About the simple communication function between nodejs socket server and client

This article mainly introduces the simple communication function between nodejs socket server and client in detail. It has certain reference value. Interested friends can refer to it.

The example of this article describes the use of node through node. The .js net module implements the simple communication function between the nodejs socket server and the client, and can be used as the client's port monitoring of the server and event receipt.

Server-side code

var net = require('net');
//模块引入
var listenPort = 8080;//监听端口
var server = net.createServer(function(socket){
 // 创建socket服务端
 console.log('connect: ' +
  socket.remoteAddress + ':' + socket.remotePort);
 socket.setEncoding('binary');
 //接收到数据
 socket.on('data',function(data){
  console.log('client send:' + data);
 });
socket.write('Hello client!\r\n');
 // socket.pipe(socket);
 //数据错误事件
 socket.on('error',function(exception){
  console.log('socket error:' + exception);
  socket.end();
 });
 //客户端关闭事件
 socket.on('close',function(data){
  console.log('client closed!');
   // socket.remoteAddress + ' ' + socket.remotePort);
 });
}).listen(listenPort);
//服务器监听事件
server.on('listening',function(){
 console.log("server listening:" + server.address().port);
});
//服务器错误事件
server.on("error",function(exception){
 console.log("server error:" + exception);
});

Client-side code

var net = require('net');
var port = 8080;
var host = '127.0.0.1';
var client= new net.Socket();
//创建socket客户端
client.setEncoding('binary');
//连接到服务端
client.connect(port,host,function(){
 client.write('hello server');
 //向端口写入数据到达服务端
});
client.on('data',function(data){
 console.log('from server:'+ data);
 //得到服务端返回来的数据
});
client.on('error',function(error){
//错误出现之后关闭连接
 console.log('error:'+error);
 client.destory();
});
client.on('close',function(){
//正常关闭连接
 console.log('Connection closed');
});

The running results are as follows

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