23 Oct
2023
23 Oct
'23
10:06 a.m.
Hi Karsten
how are you measure the traffic you don't want to
your Homer? Print stuff
in that Kamailio event route or something else?
Basically, I want to mirror sip messages to homer, only sip messages
relevant to calls, not anything else which might be processed by
kamailio.
modules.inc:loadmodule "siptrace.so"
modules.inc:modparam("siptrace", "trace_flag", 22);
modules.inc:modparam("siptrace", "trace_on", 1)
modules.inc:modparam("siptrace", "trace_mode", 1)
modules.inc:modparam("siptrace", "hep_mode_on", 1)
modules.inc:modparam("siptrace", "hep_version", 3)
modules.inc:modparam("siptrace", "hep_capture_id", HEP_CAP_AGENT)
modules.inc:modparam("siptrace", "duplicate_uri", HOMERSIPURI)
I also use the xhttp interface for jsonrpc and a custom API.
For this I have kamailio also listen to TCP port 8080 to have those API
xhttp requests clearly separated from call traffic.
But, as I understand, xhttp requests are initially handled as if they
were sip requests and get processed request_route{}
So my request route starts with:
request_route {
# Handle DMQ requests
route(DMQ_CAPTURE);
# Make sure we operate on the correct port (not on the xhttp one)
if ($Rp != 5060 && $Rp != 5061) {
xlog("L_ERROR", "REQUEST_ROUTE $rm to wrong port
$Rp\n");
exit;
}
so all SIP method requests to port 8080 are being dropped.
I process xhttp traffic with the appropriate event route and of course
reject http requests to sip ports with the appropriate http error
message.
event_route[xhttp:request] {
if ($avp(debug) > 0) {
xlog("L_INFO", "$cfg(route): XHTTP Request to URI: $hu Port: $Rp
BODY: $rb\n");
}
if ($Rp != 8080) {
# We got a HTTP Request on a sip port. Reject!
xhttp_reply("418", "I'm a teapot", "text/html",
"<html><body>I'm not a Web-Server!</body></html>");
exit;
}
if ($hu =~ "^/RPC") {
### KAMAILIO JSONRCP pass-through
jsonrpc_dispatch();
} else if ($hu =~ "^/API") {
### IMPROWARE API
[...]
What I observe is the siptrace module being triggered right at the
start of request_route. This makes sense, I want to mirror every sip
message.
But his also causes mirroring of the xhttp requests and replies to port
8080.
Is there a way to prevent this?
siptrace has an event route capable of filtering, as I understand it is
only possible to filter on the SIP request method, not anything else:
event_route[siptrace:msg] {
if(is_method("KDMQ")) {
drop();
}
}
Do I miss something? How can I prevent/filter xhttp requests to be
mirrored by the siptrace module?
Mit freundlichen Grüssen
-Benoît Panizzon-
--
I m p r o W a r e A G - Leiter Commerce Kunden
______________________________________________________
Zurlindenstrasse 29 Tel +41 61 826 93 00
CH-4133 Pratteln Fax +41 61 826 93 01
Schweiz Web http://www.imp.ch
______________________________________________________