[Bug 32024] New: implement immortal handles

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=32024

           Summary: implement immortal handles
           Product: Telepathy
           Version: git master
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: tp-python
        AssignedTo: telepathy-bugs at lists.freedesktop.org
        ReportedBy: simon.mcvittie at collabora.co.uk
         QAContact: telepathy-bugs at lists.freedesktop.org


Since spec 0.21.6 handles are meant to last as long as the Connection does,
which basically means that HoldHandles, ReleaseHandles and anything else that
refs handles (Contacts, ContactList) should check that they're all valid, but
not do anything else special.

A new HasImmortalHandles property indicates whether the CM has been updated to
these semantics. In telepathy-glib we were able to set this to TRUE
unconditionally, because the library implements the handle refcounting.

It'd be ideal to do the same for telepathy-python. Failing that, please do all
you can in tp-py, then clone this bug to the Python CMs (Butterfly and
Sunshine) to implement the rest themselves.

See Bug #23155 for more discussion, and telepathy-glib commits prior to 0.13.8
for an implementation.

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