[SR-Users] REGISTER with http_async_client ?

[Federico Cabiddu]

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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