为什么我的套接字在握手后关闭，我该如何解决？

Question

我正在尝试将一个网站连接到我的 java 插件（在 minecraft 中）并让它们进行通信和播放音频。当我尝试发送已连接的消息时。服务器在启用插件时启动。

代码：当站点连接到插件时执行。

Socket client = AudioServer.getServer().accept();
            client.setKeepAlive(true);
            client.setTcpNoDelay(true);
            
            BufferedReader input = new BufferedReader(new InputStreamReader(client.getInputStream()));
            PrintWriter output = new PrintWriter(client.getOutputStream());

            String line;
            String key = "";
            while (true) {
                line = input.readLine();
                if(line.startsWith("Sec-WebSocket-Key: ")) {
                    key = line.split(" ")[1];
                }
                if (line == null || line.isEmpty())
                    break;
            }
            output.println("HTTP/1.1 101 Switching Protocols");
            output.println("Upgrade: websocket");
            output.println("Connection: Upgrade");
            output.println("Sec-WebSocket-Accept: " + encode(key));
            output.println();
            output.flush();
            input.close();
            
            AudioClient ac = new AudioClient(client);

    public AudioClient(Socket client) {
    try {           
        this.Client = client;
        this.conn = false;
        
        client.setKeepAlive(true);
        client.setTcpNoDelay(true);
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    
    Thread t = new Thread(new AudioReceiver(this));
    t.start();
    
    this.sendData("connected");
}

控制台：

[10:06:34] [Thread-315/WARN]: java.net.SocketException: Socket is closed
[10:06:34] [Thread-315/WARN]:   at java.net.Socket.setKeepAlive(Socket.java:1309)
[10:06:34] [Thread-315/WARN]:   at ev.Audio.AudioClient.<init>(AudioClient.java:23)
[10:06:34] [Thread-315/WARN]:   at ev.Audio.AudioConnection.run(AudioConnection.java:42)
[10:06:34] [Thread-315/WARN]:   at java.lang.Thread.run(Thread.java:748)
[10:06:34] [Thread-315/WARN]: java.net.SocketException: Socket is closed
[10:06:34] [Thread-315/WARN]:   at java.net.Socket.getOutputStream(Socket.java:943)
[10:06:34] [Thread-315/WARN]:   at ev.Audio.AudioClient.sendData(AudioClient.java:42)
[10:06:34] [Thread-315/WARN]:   at ev.Audio.AudioClient.<init>(AudioClient.java:33)
[10:06:34] [Thread-315/WARN]:   at ev.Audio.AudioConnection.run(AudioConnection.java:42)
[10:06:34] [Thread-315/WARN]:   at java.lang.Thread.run(Thread.java:748)

Answer 1

使用 input.close(); 关闭 InputReader 时，您也关闭了底层 Socket 连接。

正如您在问题中看到的，您不能在不关闭 Socket 的情况下关闭 BufferedReader。您唯一的选择是将 BufferedReader 传递给您的 AudioClient，或者使用 DataInputStream/BufferedInputStream 从中读取数据。

为什么我的套接字在握手后关闭，我该如何解决？

Why did my socket close after the handshake and how can I fix this?

java

webserver

websocket

minecraft