[OpenSER-Users] OpenSer not matching a correct reply to its transaction ???

[Iñaki Baz Castillo]

Hi, I'm experimenting a annoying problem since it seems that my OpenSer, 
sometimes, doesn't match correct replies from my gateway to client 
transactions initiated by OpenSer.
AFAIK all is correct but OpenSer doesn't match the "100 Trying", neither 
the "183" and ends the transactoion after "fr_timer" (and before it OpenSer 
sends INVITE retransmissions).

The following is n example of non mathed response. I can't understand why, the 
top branch matches and also the CSeq (as RFC 3261 17.1.3 indicates):



INVITE from OpenSer to gateway:

---------------------------
INVITE sip:0034687105267 at 66.44.0.144 SIP/2.0
Record-Route: <sip:88.99.3.10;lr=on;ftag=as5fc7617f>
Via: SIP/2.0/UDP 88.99.3.10;branch=z9hG4bK87ab.47b6f072.0
Via: SIP/2.0/UDP 
192.168.1.203:5060;received=88.99.1.192;branch=z9hG4bK20b50ef9;rport=10000
From: <sip:202 at sip.domain.net>;tag=as5fc7617f
To: <sip:XXXXXXXXX at sip.domain.net>
Contact: <sip:202 at 88.99.1.192:10000>
Call-ID: 70af31e43126fa0917146b5523ea4add at sip.domain.net
CSeq: 103 INVITE
User-Agent: domain - Asterisk PBX
Max-Forwards: 69
Date: Thu, 19 Jun 2008 10:45:03 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Content-Type: application/sdp
Content-Length: 284
X-Called-E164: +34XXXXXXXXX
P-Asserted-Identity: <sip:XXXXXXXXX at 88.99.3.10>

v=0
o=root 1468 1469 IN IP4 192.168.1.203
s=session
c=IN IP4 88.99.3.10
t=0 0
m=audio 60884 RTP/AVP 8 18 101
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv
-----------------------------------------------



"100 Trying" from gateway

-----------------------------------------------
SIP/2.0 100 Trying
From: <sip:202 at sip.domain.net>;tag=as5fc7617f
To: <sip:XXXXXXXXX at sip.domain.net>;tag=5ad3254683132008619125120
Call-ID: 70af31e43126fa0917146b5523ea4add at sip.domain.net
CSeq: 103 INVITE
Allow: ACK,BYE,CANCEL,INVITE,OPTIONS,INFO,SUBSCRIBE,REFER,NOTIFY,PRACK
Via: SIP/2.0/UDP 88.99.3.10;branch=z9hG4bK87ab.47b6f072.0
Via: SIP/2.0/UDP 
192.168.1.203:5060;received=88.99.1.192;rport=10000;branch=z9hG4bK20b50ef9
Contact: <sip:66.44.0.144:5060;transport=UDP>
Content-Length: 0
-----------------------------------------------


This just occurs some times (3% of outgoing calls, that's really enough).

I'm using OpenSer 1.3.2 complied in Debian Etch as deb package and of course 
use t_relay().

Any idea? IMHO this error doesn't make sense :(



-- 
Iñaki Baz Castillo
ibc at in.ilimit.es