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List: sip-implementors
Subject: Re: [Sip-implementors] Sip proxy
From: "Medhavi Bhatia" <mbhatia () nextone ! com>
Date: 2001-04-30 16:57:36
Message-ID: 009c01c0d196$a8e8c2e0$1fe4b4cc () nextone ! com
[Download RAW message or body]
There are several cases:
1) Intermediate proxy is a stateless proxy. In this case your second description does \
the job. But this will not work for a firewall proxy. 2) Intermediate proxy is the \
firewall. In this case the Contact in the register should be that of the intermediate \
proxy. The UA should also issue a local registration to the intermediate proxy. ( \
There are two registrations here, and there has to be local configuration also for \
GAUTAM on intermediate proxy). 3) Section 4.2.6.1 describes an escape format for the \
request URI, which can be used. In this case the intermediate proxy can forward the \
registration, change the contact address to himself, and store the original contact \
as a dynamic/static configuration. If he is a firewall, he MUST change the contact \
address.
----- Original Message -----
From: Hrishikesh Saria
To: Sip-implementors@cs.columbia.edu
Cc: sip-implementors@list.bell-labs.com
Sent: Monday, April 30, 2001 6:11 AM
Subject: [Sip-implementors] Sip proxy
Hi All
I have a scenario which I am not very clear about.
Lets say I am inside a Lan and my registration with my SIP proxy is HRISHKESH and \
the Sip proxy in my Lan IP is 10.10.10.8, If I want to send a INVITE message to \
someone who is outside his lan, and whose registration with his proxy is GAUTHAM and \
his SIP proxy is 20.20.20.30, what will be the request URI when I send it the \
message to my SIP proxy. Will request line be
INVITE GAUTHAM@10.10.10.8 SIP/2.0 and gautham has to have a registry in my SIP \
proxy
or the request line will be
INVITE GAUTHAM@20.20.20.8 SIP/2.0 but the message will be sent to My proxy whose \
IP is 10.10.10.8.
Regards
Thanks in Advance
Hrishikesh Saria
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<DIV><FONT size=2>There are several cases:</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>1) Intermediate proxy is a stateless proxy. In this case your
second description does the job. But this will not work for a firewall
proxy.</FONT></DIV>
<DIV><FONT size=2>2) Intermediate proxy is the firewall. In this case the
Contact in the register should be that of the intermediate proxy. The UA should
also issue a local registration to the intermediate proxy. ( There are two
registrations here, and there has to be local configuration also for GAUTAM on
intermediate proxy).</FONT></DIV>
<DIV><FONT size=2>3) Section 4.2.6.1 describes an escape format for the request
URI, which can be used. In this case the intermediate proxy can forward the
registration, change the contact address to himself, and store the original
contact as a dynamic/static configuration. If he is a firewall, he MUST change
the contact address.</FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 \
2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message \
----- </DIV> <DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=hrishikesh.saria@eximsoft.com
href="mailto:hrishikesh.saria@eximsoft.com">Hrishikesh Saria</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=Sip-implementors@cs.columbia.edu
href="mailto:Sip-implementors@cs.columbia.edu">Sip-implementors@cs.columbia.edu</A> \
</DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A
title=sip-implementors@list.bell-labs.com
href="mailto:sip-implementors@list.bell-labs.com">sip-implementors@list.bell-labs.com</A> \
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, April 30, 2001 6:11
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Sip-implementors] Sip
proxy</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hi All</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I have a scenario which I am not very clear
about.</FONT></DIV>
<DIV><FONT face=Arial size=2>Lets say I am inside a Lan and
my registration with my SIP proxy is HRISHKESH and the Sip proxy in
my Lan IP is 10.10.10.8, If I want to send a INVITE message to someone
who is outside his lan, and whose registration with his proxy is GAUTHAM and
his SIP proxy is 20.20.20.30, what will be the request URI when I
send it the message to my SIP proxy. Will request line be </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>INVITE <A
href="mailto:GAUTHAM@10.10.10.8">GAUTHAM@10.10.10.8</A></FONT><FONT face=Arial
size=2> SIP/2.0 and gautham has to have a registry in my SIP
proxy </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> or the request line will
be</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>INVITE <A
href="mailto:GAUTHAM@20.20.20.8">GAUTHAM@20.20.20.8</A>
SIP/2.0 but the message will be sent to My proxy whose IP is
10.10.10.8.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Regards</FONT></DIV>
<DIV><FONT face=Arial size=2>Thanks in Advance</FONT></DIV>
<DIV><FONT face=Arial size=2>Hrishikesh Saria</FONT></DIV>
<DIV> </DIV></BLOCKQUOTE></BODY></HTML>
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