[SR-Users] REGISTER with http_async_client ?

[Federico Cabiddu]

Hi Cyril,
it is normal that the callback route is considered a failure route, this is
the internal behavior of transaction suspension/resume as implemented by
the tm module.
Are you sure that there is no other SIP message interfering with your flow?
Could you set kamailio loglevel to 3 to see what happens?

Cheers,

Federico

On Mon, Jan 31, 2022 at 10:41 AM Cyril Ramière <cyril.ramiere at gmail.com>
wrote:

> Hi Frederico,
>
> (sorry for the double posting today, despite telling gmail to not put
> messages from this mailing il the spam folder, it has done it again :/ )
>
> Thanks for your reply, I tried your suggestion and sadly it has
> not worked, I still have the same error.
> Upon searching and digging through the logs I still can't understand why
> after the http client is doing it's request, the debugger shows that we are
> not in "request" route but in "failure" route instead, I don't know if this
> is a consequence or a symptom of the issue.
>
> I triple checked my mock api, it returns a http 200 and sees the request
> made by the http client.
>
> Cheers
>
> Le jeu. 27 janv. 2022 à 16:17, Federico Cabiddu <
> federico.cabiddu at gmail.com> a écrit :
>
>> Hi,
>> I'm running a scenario very similar to yours with kamailio 5.5.3 and I
>> have no issue.
>> The only difference with your scenario is that I don't do the challenge
>> with the client, I always reply 403 and release the transaction after.
>> I didn't have the time to replicate your exact scenario but it could be
>> worth trying to add a t_release() after the www_challenge().
>>
>> Cheers,
>>
>> Federico
>>
>> On Thu, Jan 27, 2022 at 8:04 AM Cyril Ramière <cyril.ramiere at gmail.com>
>> wrote:
>>
>>> Hi there,
>>>
>>> I have a weird issue with kamailio (latest docker
>>> image kamailio-ci:5.5.2-alpine) and http_async_client.
>>>
>>> Before posting a lot of logs, let me describe what I want to achieve.
>>>
>>> I have a Kamailio and a SIP Phone.
>>>
>>> The SIP phone sends a REGISTER to kamailio, then in my routing block, I
>>> check if I have an Authorization header.
>>>
>>> Since I don't have an Authorization (first message), I
>>> use "www_challenge()".
>>> This replies to the SIP phone, and then the SIP phone sends a new
>>> REGISTER with the correct Authorization header.
>>>
>>> So far so good.
>>>
>>> Now, when I get the REGISTER with Authorization header, I want to ask an
>>> HTTP endpoint if this user is allowed to connect and check the password
>>> using http_async_query().
>>>
>>> The problem is that when the transaction resumes, the tmx module is
>>> unhappy and throws this error :
>>>
>>> 30(36) CRITICAL: tmx [t_var.c:546]: pv_get_tm_reply_code(): no picked
>>> branch (-1) for a final response in MODE_ONFAILURE
>>>
>>> And a 500 error is sent back to the sip phone.
>>> The AUTH_REPLY route is still called and I can use the $http* values.
>>>
>>> Do you see something that I am doing wrong or missing in my logic?
>>> Is pausing/resuming to use the async http client is allowed if I'm
>>> handling a REGISTER transaction?
>>>
>>> Here's a simplified version of my routing block (not far from reality):
>>>
>>> ##### SNIP
>>>
>>> request_route{
>>>
>>> route(AUTH);
>>>
>>>
>>> route[AUTH]{
>>>
>>>     if (is_method("REGISTER"){
>>>
>>>         if(no_auth_header){
>>>
>>>             www_challenge("$td","1");
>>>
>>>             exit;
>>>
>>>         }
>>>
>>>         else{
>>>
>>>             t_newtran();
>>>
>>>             http_async_query("http://xxx.xxx.xxx.xxx:9000/auth?foo=bar", "AUTH_REPLY");
>>>
>>>         }
>>>
>>>     }
>>>
>>> }
>>>
>>>
>>> route[AUTH_REPLY]{
>>>
>>>     xlog("L_INFO", "route[HTTP_REPLY]: status $http_rs\n");
>>>
>>> }
>>>
>>>
>>> }
>>>
>>> ##### END SNIP
>>>
>>>
>>> Best regards!
>>> __________________________________________________________
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>> __________________________________________________________
>> Kamailio - Users Mailing List - Non Commercial Discussions
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>>
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions
>   * sr-users at lists.kamailio.org
> Important: keep the mailing list in the recipients, do not reply only to
> the sender!
> Edit mailing list options or unsubscribe:
>   * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
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