Node.js Net module

Node.js Net module

Node.js tool module

Node.js Net module provides a number of gadgets for the underlying network communication, including the creation of client / server approach, we can be introduced into the module in the following ways:

var net = require("net")

method

net.Server

net.Server often used to create a TCP or a local server.

event

net.Socket

net.Socket object is a TCP or UNIX Socket abstraction. net.Socket examples of the realization of a duplex stream interface. They can be created in the user client (using the connect ()) use, or when they are created by the Node, and delivered to the user through the connection server events.

event

net.Socket events:

Attributes

net.Socket provides many useful properties, easy to control socket interaction:

method

Examples

Create server.js file, the code is as follows:

var net = require('net');
var server = net.createServer(function(connection) { 
   console.log('client connected');
   connection.on('end', function() {
      console.log('客户端关闭连接');
   });
   connection.write('Hello World!\r\n');
   connection.pipe(connection);
});
server.listen(8080, function() { 
  console.log('server is listening');
});

Implementation of the above server-side code:

$ node server.js
server is listening   # 服务已创建并监听 8080 端口

Open a new window, create client.js file, the code is as follows:

var net = require('net');
var client = net.connect({port: 8080}, function() {
   console.log('连接到服务器！');  
});
client.on('data', function(data) {
   console.log(data.toString());
   client.end();
});
client.on('end', function() { 
   console.log('断开与服务器的连接');
});

Implementation of the above client code:

连接到服务器！
Hello World!

断开与服务器的连接

Gif examples demonstrate

Node.js tool module