nodejs中使用websockets
2021-01-24 14:15
标签:服务器 love create web tcp min 活跃 only debug websockets这个新协议为客户端提供了一个更快、更有效的通信线路。像HTTP一样,websockets运行在TCP连接之上,但是它们更快,因为我们不必每次都打开一个新的连接来发送消息,因为只要服务器或客户端想要,连接就会一直保持活跃。 https://gist.github.com/tedmiston/5935757 nodejs中使用websockets 标签:服务器 love create web tcp min 活跃 only debug 原文地址:https://www.cnblogs.com/itech/p/13253420.htmlwebsockets介绍
更好的是,由于连接永远不会中断,我们终于可以使用全双工通信,这意味着我们可以将数据推送到客户机,而不必等待它们从服务器请求数据。这允许数据来回通信,这对于实时聊天应用程序,甚至是游戏都是非常理想的。实例
var net = require(‘net‘);
var server = net.createServer(function(socket) {
socket.write(‘Echo server\r\n‘);
socket.pipe(socket);
});
server.listen(1337, ‘127.0.0.1‘);
/*
And connect with a tcp client from the command line using netcat, the *nix
utility for reading and writing across tcp/udp network connections. I‘ve only
used it for debugging myself.
$ netcat 127.0.0.1 1337
You should see:
> Echo server
*/
/* Or use this example tcp client written in node.js. (Originated with
example code from
http://www.hacksparrow.com/tcp-socket-programming-in-node-js.html.) */
var net = require(‘net‘);
var client = new net.Socket();
client.connect(1337, ‘127.0.0.1‘, function() {
console.log(‘Connected‘);
client.write(‘Hello, server! Love, Client.‘);
});
client.on(‘data‘, function(data) {
console.log(‘Received: ‘ + data);
client.destroy(); // kill client after server‘s response
});
client.on(‘close‘, function() {
console.log(‘Connection closed‘);
});