Hi all, I need the help of experts in identifying which side is correct and which side has a bug: Microsoft Messenger 5.0 or Free World Dialup Server (0.8.11rc3)
The problem is the interpretation of the lr-param in the route set. This is the fact: When I connect with MS Messenger to [EMAIL PROTECTED] I get the following 200 OK response: SIP/2.0 200 OK Via: SIP/2.0/UDP 212.152.201.190:15448 Record-Route: <sip:[EMAIL PROTECTED];ftag=acd8235d6b18416093ab224b18257dc7;lr=on> From: "[EMAIL PROTECTED]" <sip:[EMAIL PROTECTED]>;tag=acd8235d6b18416093ab224b18257dc7;epid=5bbb18 e48e To: <sip:[EMAIL PROTECTED]>;tag=as75f23980 Call-ID: [EMAIL PROTECTED] CSeq: 2 INVITE User-Agent: Asterisk PBX Contact: <sip:[EMAIL PROTECTED]:5028> Content-Type: application/sdp Content-Length: 187 v=0 o=root 7610 7610 IN IP4 65.39.205.112 s=session c=IN IP4 65.39.205.112 t=0 0 m=audio 5438 RTP/AVP 3 101 a=rtpmap:3 GSM/8000 a=rtpmap:101 telephone-event/8000 a=fmtp:101 0-16 If you look at the Record-Route Header you can see "lr=on", which I assume should mean the lr-param. But this is obviously not recognized as the lr-param by MS messenger, because it does not place the remote target URI into the request URI of ACK. Instead it pushes the remote target URI into the Route header and uses the top URI from the route set as the request URI, because it supposes the next proxy is a strict router: ACK sip:[EMAIL PROTECTED];ftag=acd8235d6b18416093ab224b18257dc7;lr=on SIP/2.0 Via: SIP/2.0/UDP 212.152.201.190:15448 Max-Forwards: 70 From: "[EMAIL PROTECTED]" <sip:[EMAIL PROTECTED]>;tag=acd8235d6b18416093ab224b18257dc7;epid=5bbb18 e48e To: <sip:[EMAIL PROTECTED]>;tag=as75f23980 Call-ID: [EMAIL PROTECTED] CSeq: 2 ACK Route: <sip:[EMAIL PROTECTED]:5028> User-Agent: RTC/1.2 Content-Length: 0 I am not an expert in BNF, but the question is: Is "lr=on" a correct syntax for the lr-param? Any help is appreciated. Franz _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
