19 Dec
2009
19 Dec
'09
4:28 a.m.
On 12/19/09 9:50 AM, Olle E. Johansson wrote:
18 dec 2009 kl. 22.27 skrev Alex Balashov:
a clarification for above: in onreply_route you process the reply and
append_hf() adds a header to reply.
To put it in another words:
- in route {...} - sip request is processed and append_hf() adds a
header to that request. If you want to send a reply for that request
from kamailio, then append_to_reply() can be used to add headers in the
to-be-built reply
- in onreply_route - sip reply is processed and append_hf() adds a
header to that reply. append_to_reply() cannot be used in onreply_route.
Cheers,
Daniel
--
Daniel-Constantin Mierla
* http://www.asipto.com/
On 12/18/2009 04:24 PM, Daniel-Constantin Mierla
wrote:
I think the confusion is about which message you process in the on_reply
branches - you actually process the initial request that you triggered with a reply route
in the initial processing, not the reply. Thus if you use append_hf - you add a header to
the request, not the response.
Hi Alex,
On 12/18/09 9:57 PM, Alex Balashov wrote:
Oh, I see. I did not realise append_hf() always applied to the request
context only. Thanks a lot! Learn something new every day.
Daniel,
But the documentation
http://www.kamailio.org/docs/modules/1.5.x/textops.html#id2506229
says that append_hf() can be used inside a reply route?
yes, it can be used. The nuance in the initial question, as I
understood, was to add a header to a reply for current processed
request. with append_hf you add a header to the current processed sip
message (no matter is request or reply).
append_to_reply() adds a header to any eventual reply kamailio may send
for the request being processed, not visible in the request if that is
forwarded.
Just to give an example, save("location") sends a reply from inside the
function. If you want to have a custom header in that reply, that can be
done with append_to_reply().