@kilianwww commented on this pull request.


In src/modules/ims_isc/ims_isc_mod.c:

> @@ -244,10 +244,17 @@ int isc_match_filter(struct sip_msg *msg, char *str1, udomain_t *d)
 	int free_s = 0;
 
 	//the callback from the Cx interface in case of unreg terminating initial message is a FAILURE_ROUTE. Hence we need an addl. flag
+	// meaning of firstflag:
+	//    firstflag == 0:
+	//       request route: request has been received from AS, old ISCMARK found in Route header field
+	//       failure route: request to AS has been rejected or timed out, old ISCMARK found in lumps

The firstflag variable is now replaced with an enum that describes the 4 states, this should clear things up a bit


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