Example #1
0
int main(int argc, char *argv[])
{
	//mtrace();       // (pat) Enable memory leak detection.  Unfortunately, huge amounts of code have been started in the constructors above.
	gLogGroup.setAll();
	// TODO: Properly parse and handle any arguments
	if (argc > 1) {
		bool testflag = false;
		for (int argi = 1; argi < argc; argi++) {		// Skip argv[0] which is the program name.
			if (!strcmp(argv[argi], "--version") || !strcmp(argv[argi], "-v")) {
				// Print the version number and exit immediately.
				cout << gVersionString << endl;
				return 0;
			}
			if (!strcmp(argv[argi], "--test")) {
				testflag = true;
				continue;
			}
			if (!strcmp(argv[argi], "--gensql")) {
				cout << gConfig.getDefaultSQL(string(argv[0]), gVersionString) << endl;
				return 0;
			}
			if (!strcmp(argv[argi], "--gentex")) {
				cout << gConfig.getTeX(string(argv[0]), gVersionString) << endl;
				return 0;
			}

			// (pat) Adding support for specified sql file.
			// Unfortunately, the Config table was inited quite some time ago,
			// so stick this arg in the environment, whence the ConfigurationTable can find it, and then reboot.
			if (!strcmp(argv[argi],"--config")) {
				if (++argi == argc) {
					LOG(ALERT) <<"Missing argument to --config option";
					exit(2);
				}
				setenv(cOpenBTSConfigEnv,argv[argi],1);
				execl(argv[0],"OpenBTS",NULL);
				LOG(ALERT) <<"execl failed?  Exiting...";
				exit(0);
			}
			if (!strcmp(argv[argi],"--help")) {
				printf("OpenBTS [--version --gensql --gentex] [--config file.db]\n");
				printf("OpenBTS exiting...\n");
				exit(0);
			}

			printf("OpenBTS: unrecognized argument: %s\nexiting...\n",argv[argi]);
		}

		if (testflag) { GSM::TestTCHL1FEC(); return 0; }
	}

	createStats();

	gConfig.setCrossCheckHook(&configurationCrossCheck);

	gReports.incr("OpenBTS.Starts");

	gNeighborTable.NeighborTableInit(
		gConfig.getStr("Peering.NeighborTable.Path").c_str());

	int sock = socket(AF_UNIX,SOCK_DGRAM,0);
	if (sock<0) {
		perror("creating CLI datagram socket");
		LOG(ALERT) << "cannot create socket for CLI";
		gReports.incr("OpenBTS.Exit.CLI.Socket");
		exit(1);
	}

	try {

	srandom(time(NULL));

	gConfig.setUpdateHook(purgeConfig);
	LOG(ALERT) << "OpenBTS (re)starting, ver " << VERSION << " build date " << __DATE__;
	LOG(ALERT) << "OpenBTS reading config file "<<cOpenBTSConfigFile;

	COUT("\n\n" << gOpenBTSWelcome << "\n");
	Control::controlInit();		// init Layer3: TMSITable, TransactionTable.
	gPhysStatus.open(gConfig.getStr("Control.Reporting.PhysStatusTable").c_str());
	gBTS.init();
	gParser.addCommands();

	COUT("\nStarting the system...");

	// is the radio running?
	// Start the transceiver interface.
	LOG(INFO) << "checking transceiver";
	//gTRX.ARFCN(0)->powerOn();
	//sleep(gConfig.getNum("TRX.Timeout.Start"));
	//bool haveTRX = gTRX.ARFCN(0)->powerOn(false);		This prints an inapplicable warning message.
	bool haveTRX = gTRX.ARFCN(0)->trxRunning();			// This does not print an inapplicable warning message.

	Thread transceiverThread;
	if (!haveTRX) {
		LOG(ALERT) << "starting the transceiver";
		transceiverThread.start((void*(*)(void*)) startTransceiver, NULL);
		// sleep to let the FPGA code load
		// TODO: we should be "pinging" the radio instead of sleeping
		sleep(5);
	} else {
		LOG(NOTICE) << "transceiver already running";
	}

	// Start the SIP interface.
	SIP::SIPInterfaceStart();

	// Start the peer interface
	gPeerInterface.start();

