23 Oct
2021
23 Oct
'21
4:26 a.m.
Hi Daniel,
Thanks for checking this. I tried both (avp & dlg_var) and they both worked
fine in the event route.
Thanks!
Joel.
On Fri, Oct 22, 2021 at 06:49 Daniel-Constantin Mierla <miconda(a)gmail.com>
wrote:
Hello,
indeed, there was a change in the behaviour based on the links you
provided. It was not safe to use $T_req() in other route blocks. Maybe for
event_route[dialog:start] would still be ok, because it is executed only on
200ok for INVITE, but dialog:end can be executed on dialog timeout, without
any request/reply within dialog being processed at time.
The solution is to store the source IP of the request avp/xavp (I think
this event route is executed after corresponding transaction match), or in
a dialog variable or in htable (using callid/from tag as a key).
Cheers,
Daniel
On 22.10.21 01:56, Joel Serrano wrote:
I think it could be related to:
https://github.com/kamailio/kamailio/issues/2479
Commit:
https://github.com/kamailio/kamailio/commit/2e7710e292a649c6c57e46d5994d3b2…
Thanks!
Joel.
On Thu, Oct 21, 2021 at 4:22 PM Joel Serrano <joel(a)textplus.com> wrote:
Hello,
I'm in the process of updating some servers that are running Kam v5.1.4
to v5.5.2.
After the upgrade I've noticed that I've lost some custom metrics that we
have defined via config-script.
Snippet of the relevant config:
event_route[dialog:start] {
# Gather metrics regarding source IP
xlog("L_WARN", "[DLG] - Checking country for ($si | $T_req($si)) -
START\n");
if (geoip2_match("$T_req($si)", "src")) {
# Country found
...
}
xlog("L_WARN", "[DLG] - Checking country for ($si | $T_req($si)) -
END\n");
}
NOTE: xlog lines added for debugging, they normally are not there.
In version 5.1.4 in the logs I see:
Oct 21 15:55:47 13cn3 sbc[22606]: WARNING: <script>: [DLG] - Checking
country for (A.B.C.D | 186.185.186.7) - START
Oct 21 15:55:47 13cn3 sbc[22606]: WARNING: <script>: [DLG] - Checking
country for (A.B.C.D | 186.185.186.7) - END
The same config, on v5.5.2 is returning:
Oct 21 15:57:08 sbc0504 sbc[22606]: WARNING: <script>: [DLG] - Checking
country for (A.B.C.D | <null>) - START
Oct 21 15:57:08 sbc0504 sbc[22606]: WARNING: <script>: [DLG] - Checking
country for (A.B.C.D | <null>) - END
After enabling debug logs I see:
WARNING: <script>: [DLG] - Checking country for (198.1.55.124 | <null>) -
START
*DEBUG: tmx [t_var.c:309]: pv_get_t_var_req(): used in unsupported route
block - type 64 *DEBUG: geoip2 [geoip2_pv.c:488]: geoip2_update_pv():
attempt to match: <null>
DEBUG: geoip2 [geoip2_pv.c:491]: geoip2_update_pv(): no match for: <null>
Did something change in the tmx module that could affect $T_req(pv) being
accessible in the dialog:start event_route?
Any alternatives to get the source IP of the request (not the reply) in
the dialog:start event_route?
Let me know if you prefer that I open a ticket for this in GH.
Thanks,
Joel.
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