[SR-Users] Critical log when $mbu pseudovariable is accessed

[Daniel-Constantin Mierla]

You have to use $mbu before record_route() because the outgoing socket
is not known and corresponding Record-Route header is added with empty
address. Same apply for use of msg_apply_changes().

Cheers,
Daniel

On 08.10.21 08:28, Alberto Izquierdo wrote:
> It is also worth mentioning that there are two Record-Route headers,
> the first one is the correct one and contains a valid value, and this
> extra one which does not appear in the egress INVITE in the pcap.
>
> On Thu, Oct 7, 2021 at 9:18 AM Alberto Izquierdo
> <a.izquierdo at zaleos.net <mailto:a.izquierdo at zaleos.net>> wrote:
>
>     Hello Daniel,
>
>     I have just realized about an error in the 'Record-Route" header:
>     "Record-Route: <sip:;r2=on;lr=on;ftag=478.0eb>".
>
>     Thanks for the response.
>
>     On Thu, Oct 7, 2021 at 9:05 AM Daniel-Constantin Mierla
>     <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>         Hello,
>
>         in onsend_route the changes are already applied, use of $mbu
>         makes no sense there -- you can see the updated buffer content
>         with $snd(buf).
>
>         Cheers,
>         Daniel
>
>         On 06.10.21 11:43, Alberto Izquierdo wrote:
>>         Hi,
>>
>>         I'm getting some CRITICAL logs when accessing the content of
>>         the $mbu pseudovariable in a "onsend_route" function. The log
>>         lines look like this:
>>
>>         ```
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         CRITICAL core    35847:core/msg_translator.c:893 FIXME: null
>>         send_sock
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         CRITICAL core    35847:core/msg_translator.c:1479 FIXME: null
>>         bind_address
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         CRITICAL core    35847:core/msg_translator.c:493 null send socket
>>         ```
>>
>>         I've checked the msg_translator.c source file and there are
>>         many of `LM_CRIT("FIXME: {message}\n");` calls, and I wonder
>>         if the "FIXME" tag relates to the location of the error: a
>>         Kamailio error or there is an issue in the user code.
>>
>>         Could I have more information about the "FIXME" tag?
>>
>>         Thanks in advance!
>>
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>
>         -- 
>         Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
>         www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>         Kamailio Advanced Training - Online
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>
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Online
Nov 08-11, 2021 (Europe Timezone) - Nov 22-25, 2021 (America Timezone)
  * https://www.asipto.com/sw/kamailio-advanced-training-online/

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