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    WebSockets

    WebSockets is een geavanceerde techniek die het mogelijk maakt om een interactieve verbinding te openen tussen de browser van een gebruiker en een server. Met deze API kunnen berichten naar een server worden verzonden en event-gebaseerde antwoorden worden ontvangen, zonder de server te moeten pollen voor een antwoord.

    Documentatie

    WebSocket clientapplicaties schrijven
    Een tutorial om WebSocket clients te schrijven voor in de browser.
    WebSockets documentatie
    Documentatie voor de clientside WebSocket-API.
    (TBD) WebSocket servers schrijven
    Een artikel over het schrijven van server-side code om het WebSocket protocol te gebruiken.

    Alles bekijken...

    Tools

    Zie ook

    Browsercompatibiliteit

    Feature 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
    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 16 (Chrome) 11.0 (11.0) ? 12.10 6.0

    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.

    Warning: Among other things, a key reason WebSockets was disabled by default in Firefox 4 and 5 is the discovery of a security issue in the protocol's design. This was fixed in Firefox 6 by implementing a newer version of the protocol that corrects the problem.

    Documentlabels en -medewerkers

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