17 Jan
2012
17 Jan
'12
1:50 p.m.
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(a)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(a)gmail.com>om>:
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
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