[Users] Corrupted 'To' after uac_restore_from

Thu Feb 8 15:16:33 CET 2007

Bogdan 
I'm sorry - I commited the cardinal cut/paste sin (copying stuff incorrectly :-( ) 
Anyhow, I've *correctly* cut/paste the INVITE and BYE headers below, and it looks to me like the route headers *are* being rewritten correctly. 
So, it doesn't look like that was the issue - unless you are referring to something else? 

cheers 

--- Original Message ----- 
From: Bogdan-Andrei Iancu <bogdan at voice-system.ro> 
To: mahesh at aptela.com 
Cc: users at openser.org 
Sent: Thursday, February 8, 2007 3:29:26 AM GMT-0600 
Subject: Re: [Users] Corrupted 'To' after uac_restore_from 

Hi Mahesh, 

I suspect you have a client that does not preserve the 
Route/Record-Route parameters. According to RFC326, the parameters must 
not be altered at al, but I saw UAC doing lowercase on the param's 
value. Most probably this is your case also - the uac module use B64 
encoding of the old uri in RR param, so this is case sensitive. 

Get the full trace of the call and check the original RR param (inserted 
by openser in INVITE) against the one in put in the BYE. 

regards, 
bogdan 

---- CORRECTED MESSAGE----- 

I'm seeing this *very* weird error where uac_restore_from is ending up with a corrupted 'From' header. 
The weird thing is that it happens with only one end point (a Televantage SIP Trunk). 
With virtually *everything* else - and I am talking about tens of thousands of end points, spanning all sorts of sip devices, we are having *no* problems. 
The call is set up as follows -> the endpoint sends the INVITE, which is forwarded to a PSTN gateway 
The ACKs and the 200 OK all have their From/To headers appropriately rewritten 
The problem arises when the PSTN gateway initiates the BYE As you can see below, the 'To' header gets corrupted 

The *only* thing I can think of is that it has something to do with the structure of the Televantage tags (the '+' signs?). 

Any ideas? 

FYI, Openser 1.1.0 (latest CVS checkout), and 
modparam("uac","from_restore_mode","auto") 
modparam("uac","rr_store_param","aptelavsf") 

--INVITE-- UAC->proxy 
INVITE sip:17038677006 at 69.25.47.136 SIP/2.0. 
Via: SIP/2.0/UDP 10.10.35.100;rport;branch=z9hG4bK+ec6a2a20436621337016546fa4dc9e87+10.10.35.100+1. 
Allow-Events: message-summary. 
Allow-Events: presence. 
Allow-Events: refer. 
Max-Forwards: 70. 
Call-ID: 56796C1E at 10.10.35.100. 
From: "Member service"<sip:user100.crunchhq at 69.25.47.136>;tag=10.10.35.100+1+8c020003+dd5437f3. 
To: <sip:17038677006 at 69.25.47.136>. 
CSeq: 132610708 INVITE. 
Expires: 180. 
Supported: replaces. 
Supported: 100rel. 
Contact: <sip:6462174165 at 10.10.35.100>. 
Content-Type: application/sdp. 
Content-Length: 242. 
. 
User-Agent: TeleVantage-UA/7.50.4817. 
. 
v=0. 
o=TeleVantage 10671 0 IN IP4 10.10.35.100. 
s=phone-call. 
c=IN IP4 10.10.35.100. 
t=0 0. 
m=audio 6036 RTP/AVP 0 18 101. 
a=rtpmap:0 pcmu/8000/1. 
a=rtpmap:18 g729/8000/1. 
a=fmtp:18 annexb=no. 
a=rtpmap:101 telephone-event/8000/1. 
a=ptime:20. 

