Hi Attila,
If an outbound proxy server is configured for a UA, the 1st outgoing
INVITE should go to the out-bound proxy server at the configured network address
and transport port. Thereafter, *if and only if* the OB proxy *wishes* to remain
in the signaling path, it should "Record-Route" the INVITE when proxying it to
the next hop so that all requests/responses within that INVITE-created dialog
will traverse that OB proxy. The UA must then handle dialogs as described (in
detail) in RFC 3261, section 12 and RFC 3263 (normal UA operation).
If the early dialog is to be CANCELed, then the CANCEL must also go to
the original INVITE destination, here the outbound proxy, at the same network
address and the same transport port.
In a practical implementation scenario, a UA will send
* the 1st INVITE,
* the CANCEL for that INVITE and
* all REGISTER requests
to the configured out-bound proxy server network address and at the
configured out-bound proxy server transport port.
Warm Regards,
Jerry Ipe Thomas
Engineer (R&D)
D-Link India Ltd.
Software and R&D Center
#65, 35th Main
100 ft. Ring Road
2nd Stage, B.T.M Layout
Bangalore - 560068
PSTN: +91-80-26788350/1 Ext: 117
Cell: +91-9886442530
-----Original Message-----
From: Attila Sipos [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 19, 2004 6:25 PM
To: [EMAIL PROTECTED]
Subject: [Sip-implementors] Outbound Proxy
Hello all.
As fas as I understand, if a UA is configured to use an
"Outbound Proxy", the UA will send its requests to the
OutBound Proxy.
Is this the case for ALL requests?
If the Route set says send it somewhere else, should the
UA still send the request to the OB Proxy?
What about responses?
I guess all responses should just go back to the destination
indicated by the top Via. Is this correct? Or should responses
go via the Outbound proxy too?
Regards,
Attila
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