Unlike most commercial instant messaging protocols, XMPP is defined in an open standard in the application layer.
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16 Facts About XMPP
2.
The architecture of the XMPP network is similar to email; anyone can run their own XMPP server and there is no central master server.
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3.
Original and "native" transport protocol for XMPP is Transmission Control Protocol, using open-ended XML streams over long-lived TCP connections.
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4.
Since XML is text based, normal XMPP has a higher network overhead compared to purely binary solutions.
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5.
Unlike multi-protocol clients, XMPP provides this access at the server level by communicating via special gateway services running alongside an XMPP server.
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6.
XMPP is implemented by many clients, servers, and code libraries.
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7.
Several large public IM services natively use or used XMPP, including LiveJournal's "LJ Talk", Nimbuzz, and HipChat.
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8.
XMPP is used in deployments of non-IM services, including smart grid systems such as demand response applications, message-oriented middleware, and as a replacement for SMS to provide text messaging on many smartphone clients.
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9.
Some largest messaging providers use, or have been using, various forms of XMPP based protocols in their backend systems without necessarily exposing this fact to their end users.
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10.
XMPP is the de facto standard for private chat in gaming related platforms such as Origin, and PlayStation, as well as the now discontinued Xfire and Raptr.
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11.
Internet Engineering Task Force formed an XMPP working group in 2002 to formalize the core protocols as an IETF instant messaging and presence technology.
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12.
The early Jabber protocol, as developed in 1999 and 2000, formed the basis for XMPP as published in RFC 3920 and RFC 3921 in October 2004 .
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13.
The XMPP Working group produced specifications RFC 3922 and RFC 3923.
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14.
Several XMPP extensions are part of the experimental implementation: Efficient XML Interchange Format; Sensor Data; Provisioning; Control; Concentrators; Discovery.
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15.
IETF XMPP working group has produced a series of Request for Comments documents:.
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16.
XMPP has often been regarded as a competitor to SIMPLE, based on Session Initiation Protocol, as the standard protocol for instant messaging and presence notification.
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