socket.io的抽象實現：engine.io

engine.io是一個socket.io的抽象實現，做爲socket.io的服務器和瀏覽器之間交換的數據的傳輸層。它不會取代Socket.IO，它只是抽象出固有的複雜性，支持多種瀏覽器，設備和網絡的實時數據交換。Server (A) Listening on a porthtml

 
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      var engine = require('engine.io') 
     
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        , server = engine.listen(80) 
     
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      server.on('connection', function (socket) { 
     
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        socket.send('utf 8 string'); 
     
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      });

(B) Intercepting requests for a http.Server瀏覽器

 
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      var engine = require('engine.io') 
     
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        , http = require('http').createServer().listen(3000) 
     
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        , server = engine.attach(http) 
     
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      server.on('connection', function (socket) { 
     
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        socket.on('message', function () { }); 
     
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        socket.on('close', function () { }); 
     
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      });

 
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      var engine = require('engine.io') 
     
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        , server = new engine.Server() 
     
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      server.on('connection', function (socket) { 
     
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        socket.send('hi'); 
     
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      }); 
     
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      // … 
     
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      httpServer.on('upgrade', function (req, socket, head) { 
     
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        server.handleUpgrade(req, socket, head); 
     
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      }); 
     
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      httpServer.on('request', function (req, res) { 
     
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        server.handleRequest(req, res); 
     
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      });

Client網絡

 
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      <script src="/path/to/engine.io.js"></script> 
     
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      <script> 
     
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        var socket = new eio.Socket('ws://localhost/'); 
     
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        socket.on('open', function () { 
     
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          socket.on('message', function (data) { }); 
     
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          socket.on('close', function () { }); 
     
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        }); 
     
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      </script>

項目主頁：http://www.open-open.com/lib/view/home/1384093598133socket