Socket.IO 1.3.0 发布，此版本改进内容如下：
服务器 Socket.IO 1.3.0 包括大量的 bug 修复，稳定性和性能提升，可以使用自定义 SSl 和重连接补偿参数配置客户端。
Fix tests on Node v0.11 (dba462) [rauchg] Fixed socket.io test runs on windows (19c442) [rauchg] null and undefined origins trigger the origins callback properly with origin value * (GH#1936) [drewblaisdell]
Updated debug version to 2.1.0 (GH#1926) [coderaiser] Fixed typo in socket.io README (GH#1922) [smart--petea] Fixed a typo in an error message (GH#1943) [eychu] Added test for reconnection after server restarts (GH#1939) [rase-] Updated year range in licence (GH#1938) [fay-jai] Added tests to better ensure that volatile emits work as intended (GH#1903) [rase-] Fixed socket.leave when leaving an unknown room (ca82c0) [defunctzombie] Added tests for SSL certificate options in Node clients (GH#290) [rase-] Fixed broken engine.io build due to invalid deps (GH#296) [rase-] Correctly abort the ongoing data request when closing transport (GH#297) [lpinca]
客户端 Use faster, new Travis build env(GH#785) [joshk] Reconnection fixes and improvements (GH#788) [mokesmokes] Fix travis env for running browser tests on PRs [rauchg] Fix url parsing when uri string is undefined (GH#797) [defunctzombie] The socket object now has an id property pointing to the underlying engine.io socket.id (GH#799) [rase-] Only call xhr.abort() on error cases when polling (GH#319) [samcday] Added SSL options or Node clients (GH#356) [rase-] Fixed browser tests on travis for engine.io-client [rauchg] Fix default port detection when host is specified (GH#366) [defunctzombie] Fix test runs on some IE browsers that fire too many open connections (GH#368) [rase-]
解析器
Greatly improved engine.io-parser documentation [grant] Encoding payloads to binary only if the buffer contains binary (GH#37) [rase-] Fixed parse error caused by the server encoding to strings if binary supported (GH#41) [rase-] Use travis matrix for better browser test runs (GH#38) [rase-] Allow sending binary in from old browsers as base64 (GH#36) [cvlchinet]
socket.io-redis socket.io-adapter 可以从 CDN grab 客户端：
1 | <script src="https://cdn.socket.io/socket.io-1.3.2.js"></script>
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Socket.IO 实现了实时双向的基于事件的通讯机制。旨在让各种浏览器与移动设备上实现实时app功能，模糊化各种传输机制。 Socket.IO 是跨平台，多种连接方式自动切换，做即时通讯方面的开发很方便，而且能和expressjs提供的传统请求方式很好的结合，即可以 在同一个域名，同一个端口提供两种连接方式：request/response, websocket(flashsocket,ajax…). 
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