	// Sync factory calibration as defaults from radio EEPROM
	signed sdrsn = gTRX.ARFCN(0)->getFactoryCalibration("sdrsn");
	if (sdrsn != 0 && sdrsn != 65535) {
		signed val;

		val = gTRX.ARFCN(0)->getFactoryCalibration("band");
		if (gConfig.isValidValue("GSM.Radio.Band", val)) {
			gConfig.mSchema["GSM.Radio.Band"].updateDefaultValue(val);
		}

		val = gTRX.ARFCN(0)->getFactoryCalibration("freq");
		if (gConfig.isValidValue("TRX.RadioFrequencyOffset", val)) {
			gConfig.mSchema["TRX.RadioFrequencyOffset"].updateDefaultValue(val);
		}

		val = gTRX.ARFCN(0)->getFactoryCalibration("rxgain");
		if (gConfig.isValidValue("GSM.Radio.RxGain", val)) {
			gConfig.mSchema["GSM.Radio.RxGain"].updateDefaultValue(val);
		}

		val = gTRX.ARFCN(0)->getFactoryCalibration("txgain");
		if (gConfig.isValidValue("TRX.TxAttenOffset", val)) {
			gConfig.mSchema["TRX.TxAttenOffset"].updateDefaultValue(val);
		}
	}

	// Limit valid ARFCNs to current band
	gConfig.mSchema["GSM.Radio.C0"].updateValidValues(getARFCNsString(gConfig.getNum("GSM.Radio.Band")));

	//
	// Configure the radio.
	//

	gTRX.start();

	// Set up the interface to the radio.
	// Get a handle to the C0 transceiver interface.
	ARFCNManager* C0radio = gTRX.ARFCN(0);

	// Tuning.
	// Make sure its off for tuning.
	//C0radio->powerOff();
	// Get the ARFCN list.
	unsigned C0 = gConfig.getNum("GSM.Radio.C0");
	unsigned numARFCNs = gConfig.getNum("GSM.Radio.ARFCNs");
	for (unsigned i=0; i<numARFCNs; i++) {
		// Tune the radios.
		unsigned ARFCN = C0 + i*2;
		LOG(INFO) << "tuning TRX " << i << " to ARFCN " << ARFCN;
		ARFCNManager* radio = gTRX.ARFCN(i);
		radio->tune(ARFCN);
	}

	// Send either TSC or full BSIC depending on radio need
	if (gConfig.getBool("GSM.Radio.NeedBSIC")) {
		// Send BSIC to 
		C0radio->setBSIC(gBTS.BSIC());
	} else {
		// Set TSC same as BCC everywhere.
		C0radio->setTSC(gBTS.BCC());
	}

	// Set maximum expected delay spread.
	C0radio->setMaxDelay(gConfig.getNum("GSM.Radio.MaxExpectedDelaySpread"));

	// Set Receiver Gain
	C0radio->setRxGain(gConfig.getNum("GSM.Radio.RxGain"));

	// Turn on and power up.
	C0radio->powerOn(true);
	C0radio->setPower(gConfig.getNum("GSM.Radio.PowerManager.MinAttenDB"));

	//
	// Create a C-V channel set on C0T0.
	//

	// C-V on C0T0
	C0radio->setSlot(0,5);
	// SCH
	SCHL1FEC SCH;
	SCH.downstream(C0radio);
	SCH.open();
	// FCCH
	FCCHL1FEC FCCH;
	FCCH.downstream(C0radio);
	FCCH.open();
	// BCCH
	BCCHL1FEC BCCH;
	BCCH.downstream(C0radio);
	BCCH.open();
	// RACH
	RACHL1FEC RACH(gRACHC5Mapping);
	RACH.downstream(C0radio);
	RACH.open();
	// CCCHs
	CCCHLogicalChannel CCCH0(gCCCH_0Mapping);
	CCCH0.downstream(C0radio);
	CCCH0.open();
	CCCHLogicalChannel CCCH1(gCCCH_1Mapping);
	CCCH1.downstream(C0radio);
	CCCH1.open();
	CCCHLogicalChannel CCCH2(gCCCH_2Mapping);
	CCCH2.downstream(C0radio);
	CCCH2.open();
	// use CCCHs as AGCHs
	gBTS.addAGCH(&CCCH0);
	gBTS.addAGCH(&CCCH1);
	gBTS.addAGCH(&CCCH2);

