Unified Communication

Niklas Andersson niklas.andersson at openforce.se
Tue Jan 28 06:19:44 EST 2014

Hi David,

 Hopefully I'll have the goods delivered later this year. We'll fix:

1. Encryption with SRTP (as a matter of fact I think that export
NSS_SSL_CBC_RANDOM_IV=0 is no longer necessary as of the Pidgin shipped in
Ubuntu 13.10)

2. Desktop screen sharing. We will use xfreerdp and FreeRDS respectively
for client/server with full compatibility with Lync.

 We'll most probably have to target Pidgin 3, because SRTP is implemented
in a newer version of Gstreamer and that newer version is only found in
Pidgin 3-trunk.

Best regards,

2014-01-28 David Woodhouse <dwmw2 at infradead.org>

> On Tue, 2014-01-28 at 08:56 +0100, Niklas Andersson wrote:
> >  What needs to get done to get Pidgin on that list? We are currently
> > starting up a project to do major improvements to SIPE (Lync-plugin
> > for Pidgin). We are touching pieces with respect to these
> > technologies, and I would like to hear your opinion. SIPE already
> > supports (unencrypted) SIP-calls (voice/video), so I believe it would
> > make sense to get this functionality into Pidgin as well.
> Pidgin already supports voice/video calls with SIPE, although that
> 'unencrypted' is a big problem in some cases. There was a patch posted
> recently to add a DTMF dialpad in calls, which makes it possible to use
> it for a lot of conference calls where previously it wasn't viable.
> The biggest thing you could do for SIPE at the moment is make it
> actually work :)
> Since NSS enabled the workaround for the BEAST attack, SIPE cannot
> connect to many Lync servers unless the user manually does
>             export NSS_SSL_CBC_RANDOM_IV=0
> We need to find some way to make this settable in NSS per-connection,
> and allow the SIPE code to actually ask pidgin's SSL client to do so.
> Or persuade Microsoft to fix their servers, or find some other "fix", of
> course.
> The other big thing my users need from SIPE would be the screen sharing.
> Not necessarily *sending* for now, but at least being able to *view* a
> shared desktop in a Lync meeting would eliminate our major reason for
> ditching pidgin and booting a Windows VM these days.
> --
> dwmw2
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