原生nodejs使用websocket

Posted 2020-10-29

1. 安装：

   npm  install  ws

2. 服务端（nodejs）：

   var WebSocketServer = require(‘ws‘).Server,
   wss = new WebSocketServer({ port: 8080 });
   wss.on(‘connection‘, function (ws) {
   console.log(‘client connected‘);
   ws.on(‘message‘, function (message) {
       console.log(message);
   });
   });

3. 客户端：

   <script>
   var ws = new WebSocket("ws://localhost:8080");
   ws.onopen = function (e) {
       console.log(‘Connection to server opened‘);
       sendMessage();
   }
   function sendMessage() {
       ws.send(‘hello‘);
   }
   </script>

4. 测试：