Examples: Kamailio

KAMAILIO 4.x Trace Node

SIP capture functionalities are built into core kamailio. We have to only load required module, initialize it with the appropriate parameters and modify routing logic to use it. To keep the changes flexible and clean, this excample uses directives which allow us to simply switch on/off the additional functionality:

kamailio.cfg

First, define WITH_HOMER directive at the head of your script:

#!define WITH_HOMER

Next, move to the loadparam section of the script, and add a condition for siptrace:

#!ifdef WITH_HOMER
loadmodule "siptrace.so"
#!endif

NOTE: siptrace module MUST be loaded after loading mysql and tm modules!

Next, configure the basic parameters for the module:

#!ifdef WITH_HOMER
# check IP and port of your capture node
modparam("siptrace", "duplicate_uri", "sip:10.0.0.1:9060")
modparam("siptrace", "hep_mode_on", 1)
modparam("siptrace", "trace_to_database", 0)
modparam("siptrace", "trace_flag", 22)
modparam("siptrace", "trace_on", 1)
#!endif

Finally, use SIPTRACE in your route {} logic where needed:

#!ifdef WITH_HOMER
        #start duplicate the SIP message now
        sip_trace();
        setflag(22);
#!endif