Overview

这是Node的WebSocket协议版本8和13的（大部分）纯JavaScript实现。在“ test / scripts”文件夹中，有一些示例客户端和服务器应用程序实现了各种互操作性测试协议。

对于用ActionScript 3编写的WebSocket客户端，请参阅我的AS3WebScocket项目。

Documentation

You can read the full API documentation in the docs folder.

兼容的浏览器

• Firefox 7-9 (Old) (Protocol Version 8)
• Firefox 10+ (Protocol Version 13)
• Chrome 14,15 (Old) (Protocol Version 8)
• Chrome 16+ (Protocol Version 13)
• Internet Explorer 10+ (Protocol Version 13)
• Safari 6+ (Protocol Version 13)

$ npm install websocket

声明变量:

var WebSocketServer = require('websocket').server;
var WebSocketClient = require('websocket').client;
var WebSocketFrame  = require('websocket').frame;
var WebSocketRouter = require('websocket').router;
var W3CWebSocket = require('websocket').w3cwebsocket;

Server Example

#!/usr/bin/env node
var WebSocketServer = require('websocket').server;
var http = require('http');
 
var server = http.createServer(function(request, response) {
    console.log((new Date()) + ' Received request for ' + request.url);
    response.writeHead(404);
    response.end();
});
server.listen(8080, function() {
    console.log((new Date()) + ' Server is listening on port 8080');
});
 
wsServer = new WebSocketServer({
    httpServer: server,
    // You should not use autoAcceptConnections for production
    // applications, as it defeats all standard cross-origin protection
    // facilities built into the protocol and the browser.  You should
    // *always* verify the connection's origin and decide whether or not
    // to accept it.
    autoAcceptConnections: false
});
 
function originIsAllowed(origin) {
  // put logic here to detect whether the specified origin is allowed.
  return true;
}
 
wsServer.on('request', function(request) {
    if (!originIsAllowed(request.origin)) {
      // Make sure we only accept requests from an allowed origin
      request.reject();
      console.log((new Date()) + ' Connection from origin ' + request.origin + ' rejected.');
      return;
    }
    
    var connection = request.accept('echo-protocol', request.origin);
    console.log((new Date()) + ' Connection accepted.');
    connection.on('message', function(message) {
        if (message.type === 'utf8') {
            console.log('Received Message: ' + message.utf8Data);
            connection.sendUTF(message.utf8Data);
        }
        else if (message.type === 'binary') {
            console.log('Received Binary Message of ' + message.binaryData.length + ' bytes');
            connection.sendBytes(message.binaryData);
        }
    });
    connection.on('close', function(reasonCode, description) {
        console.log((new Date()) + ' Peer ' + connection.remoteAddress + ' disconnected.');
    });
});

Client Example

#!/usr/bin/env node
var WebSocketClient = require('websocket').client;
 
var client = new WebSocketClient();
 
client.on('connectFailed', function(error) {
    console.log('Connect Error: ' + error.toString());
});
 
client.on('connect', function(connection) {
    console.log('WebSocket Client Connected');
    connection.on('error', function(error) {
        console.log("Connection Error: " + error.toString());
    });
    connection.on('close', function() {
        console.log('echo-protocol Connection Closed');
    });
    connection.on('message', function(message) {
        if (message.type === 'utf8') {
            console.log("Received: '" + message.utf8Data + "'");
        }
    });
    
    function sendNumber() {
        if (connection.connected) {
            var number = Math.round(Math.random() * 0xFFFFFF);
            connection.sendUTF(number.toString());
            setTimeout(sendNumber, 1000);
        }
    }
    sendNumber();
});
 
client.connect('ws://localhost:8080/', 'echo-protocol');

Client Example using the W3C WebSocket API

Same example as above but using the W3C WebSocket API.

var W3CWebSocket = require('websocket').w3cwebsocket;
 
var client = new W3CWebSocket('ws://localhost:8080/', 'echo-protocol');
 
client.onerror = function() {
    console.log('Connection Error');
};
 
client.onopen = function() {
    console.log('WebSocket Client Connected');
 
    function sendNumber() {
        if (client.readyState === client.OPEN) {
            var number = Math.round(Math.random() * 0xFFFFFF);
            client.send(number.toString());
            setTimeout(sendNumber, 1000);
        }
    }
    sendNumber();
};
 
client.onclose = function() {
    console.log('echo-protocol Client Closed');
};
 
client.onmessage = function(e) {
    if (typeof e.data === 'string') {
        console.log("Received: '" + e.data + "'");
    }
};