hi Vivek,
Can you point to the document which describes the "Default Proxy"
forwarding case in your below example, where a proxy server of A fails to get the
Proxy of domain B through a DNS query . and therefore forwards it to a *default proxy*
!
Is every proxy configured to route calls to a *default proxy* when it's DNS lookup for
the Request URI's domain or lookup for the the target of the Request fails ?
In that case, how good are the chances of the Default proxy Succeeding ?
Can someone please explain !
Cheers.
Simith
[EMAIL PROTECTED] wrote:
If [EMAIL PROTECTED] is calling [EMAIL PROTECTED] Proxy of a.com will do DNS look up
to get
the IP address of Proxy of b.com.
IF proxy A fails then will forward it to next default proxy. And that
proxy will do DNS lookup.
IF proxy A succeeds then INVITE will be forwarded to b.com proxy. Proxy
of b.com will search it in its Location server and then it can decide to
route the call to the person ([EMAIL PROTECTED]) or to next internal
proxy ([EMAIL PROTECTED]).
Vivek
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Suresh P
Sent: Friday, September 03, 2004 4:14 PM
To: 'SiM'; 'Sip-Implementors (E-mail)'
Subject: RE: [Sip-implementors] Proxy routing
My question is how a.com identifies the B''s proxy? a.com only have the
B's
IP/domain name. Will DNS look up will provide IP address of the
proxy
where B's connected?
Hope the question is clear. May be too basic.....
-Suresh
-----Original Message-----
From: SiM [mailto:[EMAIL PROTECTED]
Sent: Friday, September 03, 2004 3:33 PM
To: Suresh P; Sip-Implementors (E-mail)
Subject: Re: [Sip-implementors] Proxy routing
Hi Suresh,
I do not fully understand your Question,
If you are considering the case of
[EMAIL PROTECTED] [EMAIL PROTECTED]
a ---------------> b , a calling b.
a.com proxy can perform a DNS lookup and find IP of b's proxy.
and then send the request there, which can forward the request to B ,
based on B's registration in the particular domain.
Maybe there are other ways also, which i'am not sure of.
refer Rfc 3261, Alice and Bob example, if the above is what the
scenario
you are looking for !
Cheers.
Simith
Suresh P
wrote:
Hi All,
A basic question.
1. if the reciever and senders are in different domain, the proxy
server
sends the request to a different proxy server supporting SIP. how
does
the
proxy know which proxy is the reciever connected to ?? is the
request
broadcasted ?
Regards,
-Suresh
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