nodejs学习：net模块

官方API文档地址：https://nodejs.org/api/net.html

1. 创建一个server.js
   

   var net = require('net');
   var PORT  = 8099;
   var HOST = '127.0.0.1'
   
   var server = net.createServer();
   server.on('connection', function(client) {
       client.name = client.remoteAddress + ':' + client.remotePort
       client.write('Hi ' + client.name + '!
   ');
   
       client.on('data', function(data) {
           client.write(data);
       })
       client.on('end', function() {
           client.write('Bye ' + client.name + '!
   ');
       })
   
       client.on('error', function(e) {
           console.log('error:'+ e.message);
       })
   });
   
   server.on('listening', function() {
       console.log('Server is listening on port', PORT);
   });
   server.listen(PORT,HOST);

2. 连接