ipfixReceiver = rcvIpfixUdpIpv4(port);
if(!(ipfixReceiver = rcvIpfixUdpIpv4(port))) { fatal("Cannot start rcvIpfixUdpIpv4"); return 1; }
void startCollector(uint16_t port) {	if (!ipfixSender) {		fatal("Exporter not started");		return;		}	if (!rules) {		fatal("Aggregator not started");		return;		}	if (ipfixReceiver) {		fatal("Collector already started");		return;		}	debug("initializing collector");	initializeRcvIpfix();				debug("starting collector");	ipfixReceiver = rcvIpfixUdpIpv4(port);	setDataRecordCallback(ipfixReceiver, processDataRecord);	setDataDataRecordCallback(ipfixReceiver, processDataDataRecord);	startRcvIpfix(ipfixReceiver);	}