asterisk users - Jul 2015 - Can I use PJSIP_HEADER to read the SIP 183 message header?

Hi.

The ASTERISK wiki has a page showing the function PJSIP_HEADER(). However, it
doesn't explain if such function works only over SIP INVITE messages or if
it can be use, for example, to read headers from others types of SIP messages
too.

So, can I use PJSIP_HEADER to read the SIP 183 message header?

Any hint will be very helpful! 

Best regards.


RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9200 RAMAL 979     (Brasil)

On 07/10/2015 11:53 AM, Rodrigo Pimenta Carvalho wrote:
> Hi.
>
> The ASTERISK wiki has a page showing the function PJSIP_HEADER(). However,
it doesn't explain if such function works only over SIP INVITE messages or
if it can be use, for example, to read headers from others types of SIP messages
too.
>
> So, can I use PJSIP_HEADER to read the SIP 183 message header?
>
> Any hint will be very helpful!
>
> Best regards.
>
>
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 RAMAL 979     (Brasil)
Unfortunately, PJSIP_HEADER() cannot be used on responses because SIP 
responses do not enter the dialplan.

Ok Mark Michelson.

Thank you very much! You answer tells me that I was in the wrong path trying to
access information from SIP 183 message.

I need to find a way to let the callee pass information/data to the caller, even
before accepting the call. That is, send data during the ringing time. And in my
case, there will be more than one callee ringing at same time. As ASTERISK will
not forward each SIP 183 message to the caller, I intend to get data from
callees in dialplan by some another way before the call being accepted.

1- Is there any way to do that?

2 - SIP MESSAGE, if sent by the calle, enters the dialplan?

 Any hint will be very helpful!

 Best regards.



RODRIGO PIMENTA CARVALHO
Inatel Competence Center
Software
Ph: +55 35 3471 9300     (Brasil)
________________________________________
De: asterisk-users-bounces at lists.digium.com [asterisk-users-bounces at
lists.digium.com] em Nome de Mark Michelson [mmichelson at digium.com]
Enviado: sexta-feira, 10 de julho de 2015 15:14
Para: Asterisk Users Mailing List - Non-Commercial Discussion
Assunto: Re: [asterisk-users] Can I use PJSIP_HEADER to read the SIP 183 message
header?

On 07/10/2015 11:53 AM, Rodrigo Pimenta Carvalho wrote:
> Hi.
>
> The ASTERISK wiki has a page showing the function PJSIP_HEADER(). However,
it doesn't explain if such function works only over SIP INVITE messages or
if it can be use, for example, to read headers from others types of SIP messages
too.
>
> So, can I use PJSIP_HEADER to read the SIP 183 message header?
>
> Any hint will be very helpful!
>
> Best regards.
>
>
> RODRIGO PIMENTA CARVALHO
> Inatel Competence Center
> Software
> Ph: +55 35 3471 9200 RAMAL 979     (Brasil)
Unfortunately, PJSIP_HEADER() cannot be used on responses because SIP
responses do not enter the dialplan.

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