RE: [Sip] From Header

Hi Anil,

If I understand you correctly then I think you want to know the sender's
IP and port number. This information can be obtaine from the SDP. Via
header gives information of Proxy not of sender's.

Ranjit

-----Original Message-----
From: sip-admin@ietf.org [mailto:sip-admin@ietf.org] On Behalf Of Anil
Bollineni
Sent: Tuesday, February 24, 2004 12:43 AM
To: 'xiao'tong liang'
Cc: 'sip@ietf.org'; 'sip-implementors@cs.columbia.edu'
Subject: RE: [Sip] From Header

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

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-----Original Message-----
From: xiao'tong liang [mailto:boyliangxt@yahoo.com] 
Sent: Sunday, February 22, 2004 6:07 PM
To: Anil Bollineni
Subject: Re: [Sip] From Header

Via header.

--
xiaotong

--- Anil Bollineni <ABollineni@netscreen.com> 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.
> 
>  
> 
> 

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