19 Dec
2009
19 Dec
'09
4:41 a.m.
On 12/19/09 10:35 AM, Olle E. Johansson wrote:
[...]
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.
Thanks for the clarification. Lot's of interesting misunderstandings in
this thread :-)
The documentation is not very rich regarding these two functions, I have
to say, hopefully someone will find time to put more there :-) :
http://kamailio.org/docs/modules/3.0.x/modules_k/textops.html#id2494805
Cheers,
Daniel
--
Daniel-Constantin Mierla
* http://www.asipto.com/
>
>
>> 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().
>
>
Oh, I see. I did not realise append_hf() always applied to the request context only.
Thanks a lot! Learn something new every day.
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.