	// C-V C0T0 SDCCHs
	// (pat) I thought config 'GSM.CCCH.CCCH-CONF' was supposed to control the number of SDCCH allocated?
	SDCCHLogicalChannel C0T0SDCCH[4] = {
		SDCCHLogicalChannel(0,0,gSDCCH_4_0),
		SDCCHLogicalChannel(0,0,gSDCCH_4_1),
		SDCCHLogicalChannel(0,0,gSDCCH_4_2),
		SDCCHLogicalChannel(0,0,gSDCCH_4_3),
	};
	Thread C0T0SDCCHControlThread[4];
	// Subchannel 2 used for CBCH if SMSCB enabled.
	bool SMSCB = (gConfig.getStr("Control.SMSCB.Table").length() != 0);
	CBCHLogicalChannel CBCH(gSDCCH_4_2);
	Thread CBCHControlThread;
	for (int i=0; i<4; i++) {
		if (SMSCB && (i==2)) continue;
		C0T0SDCCH[i].downstream(C0radio);
		C0T0SDCCHControlThread[i].start((void*(*)(void*))Control::DCCHDispatcher,&C0T0SDCCH[i]);
		C0T0SDCCH[i].open();
		gBTS.addSDCCH(&C0T0SDCCH[i]);
	}
	// Install CBCH if used.
	if (SMSCB) {
		LOG(INFO) << "creating CBCH for SMSCB";
		CBCH.downstream(C0radio);
		CBCH.open();
		gBTS.addCBCH(&CBCH);
		CBCHControlThread.start((void*(*)(void*))Control::SMSCBSender,NULL);
	}


	//
	// Configure the other slots.
	//

	// Count configured slots.
	unsigned sCount = 1;


	if (!gConfig.defines("GSM.Channels.NumC1s")) {
		int numChan = numARFCNs*7;
		LOG(CRIT) << "GSM.Channels.NumC1s not defined. Defaulting to " << numChan << ".";
		gConfig.set("GSM.Channels.NumC1s",numChan);
	}
	if (!gConfig.defines("GSM.Channels.NumC7s")) {
		int numChan = numARFCNs-1;
		LOG(CRIT) << "GSM.Channels.NumC7s not defined. Defaulting to " << numChan << ".";
		gConfig.set("GSM.Channels.NumC7s",numChan);
	}

	// sanity check on channel counts
	// the clamp here could be improved to take the customer's current ratio of C1:C7 and scale it back to fit in the window
	if (((numARFCNs * 8) - 1) < (gConfig.getNum("GSM.Channels.NumC1s") + gConfig.getNum("GSM.Channels.NumC7s"))) {
		LOG(CRIT) << "scaling back GSM.Channels.NumC1s and GSM.Channels.NumC7s to fit inside number of available timeslots";
		gConfig.set("GSM.Channels.NumC1s",numARFCNs*7);
		gConfig.set("GSM.Channels.NumC7s",numARFCNs-1);
	}

	if (gConfig.getBool("GSM.Channels.C1sFirst")) {
		// Create C-I slots.
		for (int i=0; i<gConfig.getNum("GSM.Channels.NumC1s"); i++) {
			gBTS.createCombinationI(gTRX,sCount/8,sCount%8);
			sCount++;
		}
	}

	// Create C-VII slots.
	for (int i=0; i<gConfig.getNum("GSM.Channels.NumC7s"); i++) {
		gBTS.createCombinationVII(gTRX,sCount/8,sCount%8);
		sCount++;
	}

	if (!gConfig.getBool("GSM.Channels.C1sFirst")) {
		// Create C-I slots.
		for (int i=0; i<gConfig.getNum("GSM.Channels.NumC1s"); i++) {
			gBTS.createCombinationI(gTRX,sCount/8,sCount%8);
			sCount++;
		}
	}

	if (sCount<(numARFCNs*8)) {
		LOG(CRIT) << "Only " << sCount << " timeslots configured in an " << numARFCNs << "-ARFCN system.";
	}

	// Set up idle filling on C0 as needed for unconfigured slots..
	while (sCount<8) {
		gBTS.createCombination0(gTRX,sCount);
		sCount++;
	}

	/* (pat) See GSM 05.02 6.5.2 and 3.3.2.3
		Note: The number of different paging subchannels on       
		the CCCH is:                                        
                                                           
		MAX(1,(3 - BS-AG-BLKS-RES)) * BS-PA-MFRMS           
			if CCCH-CONF = "001"                        
		(9 - BS-AG-BLKS-RES) * BS-PA-MFRMS                  
			for other values of CCCH-CONF               
	*/

	// Set up the pager.
	// Set up paging channels.
	// HACK -- For now, use a single paging channel, since paging groups are broken.
	gBTS.addPCH(&CCCH2);

	// Be sure we are not over-reserving.
	if (gConfig.getNum("GSM.Channels.SDCCHReserve")>=(int)gBTS.SDCCHTotal()) {
		unsigned val = gBTS.SDCCHTotal() - 1;
		LOG(CRIT) << "GSM.Channels.SDCCHReserve too big, changing to " << val;
		gConfig.set("GSM.Channels.SDCCHReserve",val);
	}


