[Telepathy] [Bug 15562] New: Using handle to represent temporary contacts valid during session

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=15562

           Summary: Using handle to represent temporary contacts valid
                    during session
           Product: Telepathy
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: telepathy-spec
        AssignedTo: telepathy at lists.freedesktop.org
        ReportedBy: ppessi+telepathy at gmail.com


SIP has concept of forking, where a request for a public ID such as
<sip:pekka.pessi at example.com> can be routed to several user-agents. A SIP
session can be formed with any of those user-agents, and there might be
multiple sessions active with the same public user ID but different user-agent.

The SIP user-agent identifies itself with a contact URI. The contact URI can be
public ID, too, known as globally routable user-agent uri (gruu), or it can be
private and reachable only through the original session.

The current Contact Handle semantics do not suit handling user-agent contacts.
It is a bit like channel-specific handle, meaning that it has Owner (the public
identity for human consumption), but it is usable outside the channel, for
instance, when sending text MESSAGEs to the particular SIP user-agent with
which you have a StreamedMedia channel.


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