[Users] Comma-Separated Via Header

[Bogdan-Andrei Iancu]

Hi,

openser fully supports compact header format, so this is not the cause 
of the failure - if the reply is not really forwarded, check the 
openser's log for error; also enabling debug will might be helpful.

regards,
bogdan

Dioris Moreno wrote:

> I was making some fax tests using a Cisco AS5300, OpenSER 1.0.1 and a 
> Grandstream HandyTone 486. Everything results fine when I previously 
> make the same test directly from the HandyTone to the AS5300, however 
> when I put OpenSER in the middle the fax connection could not be 
> established. Checking captures at both ends, I noticed the HandyTone 
> was not receiving the OK response to its RE-INVITE request, but the 
> AS5300 was sending it. Looking a capture in the OpenSER, I suppose it 
> didn’t send the OK response from the AS5300 to the HandyTone because 
> the format of the Via Header used by the AS5300. Look at the captures 
> below, the AS5300 sends the Via header in a comma-separated format 
> instead using a line for each one. Is there a way to workaround this?
>
> I think my best option is to modify the OpenSER code to support both 
> formats. Is this something that somebody already does it? If the 
> answer it is not, where can I start?
>
> I’ll appreciate any help.
>
> Dioris Moreno
>
> Cisco AS5300 IP Address: AAA.BBB.CCC.DDD
>
> OpenSER IP Address: WWW.XXX.YYY.ZZZ
>
> Grandstream HT486 IP Address: FFF.GGG.HHH.III
>
> Calling Party Number (PSTN): UserA
>
> Called Party Number (VoIP): UserB
>
> Message From OpenSER to Cisco AS5300
>
> Session Initiation Protocol
>
> Request-Line: INVITE sip:UserA at AAA.BBB.CCC.DDD:5060 SIP/2.0
>
> Method: INVITE
>
> Resent Packet: False
>
> Message Header
>
> Record-Route: <sip:WWW.XXX.YYY.ZZZ;ftag=266f5f157860b9ca;lr=on>
>
> Via: SIP/2.0/UDP WWW.XXX.YYY.ZZZ;branch=z9hG4bK6a82.677fb8e1.0
>
> Via: SIP/2.0/UDP FFF.GGG.HHH.III:50841;branch=z9hG4bK90436408698e6881
>
> From: <sip:UserB at WWW.XXX.YYY.ZZZ>;tag=266f5f157860b9ca
>
> SIP from address: sip:UserB at WWW.XXX.YYY.ZZZ
>
> SIP tag: 266f5f157860b9ca
>
> To: <sip:UserA at AAA.BBB.CCC.DDD>;tag=D33F86B0-94F
>
> SIP to address: sip:UserA at AAA.BBB.CCC.DDD
>
> SIP tag: D33F86B0-94F
>
> Message From Cisco AS5300 to OpenSER
>
> Session Initiation Protocol
>
> Status-Line: SIP/2.0 200 OK
>
> Status-Code: 200
>
> Resent Packet: False
>
> Message Header
>
> Via: SIP/2.0/UDP 
> WWW.XXX.YYY.ZZZ;branch=z9hG4bK6a82.677fb8e1.0,SIP/2.0/UDP 
> FFF.GGG.HHH.III:50841;branch=z9hG4bK90436408698e6881
>
> From: <sip:UserB at WWW.XXX.YYY.ZZZ>;tag=266f5f157860b9ca
>
> SIP from address: sip:UserB at WWW.XXX.YYY.ZZZ
>
> SIP tag: 266f5f157860b9ca
>
> To: <sip:UserA at AAA.BBB.CCC.DDD>;tag=D33F86B0-94F
>
> SIP to address: sip:UserA at AAA.BBB.CCC.DDD
>
> SIP tag: D33F86B0-94F
>
>------------------------------------------------------------------------
>
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