Hi,
________________________________
From: ext liu yang [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 28, 2008 10:49 AM
To: sofia-sip-devel@lists.sourceforge.net
Subject: [Sofia-sip-devel] disable automatically 200OK response to
incomingCANCEL
Hi all,
Actually I have two question here.
First one is the one explained in mail subject. In detail, we know,
sofia stack automatically responds with 200OK for incoming CANCEL.
My purpose is just to add an special customized SIP header into this
200OK. By checking related code, I didn't find any clue to achieve this.
So without modifying stack code, is there any simple way, like
including a TAG somewhere to meet my requirement?
Try to list CANCEL in NUTAG_APPL_METHOD string.
Second one is more specific to sofia fundamental framework, which is I
expect to prevent some event/signal from being reported to application.
The mechanism is just like, we unmask certain OS signal using
'pthread_signal_mask'. With this methodology, sofia stack only sends event
which application
layer is interested upwards to save both a bit cpu usage of upper
application and sofia stack.
How much CPU usage you're aiming to save, is it anywhere comparable with, say,
media processing?
There are no filters or masks for events AFAIK, but I don't see much use for
them.
Best regards,
Mikhail
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