[OpenSER-Users] Wrong R-uri in ACK

Klaus Darilion klaus.mailinglists at pernau.at
Tue Mar 25 11:09:40 CET 2008


Looks like the Hipath is totally buggy.

As a workaround you could try:
- make a on_reply route
- if reply == 200 OK, copy the content of the Contact header into a 
Record-Route header which will be added on top of the existing header 
(insert_hf(txt)).

This should allowsx openser to route the ind-dialog message correct. Now 
it depends if the callee accepts the request with the additional Route 
header, but most clients do not care about received Route headers thus 
it should work.

Of course you also should report this bug to Siemens.

regards
klaus

Lucio Maciel schrieb:
> Ok, here are some snips of the call
> 
> 
> Here is the initial invite that I receive from the client...
> 
> client -> openser
> <cut>
> INVITE sip:02188889999 at tesatelecom.com SIP/2.0
> From: username01 <sip:username01 at tesatelecom.com>;tag=a8ced7257fddfcc
> To: sip:02188889999 at tesatelecom.com
> Via: SIP/2.0/UDP 192.168.0.61:5060;rport;branch=z9hG4bK0631b8ccb
> Call-ID: 76b50f94a009c40
> CSeq: 2138284261 INVITE
> Max-Forwards: 70
> Content-Length: 281
> Route: <sip:ip_of_tesatelecom.com:5060;lr>
> Allow:INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO
> Content-Type: application/sdp
> Contact: sip:username01 at 192.168.0.61:5060
> Supported: replaces
> User-Agent: HiPath 3000 V7.0 M5T SIP-UA SAFE/v3.6.6.10
> sdp follows....
> </cut>
> 
> I forward this to my pstn gateway, and that is the 200 OK that I forward
> back to the client.
> 
> gw -> openser -> client
> <cut>
> SIP/2.0 200 OK
> Via: SIP/2.0/UDP
> 192.168.0.61:5060;received=xxx.xxx.xxx.xxx;rport=5060;branch=z9hG4bKd97a7e313
> Record-Route:
> <sip:ip_of_tesatelecom;lr=on;ftag=a8ced7257fddfcc;nat=yes;did=fdf.0c5df845>
> From: username01 <sip:username01 at tesatelecom.com>;tag=a8ced7257fddfcc
> To: <sip:02188889999 at tesatelecom.com>;tag=5514406-tdb1077288600
> Call-ID: 76b50f94a009c40
> CSeq: 2138284262 INVITE
> Server: PSTN Gateway 
> Contact: <sip:552188889999 at ip_of_gateway:5060;transport=udp>
> Content-Type: application/sdp
> Content-Length:   179
> sdp follows...
> </cut>
> 
> And now the ACK for the 200ok
> client-> openser
> <cut>
> ACK sip:02188889999 at tesatelecom.com SIP/2.0 <- back uri
> From: username01 <sip:username01 at tesatelecom.com>;tag=a8ced7257fddfcc
> To: <sip:02188889999 at tesatelecom.com>;tag=5514406-tdb1077288600
> Via: SIP/2.0/UDP 192.168.0.61:5060;rport;branch=z9hG4bK9ea89fe86
> Call-ID: 76b50f94a009c40
> CSeq: 2138284262 ACK
> Max-Forwards: 70
> Content-Length: 0
> Route:
> <sip:ip_of_tesatelecom;lr=on;ftag=a8ced7257fddfcc;nat=yes;did=fdf.0c5df845>
> User-Agent: HiPath 3000 V7.0 M5T SIP-UA SAFE/v3.6.6.10
> </cut>
> 
> The r-uri in the ack is wrong, it should be the contact from the 200ok,
> and i can't route it to the rigth gateway.
> 
> So, there is some way that i can workaround this in openser?? Since is
> very unlikely that the client will fix this issue.
> 
> Thanks
> 
> 
> On Tue, 2008-03-25 at 00:54 +0800, Bai Shi wrote:
>> Could you provide more information? Who is issuing ACK and which is not changed? After t_relay by Openser?
>> Rgds,
>> BS
>>
>> -----Original Message-----
>> From: users-bounces at lists.openser.org [mailto:users-bounces at lists.openser.org] On Behalf Of Lucio Maciel
>> Sent: 2008年3月24日 23:13
>> To: users at lists.openser.org
>> Subject: [OpenSER-Users] Wrong R-uri in ACK
>>
>> Hi...
>>
>> I'm getting some wrongs ruri's in the ACK for a final 200ok from an
>> INVITE...
>>
>> It is comming as the original INVITE r-uri (number at host) and not the
>> contact from the 200ok.
>>
>> There is something i can do to workaround this in openser?
>>
>> Thanks.
>>
>>
> 
> 
> 
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