[SIP Beyond VoIP] sending message to kamailio/msrprelay causes MSRP 501 error

[Adrian Georgescu]

OpenSIPS + MSRPRelay combination or http://sip2sip.info SIP service work just fine unless you can prove otherwise.

For why the MSRP implementation of Kamailio is not able to handle properly the MSRP methods you should ask its developers, the problem is on the server side not the client.

Adrian

On May 23, 2012, at 6:17 PM, Reichert Alexander wrote:

> Hi,
>  
> We are developing a Java based RCS gateway implementation and are performing some integration tests on a kamailio/msrprelay platform.
> The SIP signaling part works so far, but when sending a MSRP message, the server always responds with a 501 “Unknown method” error. On Protocol level, everything look 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 the sip-simple client, MSRP messaging works fine, but on protocol traces we cannot identify any differences.
> Does anyone have a hint on what is wrong in this message flow? Any advice is appreciated.
>  
> Thanks,
> Alex
>  
>  
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