(2151):     at dalvik.system.BlockGuard$WrappedNetworkSystem.bind(BlockGuard.java:275)
01-11 05:51:53.571: W/System.err(2151):     at org.apache.harmony.luni.net.PlainSocketImpl.bind(PlainSocketImpl.java:165)
01-11 05:51:53.571: W/System.err(2151):     at java.net.ServerSocket.<init>(ServerSocket.java:123)
01-11 05:51:53.592: W/System.err(2151):     at java.net.ServerSocket.<init>(ServerSocket.java:74)
01-11 05:51:53.592: W/System.err(2151):     at com.whooznear.android.ServiceServer.serverThreadProc(ServiceServer.java:63)
01-11 05:51:53.592: W/System.err(2151):     at com.whooznear.android.ServiceServer.access$0(ServiceServer.java:58)
01-11 05:51:53.611: W/System.err(2151):     at com.whooznear.android.ServiceServer$1.run(ServiceServer.java:53)

Answer 1

您在过程 start() 中创建了 ServerSocket，然后在过程 serverThreadProc 中的相同端口上创建了新的 ServerSocket ()。在创建新的服务器套接字之前，您必须关闭旧的。或者使用其他端口。