[Bug 43035] New: A method to avoid downloading the roster at every connection

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43035

             Bug #: 43035
           Summary: A method to avoid downloading the roster at every
                    connection
    Classification: Unclassified
           Product: Telepathy
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: tp-spec
        AssignedTo: telepathy-bugs at lists.freedesktop.org
        ReportedBy: alban.crequy at collabora.co.uk
         QAContact: telepathy-bugs at lists.freedesktop.org


On XMPP, the roster is not sent automatically by the server to the client: the
client has to explicitly request to download it. At the moment, gabble always
downloads it as soon as the connection to the server is established. It uses
bandwidth and it would be better not to download it too often. Possible
reasons:

- The UI does not show the roster, so we don't need to download it,
- The UI could cache the roster and could be ok with less regular updates,
- The UI has an out-of-band method to get the roster.

We can have a connection parameter specifying whether to download the roster on
startup, and a new method on the connection to explicitly request the download
when needed.

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