---INVITE--- proxy->gateway 
INVITE sip:17038677006 at 65.91.91.16:5060;transport=udp SIP/2.0. 
Record-Route: <sip:69.25.47.136;lr;ftag=10.10.35.100+1+8c020003+dd5437f3;nat=yes;aptelavsf=dGVzdDciIDR0YndrISJGfHtsaWBbPWQ7NiQ4LCJlISgv>. 
Via: SIP/2.0/UDP 69.25.47.136;branch=z9hG4bKf67d.2d31dbb.0. 
Via: SIP/2.0/UDP 10.10.35.100;rport=5060;branch=z9hG4bK+ec6a2a20436621337016546fa4dc9e87+10.10.35.100+1. 
Allow-Events: message-summary. 
Allow-Events: presence. 
Allow-Events: refer. 
Max-Forwards: 69. 
Remote-Party-ID: "Membersevice Queue" <sip:6462174165 at flareon.aptela.com>;party=calling;id-type=subscriber;screen=yes;privacy=off. 
Supported: replaces. 
Call-ID: 56796C1E at 10.10.35.100. 
From: "Membersevice Queue"<sip:6462174165 at flareon.aptela.com>;tag=10.10.35.100+1+8c020003+dd5437f3. 
To: <sip:17038677006 at 69.25.47.136>. 
CSeq: 132610708 INVITE. 
Expires: 180. 
Contact: <sip:6462174165 at 10.10.35.100:5060>. 
Content-Type: application/sdp. 
Content-Length: 262. 
User-Agent: TeleVantage-UA/7.50.4817. 
. 
v=0. 
o=TeleVantage 10671 0 IN IP4 10.10.35.100. 
s=phone-call. 
c=IN IP4 66.150.122.23. 
t=0 0. 
m=audio 59520 RTP/AVP 0 18 101. 
a=rtpmap:0 pcmu/8000/1. 
a=rtpmap:18 g729/8000/1. 
a=fmtp:18 annexb=no. 
a=rtpmap:101 telephone-event/8000/1. 
a=ptime:20. 
a=nortpproxy:yes . 

---BYE---gateway->proxy 
BYE sip:6462174165 at 10.10.35.100:5060 SIP/2.0. 
Via: SIP/2.0/UDP 66.52.236.25:5060;branch=z9hG4bKd8orpb20eg2hais2c2g1sd0000g00.1. 
To: "Membersevice Queue"<sip:6462174165 at 69.25.47.136>;tag=10.10.35.100+1+8c020003+dd5437f3. 
From: <sip:17038677006 at 66.52.236.25>;tag=1386496. 
Call-ID: 56796C1E at 10.10.35.100. 
CSeq: 1 BYE. 
Content-Length: 0. 
Route: <sip:69.25.47.136;lr;ftag=10.10.35.100+1+8c020003+dd5437f3;nat=yes;aptelavsf=dGVzdDciIDR0YndrISJGfHtsaWBbPWQ7NiQ4LCJlISgv>. 
Max-Forwards: 70. 

---BYE--- proxy->UAC 
BYE sip:6462174165 at 10.10.35.100:5060 SIP/2.0. 
Record-Route: <sip:69.25.47.136;lr;ftag=1386496>. 
Via: SIP/2.0/UDP 69.25.47.136;branch=z9hG4bK7791.48e0e2f5.0. 
Via: SIP/2.0/UDP 66.52.236.25:5060;branch=z9hG4bKd8orpb20eg2hais2c2g1sd0000g00.1. 
To: "Membersevice Queue"<sip:user100.cru>6'(!.l asr}XV.R\[>;tag=10.10.35.100+1+8c020003+dd5437f3. 
From: <sip:17038677006 at 66.52.236.25>;tag=1386496. 
Call-ID: 56796C1E at 10.10.35.100. 
CSeq: 1 BYE. 
Content-Length: 0. 
Max-Forwards: 69. 

-- 
******************************************* 
Mahesh Paolini-Subramanya (703) 386-1500 x9100 
CTO mahesh at aptela.com 
Aptela, Inc. http://www.aptela.com 
"Aptela: How Business Answers The Call" 
******************************************* 
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