Hi.
After reading through the SIP RFC again, I realize that Sofia-SIP is of course
behaving correctly. Since the source IP differs from the IP in the top Via
header, we add a "received" parameter to the Via when receiving the NOTIFY.
Then when it comes time to send a response, since there is a "received" address
it is used.
I've rejected the customer trouble report from which this question originated.
;)
/Björn
________________________________
From: Björn Stenborg [mailto:bjorn.stenb...@enea.com]
Sent: den 11 maj 2009 18:44
To: Sofia-sip-devel@lists.sourceforge.net
Subject: [Sofia-sip-devel] OK to NOTIFY not sent to Via header address
Hi!
When we receive NOTIFY messages, Sofia-SIP automatically answers correctly with
a 200 OK. However, the OK should be sent to the address contained in the Via
header according to RFC 3261 (section 18.2.2), but it currently seems to be
sent to the IP and port from which the notification came. The Via does not
contain "rport".
Please see the attached Wireshark capture for a small example. The NOTIFY
specifies "Via: SIP/2.0/udp
127.0.0.1:5082;branch=z9hG4bK4acf5ed2a2e6b85f252b78ac0b2d88ec" but the reply is
sent by Sofia-SIP to the originating IP and port instead.
Is there some fallback mechanism in case the Via specifies a IP:port that is
unreachable or not open?
Best regards,
Björn Stenborg
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