nodejs实现一个支持跨域访问的websocket例子并给出客户端接收的例子

日期: 2025-01-16 14:49:34

标签: 教育

服务端代码：

const WebSocket = require('ws');

const server = new WebSocket.Server({ port: 8080 });

server.on('connection', (socket) => {
  console.log('Client connected');

  socket.on('message', (message) => {
    console.log(`Received message: ${message}`);

    // Echo the message back to the client
    socket.send(`You said: ${message}`);
  });

  socket.on('close', () => {
    console.log('Client disconnected');
  });
});

console.log('WebSocket server started');

客户端代码：

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>WebSocket client</title>
</head>
<body>
  <script>
    const socket = new WebSocket('ws://localhost:8080');

    socket.addEventListener('open', (event) => {
      console.log('Connected to WebSocket server');

      // Send a message to the server
      socket.send('Hello, server!');
    });

    socket.addEventListener('message', (event) => {
      console.log(`Received message: ${event.data}`);
    });

    socket.addEventListener('close', (event) => {
      console.log('Disconnected from WebSocket server');
    });
  </script>
</body>
</html>

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