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