Proxy helper function to discover call side record route uri

src/provider.c

@@ -445,15 +445,15 @@ belle_sip_provider_t *belle_sip_provider_new(belle_sip_stack_t *s, belle_sip_lis
 	if (lp) belle_sip_provider_add_listening_point(p,lp);
 	return p;
 }
-#if 0
-/* what is the purpose of this function incorrectly named ?*/
+
+/* This function is used by a proxy to set its call side record route.
+ * It must be called before adding any VIA header to the message. */
 belle_sip_uri_t *belles_sip_provider_find_our_origin(belle_sip_provider_t *p, belle_sip_request_t *req) {
 	belle_sip_uri_t* origin = belle_sip_request_extract_origin(req);
 	belle_sip_hop_t *hop = belle_sip_hop_new_from_uri(origin);
 	belle_sip_channel_t *inChan = belle_sip_provider_get_channel(p, hop);
 	return compute_our_external_uri_from_channel(inChan);
 }
-#endif
 
 static belle_sip_channel_t* _belle_sip_provider_find_channel_with_us(belle_sip_provider_t *p, belle_sip_uri_t* uri) {
 	const char *transport;