27 Jan
2022
27 Jan
'22
3:19 p.m.
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 $http* values.
it seems that my AUTH_REPLY route is called but considered as a
"failure_route"
`19(27) exec: *** cfgtrace:dbg_cfg_trace(): failure_route=[AUTH_REPLY]
c=[/etc/kamailio/kamailio.cfg] l=665 a=16 n=if
`
Do you see something that I am doing wrong or missing in my logic?
Is pausing/resuming to use the async http client is allowed if I'm handling a REGISTER
transaction?
Here's a simplified version of my routing block (not far from reality):
```
request_route{
route(AUTH);
route[AUTH]{
if (is_method("REGISTER"){
if(no_auth_header){
www_challenge("$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");
}
}
```
Best regards!
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