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
Fixed room memory leak by bumping socket.io-adapter version (GH#42) [barisusakli]
Fixed broken link in README (GH#35) [hannesvdvreken]
socket.io-adapter
Fix confusing comment in add (GH#21) [marcooliveira]
Call the callback on delAll (GH#20) [marcooliveira]
可以从 CDN grab 客户端：
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…).
软件详情：http://socket.io/blog/socket-io-1-3-0/#
下载地址：https://github.com/Automattic/socket.io
来自:开源中国社区
