[OpenSIPS-Users] 3.1 - access Path and Via values from REGISTER

Johan De Clercq Johan at democon.be
Mon Aug 3 10:00:20 EST 2020

I think that you are right.
If you want to see it, loopback the message.

Op ma 3 aug. 2020 om 11:16 schreef Mark Allen <mark at allenclan.co.uk>:

> Would I be right in thinking that the reason I cannot immediately see the
> "path" value added by the add_path_received() call is because of how the
> lumps system works - i.e.
>   "lumps are stored in a list, and are only applied
>    after the OpenSIPS script is fully executed and
>    before the SIP message is relayed. Because of
>    this, changes done on a SIP message are not
>    immediately reflected on the SIP message upon
>    further inspection ( eg. Adding a new header from
>    the script and then checking for the header's
>    existence )."
> From: https://www.opensips.org/Documentation/Development-Manual
> On Thu, 30 Jul 2020 at 16:24, Mark Allen <mark at allenclan.co.uk> wrote:
>> Seeking to find a workaround for the problem I'm having with WebRTC and
>> AOR throttling (
>> http://lists.opensips.org/pipermail/users/2020-July/043542.html) I want
>> to access the values of the "Via" and "Path" headers that are being passed
>> to the registrar.
>> Using sngrep on the OpenSIPS server I can see the REGISTER includes Path
>> and Via headers. If I try to access them with  $(hdr(Path)[0])  or
>>  $(hdr(Via)[0])  I get nothing, but I can access the values of all the
>> other headers without any problem - e.g.  $(hdr(Authorization)[0]). What am
>> I missing or is there another way to get the info used in the Via
>> and particularly in creating the Path header values???
>>   add_path_received();
>>   xlog("!!!!!!!!!!!! $(hdr(Path)[0]) !!!!!!!!!!");
>>   $avp(attr) = $(hdr(Path)[0]);
>>   mid_registrar_save("location","p0v");
>> The code gives an "attr" value in the "location" table of "NULL"
>> /var/log/syslog shows:
>>   Jul 30 16:13:17  /usr/sbin/opensips[27423]: !!!!!!!!!!!! <null>
>> !!!!!!!!!!
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