27 Jan
2022
27 Jan
'22
2:50 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 $http* values.
It seems that my AUTH_REPLY route is called but considered as a
"failure_route"
19(27) exec: *** cfgtrace:dbg_cfg_trace(): failure_route=[AUTH_REPLY]
c=[/etc/kamailio/kamailio.cfg] l=665 a=16 n=if
17(23) NOTICE: <script>: [AUTH_REPLY] FAILURE ROUTE
If I remove the http_async_client and try with route(AUTH_REPLY) then it is
considered as request_route (but this is not a solution since I need to do
this http request)
Do you see something that I am doing wrong or missing in my logic?
Is pausing/resuming to use the async http client is allowed if I'm handling
a REGISTER transaction?
Here's a simplified version of my routing block (not far from reality):
##### SNIP
request_route{
route(AUTH);
route[AUTH]{
if (is_method("REGISTER"){
if(no_auth_header){
www_challenge("$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");
if(t_is_failure_route()) {
xlog("L_NOTICE", "[AUTH_REPLY] FAILURE ROUTE \n\n");
}
}
}
##### END SNIP
Best regards!