static int nua_refer_client_init(nua_client_request_t *cr,
msg_t *msg, sip_t *sip,
tagi_t const *tags)
{
nua_handle_t *nh = cr->cr_owner;
if (sip->sip_referred_by == NULL) {
sip_from_t *a = sip->sip_from;
sip_referred_by_t by[1];
sip_referred_by_init(by);
if (a == NULL)
a = nh->nh_nua->nua_from;
by->b_display = a->a_display;
*by->b_url = *a->a_url;
sip_add_dup(msg, sip, (sip_header_t *)by);
}
if (sip->sip_event)
sip_header_remove(msg, sip, (sip_header_t *)sip->sip_event);
return 0;
}
static
int nua_refer_server_report(nua_server_request_t *sr, tagi_t const *tags)
{
nua_handle_t *nh = sr->sr_owner;
struct notifier_usage *nu = nua_dialog_usage_private(sr->sr_usage);
sip_t const *sip = sr->sr_request.sip;
sip_referred_by_t *by = sip->sip_referred_by, default_by[1];
sip_event_t const *o = sr->sr_usage->du_event;
enum nua_substate substate = nua_substate_terminated;
int initial = sr->sr_initial, retval;
if (nu) {
if (!sr->sr_terminating)
substate = nu->nu_substate;
}
if (by == NULL) {
by = sip_referred_by_init(default_by);
by->b_display = sip->sip_from->a_display;
*by->b_url = *sip->sip_from->a_url;
}
retval = nua_base_server_treport(sr,
NUTAG_SUBSTATE(substate),
NUTAG_REFER_EVENT(o),
TAG_IF(by, SIPTAG_REFERRED_BY(by)),
TAG_END());
if (retval >= 2 || nu == NULL)
return retval;
if (initial)
nua_stack_post_signal(nh,
nua_r_notify,
SIPTAG_EVENT(o),
SIPTAG_CONTENT_TYPE_STR("message/sipfrag"),
SIPTAG_PAYLOAD_STR("SIP/2.0 100 Trying\r\n"),
TAG_END());
return retval;
}