The Via header tells that IP address/port where the response should be sent. It does not specify from where the request has been come, as the ports for sending request and receiving responses can be different. I think the only way we can tell is by seeing the sending ip and port in IP header of the packet. Please correct if I am wrong.
Thanks, Anil This email contains material that is confidential. The content of this email is for the sole use of the intended recipient(s). Any review or distribution by persons other than the intended recipient(s) without the express permission of NetScreen Technologies, Inc. is strictly prohibited. If you are not the intended recipient, please contact the sender and delete/destroy all copies of this email and any related attachments. NetScreen does not guarantee the accuracy or completeness of third party materials or information. -----Original Message----- From: xiao'tong liang [mailto:[EMAIL PROTECTED] Sent: Sunday, February 22, 2004 6:07 PM To: Anil Bollineni Subject: Re: [Sip] From Header Via header. -- xiaotong --- Anil Bollineni <[EMAIL PROTECTED]> wrote: > Hi All, > > > > I understand from the following statement in > RFC, that From header > SHOULD not contain IP addresses/ports from whom the > request has come. If it > is so, I can't assume that the information is not > used to assume from where > (IP address/port) the request has come. Appreciate > your response to clarify > the point. > > > > As such, it is very important that the From URI > not contain IP addresses > or the FQDN > > of the host on which the UA is running, since > these are not logical > > names. > > > > Thank you, > > Anil > > > > This email contains material that is confidential. > The content of this email > is for the sole use of the intended recipient(s). > Any review or distribution > by persons other than the intended recipient(s) > without the express > permission of NetScreen Technologies, Inc. is > strictly prohibited. If you > are not the intended recipient, please contact the > sender and delete/destroy > all copies of this email and any related > attachments. NetScreen does not > guarantee the accuracy or completeness of third > party materials or > information. > > > > __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
