[asterisk-dev] Add SIP Header with PJSIP in C module

[Benoit Duverger]

Thanks for your quick answer.

I'm not sure to understand how Pre-Dial Handlers can help my module written
in C. But if I decide to rewrite this module in asterisk language, that
could help me. For the moment I hope to fix my C module.

A big resume of what this part of my module do is:
pbx_exec(chan, "SipAddHeader(X-MyHeader:valuetest)");
pbx_exec(chan, "Dial(SIP/101 at trunk-test,10)");
That works in asterisk 1.8, 11 and probably in asterisk 16 if I use
chan_sip but SipAddHeader is no longer a valid application in my asterisk
because I don't load chan_sip.so, just all modules related to PJSIP.

So with PJSIP, I try:
pbx_builtin_setvar_helper(chan, "PJSIP_HEADER(add,X-MyHeader)",
"valuetest");
pbx_exec(chan, "Dial(PJSIP/101 at trunk-test,10)");

I didn't have any errors but my header is not added.

Thanks


Le mer. 21 oct. 2020 à 12:23, Richard Mudgett <rmudgett at digium.com> a
écrit :

> You add headers in a similar way as before.  It is just a matter of adding
> them to the right channel.
> You must add them to the outgoing channel for PJSIP.  This can be
> accomplished by using pre-dial handlers [1][2].
>
> Richard
>
> [1] https://wiki.asterisk.org/wiki/display/AST/Pre-Dial+Handlers
> [2]
> https://www.asterisk.org/dialplan-handler-routines-allow-customization/
>
> On Wed, Oct 21, 2020 at 10:49 AM Benoit Duverger <bduverger at atwtech.com>
> wrote:
>
>> Hello,
>>
>> We have a module written in C which was developed initially for asterisk
>> 1.4, modified a few years ago to run in asterisk 1.8 then 11. This module
>> is used to verify user's limits, route calls etc...
>> Actually, I try to adapt it to run in asterisk 16, I moved from chan_sip
>> to PJSIP and I don't know how can I add SIP Headers into the channel. With
>> chan_sip we used that:
>> sprintf( cmd, "SipAddHeader(command:%s)", command );
>> res = astcmd( chan, cmd );
>> astcmd is a custom function wrapped onto pbx_exec().
>>
>> I tried to use pbx_builtin_setvar_helper(), with the function
>> PJSIP_HEADER() but I didn't see any custom headers in SIP... and no errors,
>> res = 0.
>> res = pbx_builtin_setvar_helper(chan, "PJSIP_HEADER(add, X-test)",
>> "test");
>>
>>
>> How can I use PJSIP_HEADER in a C module ?, which libraries should I need
>> to import ?
>>
>> Thanks
>>
>> --
>>
>> Benoit
>> --
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