2016-1108

websocket

• 原生socket
• Net下socket
• server端

  var net = require('net');
  var server = net.createServer((socket) => {
    //添加客户端到列表
    var name = clients.add(socket);
    //发送数据监听
    socket.on('data', (data) => {
      console.log(data.toString());
      clients.sendAll(socket, data);
    });
    //关闭监听
    socket.on('close', (data) => {
      console.log(data);
    })
  });

• client

  var net = require('net');
  //链接到服务端
  var client = net.connect({port:8000}, () => {
    console.log('链接成功');
  })
  //发送数据
  client.on('data', (data) => {
    console.log(data.toString());
  })
  //关闭连接
  client.on('end', () => {
    console.log('断开了');
  })

• express 使用socket eg: socket.io
• npm install socket.io