Hi, Thanks for the reply. I, however, use only one proxy and that single proxy has inserted 3 via headers of its own. Please see the Invite from the UA and the corresponding Invite forwarded by the proxy below. My question again is- Is it OK to have more than one Via headers inserted by a single proxy? Is it defined in RFC?
Thanks Padmaja On Fri, Jun 13, 2008 at 4:29 PM, Avasarala Ranjit-A20990 < [EMAIL PROTECTED]> wrote: > > Yes it is correct to have multiple Vias in a SIP Request. It indicates > how many proxies the request has gone thru before reaching the final > destination. > > Actually as per RFC 3261, every proxy adds a Via header inserting its > own address before forwarding the request further. This is explained in > section 4 of RFC 3261. > > > Regards > Ranjit > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > padmaja venkata > Sent: Friday, June 13, 2008 4:17 PM > To: [email protected] > Subject: [Sip-implementors] Proxy forwarding invite with multiple via > headers > > Hi all, > > Is it OK if the proxy forwards the received invite with multiple via > headers of its own inserted? > > For example: > > The received invite is this: > > INVITE sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> < > [EMAIL PROTECTED] <[EMAIL PROTECTED]>> SIP/2.0 > Call-Id: [EMAIL PROTECTED] > Contact: <sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> < > [EMAIL PROTECTED] <[EMAIL PROTECTED]>>> > Content-Length: 249 > Content-Type: application/sdp > Cseq: 1 INVITE > From: <sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> > <[EMAIL PROTECTED] <[EMAIL PROTECTED]>>>;tag=c0a832cd-17 > Max-Forwards: 16 > Min-Se: 600 > Session-Expires: 3600 > Session-Guid: 859321956-1634023014-905969664-2513471912 > Supported: 100rel,timer > To: <sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> < > [EMAIL PROTECTED] <[EMAIL PROTECTED]>>> > User-Agent: Quintum/1.0.0 SN/0030E12004B0 SW/P106-11-00 > Via: SIP/2.0/UDP 192.168.50.205;branch=z9hG4bK-tenor-c0a8-32cd-0033 > > The proxy at 192.168.50.52 forwarded this as follows: > > INVITE sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> < > [EMAIL PROTECTED] <[EMAIL PROTECTED]>> SIP/2.0 > Record-Route: <sip:192.168.50.52:5060 > ;lr;sipXecs-rs=%2Afrom%7EYzBhODMyY2QtMTc%60.400_authrules%2Aauth%7E%2115 > 90e935cd4ae900a36d10202f501d7c> > Call-Id: [EMAIL PROTECTED] > Contact: <sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> < > [EMAIL PROTECTED] <[EMAIL PROTECTED]>>> > Content-Length: 249 > Content-Type: application/sdp > Cseq: 1 INVITE > From: <sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> > <[EMAIL PROTECTED] <[EMAIL PROTECTED]>>>;tag=c0a832cd-17 > Max-Forwards: 16 > Min-Se: 600 > Session-Expires: 3600 > Session-Guid: 859321956-1634023014-905969664-2513471912 > Supported: 100rel,timer > To: <sip:[EMAIL PROTECTED] <[EMAIL PROTECTED]> < > [EMAIL PROTECTED] <[EMAIL PROTECTED]>>> > User-Agent: Quintum/1.0.0 SN/0030E12004B0 SW/P106-11-00 > Via: SIP/2.0/UDP 192.168.50.52 > ;branch=z9hG4bK-sipXecs-0137aac61e5301ead76e6566cdb0f2d3be5e > Via: SIP/2.0/UDP 192.168.50.52 > ;branch=z9hG4bK-sipXecs-0134499c81a909946eaed847046c2535f409%e8c783cad7e > e777c922618d09949ebd4 > Via: SIP/2.0/UDP 192.168.50.52 > ;branch=z9hG4bK-sipXecs-012ea2e73188173f014705446d987568ab32%dbb67e4f9a5 > bca399689a4d127429e37 > Via: SIP/2.0/UDP 192.168.50.205;branch=z9hG4bK-tenor-c0a8-32cd-0033 > > There are 3 via header fields inserted by proxy. Is this OK and in > accordance with the RFC? > > Thanks, > Padmaja > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