	// OK, now it is safe to start the BTS.
	gBTS.start();


	struct sockaddr_un cmdSockName;
	cmdSockName.sun_family = AF_UNIX;
	const char* sockpath = gConfig.getStr("CLI.SocketPath").c_str();
	char rmcmd[strlen(sockpath)+5];
	sprintf(rmcmd,"rm -f %s",sockpath);
	if (system(rmcmd)) {}	// The 'if' shuts up gcc warnings.
	strcpy(cmdSockName.sun_path,sockpath);
	LOG(INFO) "binding CLI datagram socket at " << sockpath;
	if (bind(sock, (struct sockaddr *) &cmdSockName, sizeof(struct sockaddr_un))) {
		perror("binding name to cmd datagram socket");
		LOG(ALERT) << "cannot bind socket for CLI at " << sockpath;
		gReports.incr("OpenBTS.Exit.CLI.Socket");
		exit(1);
	}
	COUT("\nsystem ready\n");
	if (chmod(sockpath, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) < 0)
	{
		perror("sockpath");
		// don't exit, at this point, we must run CLI as root
		COUT("\nuse the OpenBTSCLI utility to access CLI as root\n");
	} else
	{
		COUT("\nuse the OpenBTSCLI utility to access CLI\n");
	}
	LOG(INFO) << "system ready";

	gParser.startCommandLine();

	while (1) {
		char cmdbuf[1000];
		struct sockaddr_un source;
		socklen_t sourceSize = sizeof(source);
		int nread = recvfrom(sock,cmdbuf,sizeof(cmdbuf)-1,0,(struct sockaddr*)&source,&sourceSize);
		gReports.incr("OpenBTS.CLI.Command");
		cmdbuf[nread]='\0';
		LOG(INFO) << "received command \"" << cmdbuf << "\" from " << source.sun_path;
		std::ostringstream sout;
		int res = gParser.process(cmdbuf,sout);
		const std::string rspString= sout.str();
		const char* rsp = rspString.c_str();
		LOG(INFO) << "sending " << strlen(rsp) << "-char result to " << source.sun_path;
		if (sendto(sock,rsp,strlen(rsp)+1,0,(struct sockaddr*)&source,sourceSize)<0) {
			LOG(ERR) << "can't send CLI response to " << source.sun_path;
			gReports.incr("OpenBTS.CLI.Command.ResponseFailure");
		}
		// res<0 means to exit the application
		if (res<0) break;
	}

	} // try

	catch (ConfigurationTableKeyNotFound e) {
		LOG(EMERG) << "required configuration parameter " << e.key() << " not defined, aborting";
		gReports.incr("OpenBTS.Exit.Error.ConfigurationParamterNotFound");
	}
	LOG(ALERT) << "exiting OpenBTS as directed by command line...";


	//if (gTransceiverPid) kill(gTransceiverPid, SIGKILL);
	close(sock);

}
Example #2
0
int main(int argc, char *argv[])
{
	// TODO: Properly parse and handle any arguments
	if (argc > 1) {
		for (int argi = 0; argi < argc; argi++) {
			if (!strcmp(argv[argi], "--version") ||
			    !strcmp(argv[argi], "-v")) {
				cout << gVersionString << endl;
			}
		}

		return 0;
	}

	createStats();
 
	gReports.incr("OpenBTS.Starts");

	int sock = socket(AF_UNIX,SOCK_DGRAM,0);
	if (sock<0) {
		perror("creating CLI datagram socket");
		LOG(ALERT) << "cannot create socket for CLI";
		gReports.incr("OpenBTS.Exit.CLI.Socket");
		exit(1);
	}

	try {

	srandom(time(NULL));

	gConfig.setUpdateHook(purgeConfig);
	gLogInit("openbts",gConfig.getStr("Log.Level").c_str());
	LOG(ALERT) << "OpenBTS starting, ver " << VERSION << " build date " << __DATE__;

	COUT("\n\n" << gOpenBTSWelcome << "\n");
	gTMSITable.open(gConfig.getStr("Control.Reporting.TMSITable").c_str());
	gTransactionTable.init(gConfig.getStr("Control.Reporting.TransactionTable").c_str());
	gPhysStatus.open(gConfig.getStr("Control.Reporting.PhysStatusTable").c_str());
	gBTS.init();
	gSubscriberRegistry.init();
	gParser.addCommands();

	COUT("\nStarting the system...");

	// is the radio running?
	// Start the transceiver interface.
	LOG(INFO) << "checking transceiver";
	//gTRX.ARFCN(0)->powerOn();
	//sleep(gConfig.getNum("TRX.Timeout.Start",2));
	bool haveTRX = gTRX.ARFCN(0)->powerOn(false);

