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"xmlns:xmpp" & "xmpp:xmlns" What is the Difference ?

Answer 1

+2 A:

Only:

xmlns:xmpp='urn:xmpp:xbosh'

declares a namespace. The prefix xmlns:... has a predefined meaning in XML With Namespaces, to bind use of the xmpp:... prefix in the document.

This:

xmpp:xmlns='urn:xmpp:xbosh'

is not a namespace declaration, it's an attribute named xmlns with the prefix xmpp. The xmpp prefix is not bound to any namespace in this document because there is no xmlns:xmpp declaration and it is not a predefined prefix.

An XML With Namespaces parser will complain when it gets xmpp:... attributes and there is no namespace declaration for xmpp. This error will be why the web service is giving you no response.

bobince 2010-07-31 13:26:23

Thanks, you are correct. Indeed I stumbled the source where message is generated it happen to be a JSJAC library that came with an examples from OXJS, http://github.com/junction/OXJS/blob/master/examples/demo-jsjac/jsjac.js (line 430). I am amazed how one could write that =(. Anyway you helped a lot with assuring me that the second option is indeed a flaw

simple 2010-07-31 13:32:55

Erk! Yeah, that's pretty bad. This appears to be fixed upstream in jsjac, see http://github.com/sstrigler/JSJaC/commit/1c4f0b7e3fe7da6276f80227988cf98666278d57

bobince 2010-07-31 13:48:02

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"xmlns:xmpp" & "xmpp:xmlns" What is the Difference ?

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