[SR-Users] New feature: embedded MSRP relay

[Stoyan Mihaylov]

We use kamailio 3.2 and imsdroid to make videocalls, send messages etc.
What we have to this moment is kamailio 3.2, rtpproxy, asterisk and
modified imsdroid (for Android phones). Asterisk is used for billing and
some other services.
Imsdroid can send 2 kind of messages. One of them is called SMS and they
can go directly using kamailio and rtpproxy. I can get logs and provide
here as much as possible about this type of messages. For other messages
may be exactly something like MSRP is must. Doesn't matter what and how we
do, best what we receive now is "attempt" to send message. Receiver receive
notification and nothing more - neither user, nor content.
We have lot of experience with Asterisk, but only few months with Kamailio
and almost no experience with messages. May be we do something else wrong,
but what I can do is using wireshark to post here some results.
By the way - there are variants of imsdroid (with other names) for iPhone,
and Windows - but with windows version we got bad results. Android version
works very well.

On Tue, Jan 17, 2012 at 6:00 PM, Carsten Bock <carsten at ng-voice.com> wrote:

> Thumbs up, definitely cool new feature!
> I hope to see you at FOSDEM, not sure if i can make it....
>
> Thanks!
> Carsten
>
> 2012/1/17 Daniel-Constantin Mierla <miconda at gmail.com>:
> > Hello,
> >
> > a new module is now on development branch, named msrp, offering an
> embedded
> > MSRP relay. Message Session Relay Protocol is specified by IETF ( core
> and
> > relay part in RFC4975 and RFC4976), one of typical use cases is Instant
> > Messaging sessions negotiated via INVITE-200ok-ACK, a different approach
> > than SIP MESSAGE request.
> >
> > There is no external dependency, the transport layer from core is reused
> to
> > manage TCP/TLS connections used for MSRP. A MSRP relay is pretty much an
> > independent node, thus you can run Kamailio just to deal with MSRP
> traffic.
> > But there is no problem to run Kamailio to handle SIP and MSRP traffic in
> > the same instance, same or different sockets (it is working even when
> > SIP/MSRP are sent over the same connection or different connections to
> same
> > port).
> >
> > I couldn't find a reliable and trustable open source SIP phone to test
> with
> > it so far (hints are welcome), the module was tested with network tools
> and
> > chaining Kamailio instances. Help with testing and feedback is very
> > appreciated -- I can provide guidelines to adjust the config file to fit
> > tester's needs, just contact me off list or via IRC channel.
> >
> > For the moment, the relation (user,session) management is done in the
> > config, using htable module for example (see the README), it may be added
> > inside the module for the future to make it easier overall, although is
> less
> > than 10 lines of config -- this is mainly for extra security reasons, to
> > check if the session id matches the connection that was opened when the
> > session was created, otherwise the user authentication functionality is
> done
> > reusing existing functions from auth module. Another benefit is
> > performances, storing local socket and connection IP/port saves some
> time to
> > lookup the connection.
> >
> > Building MSRP relay on top of SIP server was done first for the benefit
> of
> > reusing the transport layer from the core for IPv4/IPv6 and TCP/TLS,
> which
> > is mature, scalable and offers asynchronous communication. Besides that,
> you
> > have most of the config tools to route SIP requests available for routing
> > MSRP (authentication, authorization, IP checking, accounting, a.s.o.).
> >
> > I made a news post with more details:
> >
> >   * http://www.kamailio.org/w/2012/01/new-module-embedded-msrp-relay/
> >
> > The readme of the new module is available at:
> >
> >   * http://kamailio.org/docs/modules/devel/modules/msrp.html
> >
> > Cheers,
> > Daniel
> >
> > --
> > Daniel-Constantin Mierla -- http://www.asipto.com
> > http://linkedin.com/in/miconda -- http://twitter.com/miconda
> >
> >
> > _______________________________________________
> > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> > sr-users at lists.sip-router.org
> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
> >
>
>
>
> --
> Carsten Bock
> CEO (Geschäftsführer)
>
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>
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