I'm trying to find a way to differentiate between originating and terminating legs. Currently in kex module, in core_stats.c I'm adding new counters for more response codes, I want to have two sets of counters, one for originating and one for terminating.

In ims_getters.c file, I found a function called cscf_has_originating, which by description "Finds if the message contains the orig parameter in the first Route header"

I'm calling it like the following:
static int km_cb_rpl_stats_by_method(struct sip_msg *msg, unsigned int flags, void *param)
{
    int  originating = cscf_has_originating(msg);
....

However it always returns CSCF_RETURN_FALSE (or -1).

I added a log message and increased log level for core module:
DEBUG: <core> [ims_getters.c:561]: cscf_has_originating(): I_originating: Header Route not found
ERROR: kex [core_stats.c:424]: km_cb_rpl_stats_by_method(): In kex module received rpls, the return value of cscf_has_originating is: -1

That's because cscf_has_originating function is calling parse_headers function, trying to get msg->route
but that route property is not set correctly in the previous step:
        if(parse_headers(msg, HDR_ROUTE_F, 0) < 0) {
                LM_DBG("I_originating: error parsing headers\n");
                return CSCF_RETURN_FALSE;
        }
so it returns -1 after checking msg->route value.

Do you know any alternative solution? or do you know why msg->route value is 0 or NULL?
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