Websockify Server in Java

This is a proof of concept implementation of a Websockify server in Java. The server acts as a bridge between WebSockets and TCP connections, allowing for bidirectional communication between WebSocket clients and TCP servers.

✨ Features

• WebSocket to TCP bridge:
  • The server accepts WebSocket connections and forwards the received messages to a specified TCP server.
• TCP to WebSocket bridge:
  • The server listens for incoming TCP connections and relays the received data to the WebSocket clients.

✅ Software tested

• noVNC (HTML5 VNC Client, works)

📜 Getting Started

To use this Websockify server, follow the steps below:

1. Clone the repository: git clone https://github.com/morihofi/WebsockifyJava
2. Open it in your favorite IDE

Tunnel TCP to WebSocket

public static void main(String[] args) {
        //Websocket server settings
        String wsHost = "localhost";
        int wsPort = 8090;

        WebSocketServer server = new WebsockifyServer(new InetSocketAddress(wsHost, wsPort), "192.168.178.1", 80);
        server.run();
    }

This tunnels traffic from 192.168.178.1:80/TCP to a Websocket running on Port 8090 on your machine

Tunnel WebSocket to TCP

    public static void main(String[] args) throws IOException {
        String websocketUrl = "ws://localhost:8090";

        ServerSocket serverSocket = new ServerSocket(7070);

        while (true){
            try {

                Socket socket = serverSocket.accept();
                new Thread(() -> {
                    //Handle connection in seperate Thread
                    try {
                        WebsockifyClient client = new WebsockifyClient(new URI(websocketUrl), socket);
                        client.run();
                    } catch (URISyntaxException e) {
                    }

                }).start();

            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }

    }

This connects to ws://localhost:8090 and opens a TCP Socket on your machine on port 7070