nodejs学习笔记之网络编程

var net = require(‘net‘);
 
var server = net.createServer(function(socket) {
    //新的连接
    socket.on(‘data‘, function(data) {
        console.log(‘服务端接收到客户端的消息：‘ + data.toString());
        socket.write(‘服务端回应：你好‘);
    });
    socket.on(‘end‘, function() {
        console.log(‘服务端断开连接‘);
    });
});
 
server.listen(8124, function() {
    console.log(‘TCP服务创建‘);
});

var net = require(‘net‘);
 
var client = net.connect({port:8124}, function() {
    console.log(‘客户端连接成功‘);
    client.write(‘客户端发起问候：你好‘);
});
 
client.on(‘data‘, function(data) {
    console.log(‘客户端接收服务端消息：‘ + data.toString());
    client.end();
});
 
client.on(‘end‘, function() {
    console.log(‘客户端断开连接‘);
});

var dgram = require(‘dgram‘);
 
var server = dgram.createSocket(‘udp4‘);
 
server.on(‘message‘, function(msg, rinfo) {
    console.log(‘服务端获取信息：‘+msg+‘来自：‘+rinfo.address+‘:‘+rinfo.port);
});
 
server.on(‘listening‘, function() {
    var address = server.address();
    console.log(‘服务端正在监听：‘+address.address+‘:‘+address.port);
});
 
server.bind(41234);

var dgram = require(‘dgram‘);
 
var client = dgram.createSocket(‘udp4‘);
 
var message = new Buffer(‘我是客户端的消息‘);
client.send(message, 0, message.length, 41234, ‘10.16.15.155‘, function(err, bytes) {
    console.log(‘客户端发送完成，关闭客户端‘);
    client.close();
});

创建服务端：
var http = require(‘http‘);
 
http.createServer(function(req, res) {
    res.writeHead(200, {‘Content-type‘: ‘text/plain‘});
    res.end(‘Hello world!\n‘);
}).listen(8000);
 
console.log(‘服务器已开启‘);

var http = require(‘http‘);
 
var options = {
    hostname: ‘10.16.15.155‘,
    port: 8000,
    method: ‘GET‘,
    path: ‘/‘
};
 
var req = http.request(options, function(res) {
    console.log(‘Status：‘+res.statusCode);
    console.log(‘Headers：‘+JSON.stringify(res.headers));
    res.setEncoding(‘utf-8‘);
    res.on(‘data‘, function(chunk) {
        console.log(chunk);
    });
});
 
req.end();