Salut (link-local) protocol changing - don't expect interop between versions

[Giannis Galanis]

Since you are updating the presence service, it is a could opportunity to
fix the switch from salut to gabble.

When internet connectivity is detected, salut should stop, and gabble should
start right after.  However, this doesnt work properly even on latest
builds, especially when the XO connects through schoolserver.
It has even been documented(bug 4193) that an XO was connected to medialab
AP and was still running Salut. The neighbor view included several XOs and
could share properly.

It is pretty high priority to make this work properly.

Also, when connected to a school server, it is faster to communicate with
others in the mesh through salut, then through jabber. So it can be useful
for the user to force salut even when jabber is available.

yani



On 10/18/07, Simon McVittie <simon.mcvittie at collabora.co.uk> wrote:
>
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> Just a heads-up for anyone who isn't already aware:
>
> We're replacing the Salut (link-local collaborative backend) "rMulticast"
> protocol with a better version, over the next week or so (bug #4044). This
> is
> an incompatible change; there may in fact be more than one incompatible
> change
> involved, if we have to change the protocol further when it's had
> larger-scale testing.
>
> As a result, until further notice, Salut is not expected to be compatible
> between different versions. Please do not report bugs in link-local
> (serverless) collaboration unless all participants in the activity are
> running exactly the same snapshot of Salut (e.g. the same XO image).
>
> We'll freeze the network protocol again between now and the 1.0 freeze.
> The
> improved rMulticast protocol either fixes, or will enable us to fix,
> #3294,
> #3969, #3465, #3338 and possibly #4127; we might also take the
> opportunity to improve the mDNS part of the protocol.
>
> Checking the version on an OLPC: rpm -q telepathy-salut
>
> Checking the version in jhbuild: ls -d source/telepathy-salut-*, see which
> one has the latest date in the directory name
>
> Regards,
>         Simon
>         on behalf of the OLPC Telepathy team
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