>>Is there any specific thing that has to be followed for UDP? Not really. As long the as flow token stored in the Via records the remote IP and port. For TCP, you need to record the socket number and make sure you don't close the socket (you can close it after the keepalive has expired)
>>Where and what should be stored to maintain the same flow in case of edge proxy and registrar in different node? This is a little bit harder. If proxy and registrar are in the same node, it's quite easy. If not in the same node, then I'd recommend Sergio's comments from here: http://www.ietf.org/mail-archive/web/sip/current/msg21331.html putting his comments together: >> Our approach tries to use the flow token also in responses: we just >>put the flow token in the Via. As mentioned before: >> -the UA stores the flow token when it receives a 200 OK after REGISTER; >> -then it puts it into every SIP request that is sent over a flow; >> -then the edge proxy copies the flow token to the URI part of the Via >>when it composes the Via before to forward the message. >> -Later, when the response arrives at the edge proxy, it tries to >>decode the flow token in the Via, if it succeeds, it forwards the >>response over the flow indicated in the flow token. >>Why there was no discussion about mid-dialog and double record route in outbound draft? No idea. Maybe it was considered too awkward. Regards, Attila ________________________________ From: Karthikeyan Gopal [mailto:[EMAIL PROTECTED] Sent: 08 October 2008 10:23 To: Attila Sipos Cc: [email protected]; [EMAIL PROTECTED] Subject: RE: [Sip] stateless proxy support Outbound ? Is there any specific thing that has to be followed for UDP? Where and what should be stored to maintain the same flow in case of edge proxy and registrar in different node? Why there was no discussion about mid-dialog and double record route in outbound draft? Regards, Karthikeyan.G ________________________________ From: Attila Sipos [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 08, 2008 2:32 PM To: Karthikeyan Gopal Subject: RE: [Sip] stateless proxy support Outbound ? Yes, it can. Regards, Attila ________________________________ From: Karthikeyan Gopal [mailto:[EMAIL PROTECTED] Sent: 08 October 2008 09:59 To: Attila Sipos Subject: RE: [Sip] stateless proxy support Outbound ? Thanks Attila. I have one more query .Can Outbound be implemented with UDP transport? Thanks & Regards, Karthikeyan.G ________________________________ From: Attila Sipos [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 08, 2008 12:26 PM To: Karthikeyan Gopal ; [EMAIL PROTECTED]; [email protected] Subject: RE: [Sip] stateless proxy support Outbound ? It is possible - to do it you have to store the flow information in a Via parameter (or mix it into the branch, if you prefer). Unfortunately, the draft does not discuss stateless proxies Regards, Attila PS I did have a discussion with someone about this but it might be a bit confusing (it's just a big mess of e-mails). if you want to look at some main points, here are some links: http://www.ietf.org/mail-archive/web/sip/current/msg21238.html http://www.ietf.org/mail-archive/web/sip/current/msg21245.html http://www.ietf.org/mail-archive/web/sip/current/msg21249.html http://www.ietf.org/mail-archive/web/sip/current/msg21331.html http://www.ietf.org/mail-archive/web/sip/current/msg21344.html ________________________________ size=2 width="100%" align=center tabIndex=-1> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Karthikeyan Gopal Sent: 08 October 2008 06:30 To: [EMAIL PROTECTED]; [email protected] Subject: [Sip] stateless proxy support Outbound ? Hi All, Can stateless proxy support Outbound? If so why it was not mentioned clearly in draft? Where to store the flow info? Thanks & Regards, Karthik DISCLAIMER: ------------------------------------------------------------------------ ----------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. ------------------------------------------------------------------------ ----------------------------------------------- . .
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