3 Feb
2022
3 Feb
'22
1:54 p.m.
Hi Olle,
I prefer not to use it since you rightly pointed out that it will block the
thread during the request.
Since a lot of sip phones will register & interact with kamailio it could
seriously hurt the performance.
I will implement caching for sure regardless of the
async/non-async-non-optimal solution, but I still hope that this issue will
be solved.
Cheers,
Cyril
Le jeu. 3 févr. 2022 à 07:57, Olle E. Johansson <oej(a)edvina.net> a écrit :
On 2 Feb 2022, at 23:58, Cyril Ramière <cyril.ramiere(a)gmail.com> wrote:
Hi Karsten,
Thanks for the clue, unfortunately I can't use this module because the
clients are "dumb" sip phones.
The goal of my implementation is to use our application API to handle the
login.
The plan was that a sip phone sends a REGISTER, I ask the API endpoint if
this user/password is ok to connect and allow/deny based on the reply and
informations provided by the API.
Everything is relying on the fact that I can make my HTTP call when
handling the REGISTER, sadly for me, it doesn't work and I still can't
figure why.
Try http_client. I’ve used it a lot of time for authentication. It will
block your thread while waiting for response, but you can handle some of
those issues by caching secrets for a short time with htable.
/O
Cheers,
Cyril
Le mer. 2 févr. 2022 à 19:49, Karsten Horsmann <khorsmann(a)gmail.com> a
écrit :
Hi Cyril,
This Kamailio module could imho do the same
https://www.kamailio.org/docs/modules/devel/modules/auth_ephemeral.html
Cyril Ramière <cyril.ramiere(a)gmail.com> schrieb am Do., 27. Jan. 2022,
08:04:
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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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