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    WebSockets

    WebSocket 技术使得浏览器直接与服务器端的程序通过socket通讯成为可能。使用WebSocket链接,Web应用程序可以实时的推送或者获取信息。

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    编写 WebSocket 客户端程序 
    一步步教你编写一个能在浏览器运行的 WebSocket 客户端。
    WebSockets 参考
    客户端 WebSocket API 参考文档。
    编写 WebSocket 服务器 (未完)
    教你编写能够处理 WebSocket 协议的服务器程序。

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    参考

    浏览器兼容性

    功能 Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Version -76 support 6 4.0 (2.0) Not supported 11.00 (disabled) 5.0.1
    Protocol version 7 support Not supported 6.0 (6.0)
    Moz
    Not supported Not supported Not supported
    Protocol version 10 support 14 7.0 (7.0)
    Moz
    HTML5 Labs ? ?
    Standard - RFC 6455 Support 16 11.0 (11.0) 10 12.10 6.0
    Usable in Workers (Yes) 36.0 (36.0) ? ? ?
    Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Version -76 support ? ? ? ? ?
    Protocol version 7 support ? ? ? ? ?
    Protocol version 8 support (IETF draft 10) ? 7.0 (7.0) ? ? ?
    Standard - RFC 6455 Support 4.4 11.0 (11.0) ? 12.10 6.0
    Usable in Workers (Yes) 36.0 (36.0) ? ? ?

    Gecko notes

    WebSockets support in Firefox is continuing to track the evolving WebSocket specification. Firefox 6 implements version 7 of the underlying protocol, while Firefox 7 implements version 8 (as specified by IETF draft 10). Firefox mobile received WebSocket support in Firefox mobile 7.0.

    Gecko 6.0

    Prior to Gecko 6.0 (Firefox 6.0 / Thunderbird 6.0 / SeaMonkey 2.3), there was, incorrectly, a WebSocket object that some sites were thinking implied that WebSocket services were not prefixed; this object has been renamed to MozWebSocket.

    Gecko 7.0

    Starting in Gecko 7.0 (Firefox 7.0 / Thunderbird 7.0 / SeaMonkey 2.4), the network.websocket.max-connections preference is used to determine the maximum number of WebSocket connections that can be open at a time. The default value is 200.

    Gecko 8.0

    Starting in Gecko 8.0 (Firefox 8.0 / Thunderbird 8.0 / SeaMonkey 2.5), the deflate-stream extension to the WebSocket protocol has been disabled, since it's been deprecated from the specification drafts. This resolves incompatibilities with some sites.

    Gecko 11.0

    Prior to Gecko 11.0, both incoming and outgoing messages were limited to 16 MB in size. They may now be up to 2 GB in size. Note, however, that memory limitations (especially on mobile devices) make that a theoretical maximum, not a practical one. In reality, transfers of that size will fail on devices that don't have enough memory.

    Additionally, ArrayBuffer send and receive support for binary data has been implemented.

    Starting in Gecko 11.0, the WebSocket API is no longer prefixed.

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