Hi there,

It seems that the Microsoft Messenger response to a loose routing
Record-Route with a 400 Bad Request. Did anybody else have such an
experience?

Christian

If I send a packet like this:

INVITE sip:[EMAIL PROTECTED]:8202 SIP/2.0
Via: SIP/2.0/UDP 192.168.0.22:5060;branch=z9hG4bK-rmqka3h9jwf6.0
Record-Route: <sip:192.168.0.22:5060;lr>
Via: SIP/2.0/UDP 192.168.0.165:5060;branch=z9hG4bK-ca0302or28oi
Max-Forwards: 19
From: "Christian Stredicke" <sip:[EMAIL PROTECTED]>;tag=xpnczoew15
To: <sip:[EMAIL PROTECTED]:8202>
Call-ID: [EMAIL PROTECTED]
CSeq: 1 INVITE
Contact: <sip:[EMAIL PROTECTED]:5060;line=1>
User-Agent: snom Version 1.12a
Accept-Language: en
Accept: application/sdp
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, PRACK
Supported: timer, 100rel, replaces
Session-Expires: 7200
Content-Type: application/sdp
Content-Length: 276

v=0
o=root 180 180 IN IP4 192.168.0.165
s=Call from 192.168.0.165
c=IN IP4 192.168.0.165
t=0 0
m=audio 10078 RTP/AVP 0 3 8 18 101
a=rtpmap:0 pcmu/8000
a=rtpmap:8 pcma/8000
a=rtpmap:3 gsm/8000
a=rtpmap:18 g729/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15

MS Messenger responds with:

SIP/2.0 400 Bad Request
Via: SIP/2.0/UDP 192.168.0.22:5060;branch=z9hG4bK-rmqka3h9jwf6.0
Via: SIP/2.0/UDP 192.168.0.165:5060;branch=z9hG4bK-ca0302or28oi
From: "Christian Stredicke" <sip:[EMAIL PROTECTED]>;tag=xpnczoew15
To: <sip:[EMAIL PROTECTED]:8202>;tag=eea83383-ee20-4895-ac0e-eff247a12f48
Call-ID: [EMAIL PROTECTED]
CSeq: 1 INVITE
Record-Route: <sip:192.168.0.22:5060;lr>
User-Agent: Windows RTC/1.0
Content-Length: 0


--
Dr. Christian Stredicke
snom technology AG
sip:[EMAIL PROTECTED]
pots:+493039833401



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