[SIPForum-discussion] ExpiresHeader in Invite Message

[amit]

Thanks abhishek

you are right yaar...











On Tue, 2007-07-31 at 18:34 +0530, Abhishek Mishra wrote:

> Hi Amit,
> 
> Please see the comments inline.
> 
> Kind Regards,
> -Abhishek
> 
> 
> On Tue, 2007-07-31 at 12:24, amit wrote:
> > hi all,
> > 
> > 
> > when we are sending invite message with ExpiresHeader( with expire time
> > 10 sec.)..
> [Abhishek] I assume that you are sending the INVITE and hence you are
> UAC
> > 
> > we are not received CANCEL after 10 sec. when we are not ACCEPTED the
> > call.
> [Abhishek] Here, your statement is conflicting. If you have sent INVITE
> with Expires header equal to 10 seconds, then you would have to send
> CANCEL after you INVITE method expires. In this case you would not
> (infact can not) receive a CANCEL from UAS. If message is sent to the
> proxy, then proxy may send "480 Request Timeout" after 10 seconds.
> 
> On the other hand, if you are UAS and you have received an INVITE with
> Expires header, then you may expect CANCEL after the message expires. If
> you are not receiving CANCEL, then the calling endpoint is misbehaving.
> > 
> > 
> > 
> > 
> > 
> > 
> > Thanks & Regards,
> > 
> > Amit
> > 
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