Name
id — Optional
Synopsis
<message id='JCOM_12'>When a message is sent, and a reply is expected, it is often useful to give the outbound message an identifier. When the recipient responds, the identifier is included in the response. In this way, the originator of the message can work out which reply corresponds to which original message.
At the Jabber server, this works because a reply is usually built from
a copy of the original message, with the
from and
to attributes switched around. So the
id attribute remains untouched and in
place.
Note
Each id value within a session, represented by one
streamed XML document, must be unique within that session, that is,
within that one document.
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