[SR-Users] Sending MSRP message to kamailio/msrprelay causes 501 error

[Daniel-Constantin Mierla]

Hello,

kamailio has an embedded msrp relay functionality. You have to load and 
configure msrp module -- it is new in upcoming release (3.3.0, planned 
to be out about mid of June):

http://kamailio.org/docs/modules/devel/modules/msrp.html

Have you tried with it as well? I developed the current version, but had 
no good clients I could test with at that time, so I used mainly network 
sending tools to simulate msrp traffic.

Cheers,
Daniel


On 5/24/12 1:27 PM, Reichert Alexander wrote:
>
> Hi,
>
> We are developing a Java based SIP gateway implementation and are 
> performing some integration tests on a kamailio/msrprelay server 
> (plugin from www.msrprelay.org).
>
> The SIP signaling part works so far, but when sending a MSRP message, 
> the client receives a 501 "Unknown method" error. However, it seems 
> the request does not reach the MSRP module on the server as there is 
> no corresponding trace log on the server side.
>
> On Protocol level, everything looks fine so far, the sequence executed 
> is as follows:
>
> -->SIP REGISTER
>
> <-- SIP/2.0 401 Unauthorized
>
> -->SIP REGISTER
>
> <--SIP/2.0 200 OK
>
> -->INVITE
>
> <--SIP/2.0 407 Proxy Authentication Required
>
> -->ACK
>
> -->INVITE
>
> <--SIP/2.0 180 Ringing
>
> <--SIP/2.0 180 Ringing
>
> <--SIP/2.0 200 OK
>
> -->ACK
>
> The INVITE is processed with the following SDP packet in the request:
>
> v=0
>
> o=- 1337788359935 1337788359935 IN IP4 localhost
>
> s=MSRP Session
>
> c=IN IP4 localhost
>
> t=0 0
>
> m=message 2855 TCP/MSRP *
>
> a=path:msrp://localhost:2855/U3FuvW00m62UY0020H71;tcp
>
> a=accept-types:message/cpim text/* application/im-iscomposing+xml
>
> a=accept-wrapped-types:*
>
> a=setup:active
>
> And response:
>
> v=0
>
> o=- 3546777215 3546777216 IN IP4 46.105.78.68
>
> s=sipsimple 0.20.0
>
> c=IN IP4 46.105.78.68
>
> t=0 0
>
> m=message 57233 TCP/MSRP *
>
> a=path:msrp://msrphost:2855/5AUNTOt7XlFsK7VuT4SzETEzMzc3ODg0MTUuMDcyOjQ2LjEwNS43OC42OA==;tcp 
> msrp://msrphost:57233/6bf6dd73b9e4587b65b6;tcp
>
> a=accept-types:message/cpim text/* application/im-iscomposing+xml
>
> a=accept-wrapped-types:*
>
> a=setup:passive
>
> But when sending the MSRP message, 501 is returned:
>
> MSRP f0CHA1TD SEND
>
> To-Path: msrp://msrphost:57233/6bf6dd73b9e4587b65b6;tcp
>
> From-Path: msrp://localhost:52673/b10XadK9;tcp
>
> Message-ID: 13377883623135c260a3568cc
>
> Byte-Range: 1-*/14
>
> Hello Francois
>
> -------f0CHA1TD$
>
> MSRP f0CHA1TD 501 Unknown method: SEND
>
> To-Path: msrp://localhost:52673/b10XadK9;tcp
>
> From-Path: msrp://msrphost:57233/6bf6dd73b9e4587b65b6;tcp
>
> -------f0CHA1TD$
>
> When testing with two sip-simple client endpoints, MSRP messaging 
> works fine, but on protocol traces we cannot identify any differences 
> between sip-simple communication flows and the ones we are implementing.
>
> Does anyone have a hint on what is wrong in this message flow? Any 
> advice is appreciated.
>
> Thanks,
>
> Alex
>
>
>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda



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