belle_sip_uri_t *belle_sip_channel_create_routable_uri(belle_sip_channel_t *chan) {
const char *transport = belle_sip_channel_get_transport_name_lower_case(chan);
belle_sip_uri_t* uri = belle_sip_uri_new();
unsigned char natted = chan->public_ip && strcmp(chan->public_ip,chan->local_ip)!=0;
if (natted) {
belle_sip_uri_set_host(uri, chan->public_ip);
belle_sip_uri_set_port(uri, chan->public_port);
} else {
belle_sip_uri_set_host(uri, chan->local_ip);
// With streamed protocols listening port is what we want
if (chan->lp)
belle_sip_uri_set_port(uri, belle_sip_uri_get_port(chan->lp->listening_uri));
else belle_sip_uri_set_port(uri,chan->local_port);
}
belle_sip_uri_set_transport_param(uri, transport);
belle_sip_uri_set_lr_param(uri, TRUE);
return uri;
}
static void add_initial_route_set(belle_sip_request_t *request, const MSList *list){
const MSList *elem;
for (elem=list;elem!=NULL;elem=elem->next){
SalAddress *addr=(SalAddress*)elem->data;
belle_sip_header_route_t *route;
belle_sip_uri_t *uri;
/*Optimization: if the initial route set only contains one URI which is the same as the request URI, ommit it*/
if (elem==list && list->next==NULL){
belle_sip_uri_t *requri=belle_sip_request_get_uri(request);
/*skip the first route it is the same as the request uri*/
if (strcmp(sal_address_get_domain(addr),belle_sip_uri_get_host(requri))==0 ){
ms_message("Skipping top route of initial route-set because same as request-uri.");
continue;
}
}
route=belle_sip_header_route_create((belle_sip_header_address_t*)addr);
uri=belle_sip_header_address_get_uri((belle_sip_header_address_t*)route);
belle_sip_uri_set_lr_param(uri,1);
belle_sip_message_add_header((belle_sip_message_t*)request,(belle_sip_header_t*)route);
}
}
