nodejs socket

server.js

var net = require('net');
var clientList = [];

var HOST = '127.0.0.1';
var PORT = 6969;

var server = net.createServer();

server.on('connection', function(client) {
    console.log('CONNECTED: ' + client.remoteAddress +':'+ client.remotePort);
    client.name = client.remoteAddress + ':' + client.remotePort;
    console.log(client);
    client.write('Hi ' + client.name + '!\n');
    clientList.push(client);
    client.on('data', function(data) {
        broadcast(data, client);
    });
    client.on('close', function() {
        clientList.splice(clientList.indexOf(client), 1);
    });

    client.on('error', function(e) {
        console.log(e.errno);
    });

});    

function broadcast(message, client) {
    var cleanup = [];
    for(var i=0;i<clientList.length;i+=1) {
        if(client !== clientList[i]) {
            if(clientList[i].writable){
                clientList[i].write(client.name + " says " + message);
            }else{
                cleanup.push(clientList[i]);
                clientList[i].destroy();
                console.log(cleanup);
            }
        }
    }
    for(i=0;i<cleanup.length;i+=1) {
        clientList.splice(clientList.indexOf(cleanup[i]), 1)
    }
}  

server.listen(PORT, HOST);
console.log('Server listening on ' + HOST + ':' + PORT);

client.js

var net = require('net');

var HOST = '127.0.0.1';
var PORT = 6969;

var client = new net.Socket();
client.connect(PORT, HOST, function() {

    console.log('CONNECTED TO: ' + HOST + ':' + PORT);
    // 建立连接后立即向服务器发送数据，服务器将收到这些数据
    client.write('I am Chuck Norris!');

});

// 为客户端添加“data”事件处理函数
// data是服务器发回的数据
client.on('data', function(data) {

    console.log('DATA: ' + data);
    // 完全关闭连接
    //client.destroy();

});

// 为客户端添加“close”事件处理函数
client.on('close', function() {
    console.log('Connection closed');
});