	Thread transceiverThread;
	if (!haveTRX) {
		transceiverThread.start((void*(*)(void*)) startTransceiver, NULL);
		// sleep to let the FPGA code load
		// TODO: we should be "pinging" the radio instead of sleeping
		sleep(5);
	} else {
		LOG(NOTICE) << "transceiver already running";
	}

	// Start the SIP interface.
	gSIPInterface.start();


	//
	// Configure the radio.
	//

	gTRX.start();

	// Set up the interface to the radio.
	// Get a handle to the C0 transceiver interface.
	ARFCNManager* C0radio = gTRX.ARFCN(0);

	// Tuning.
	// Make sure its off for tuning.
	//C0radio->powerOff();
	// Get the ARFCN list.
	unsigned C0 = gConfig.getNum("GSM.Radio.C0");
	unsigned numARFCNs = gConfig.getNum("GSM.Radio.ARFCNs");
	for (unsigned i=0; i<numARFCNs; i++) {
		// Tune the radios.
		unsigned ARFCN = C0 + i*2;
		LOG(INFO) << "tuning TRX " << i << " to ARFCN " << ARFCN;
		ARFCNManager* radio = gTRX.ARFCN(i);
		radio->tune(ARFCN);
	}

	// Send either TSC or full BSIC depending on radio need
	if (gConfig.getBool("GSM.Radio.NeedBSIC")) {
		// Send BSIC to 
		C0radio->setBSIC(gBTS.BSIC());
	} else {
		// Set TSC same as BCC everywhere.
		C0radio->setTSC(gBTS.BCC());
	}

	// Set maximum expected delay spread.
	C0radio->setMaxDelay(gConfig.getNum("GSM.Radio.MaxExpectedDelaySpread"));

	// Set Receiver Gain
	C0radio->setRxGain(gConfig.getNum("GSM.Radio.RxGain"));

	// Turn on and power up.
	C0radio->powerOn(true);
	C0radio->setPower(gConfig.getNum("GSM.Radio.PowerManager.MinAttenDB"));

	//
	// Create a C-V channel set on C0T0.
	//

	// C-V on C0T0
	C0radio->setSlot(0,5);
	// SCH
	SCHL1FEC SCH;
	SCH.downstream(C0radio);
	SCH.open();
	// FCCH
	FCCHL1FEC FCCH;
	FCCH.downstream(C0radio);
	FCCH.open();
	// BCCH
	BCCHL1FEC BCCH;
	BCCH.downstream(C0radio);
	BCCH.open();
	// RACH
	RACHL1FEC RACH(gRACHC5Mapping);
	RACH.downstream(C0radio);
	RACH.open();
	// CCCHs
	CCCHLogicalChannel CCCH0(gCCCH_0Mapping);
	CCCH0.downstream(C0radio);
	CCCH0.open();
	CCCHLogicalChannel CCCH1(gCCCH_1Mapping);
	CCCH1.downstream(C0radio);
	CCCH1.open();
	CCCHLogicalChannel CCCH2(gCCCH_2Mapping);
	CCCH2.downstream(C0radio);
	CCCH2.open();
	// use CCCHs as AGCHs
	gBTS.addAGCH(&CCCH0);
	gBTS.addAGCH(&CCCH1);
	gBTS.addAGCH(&CCCH2);

	// C-V C0T0 SDCCHs
	SDCCHLogicalChannel C0T0SDCCH[4] = {
		SDCCHLogicalChannel(0,0,gSDCCH_4_0),
		SDCCHLogicalChannel(0,0,gSDCCH_4_1),
		SDCCHLogicalChannel(0,0,gSDCCH_4_2),
		SDCCHLogicalChannel(0,0,gSDCCH_4_3),
	};
	Thread C0T0SDCCHControlThread[4];
	for (int i=0; i<4; i++) {
		C0T0SDCCH[i].downstream(C0radio);
		C0T0SDCCHControlThread[i].start((void*(*)(void*))Control::DCCHDispatcher,&C0T0SDCCH[i]);
		C0T0SDCCH[i].open();
		gBTS.addSDCCH(&C0T0SDCCH[i]);
	}


	//
	// Configure the other slots.
	//

	// Count configured slots.
	unsigned sCount = 1;

	if (gConfig.defines("GSM.Channels.C1sFirst")) {
		// Create C-I slots.
		for (int i=0; i<gConfig.getNum("GSM.Channels.NumC1s"); i++) {
			gBTS.createCombinationI(gTRX,sCount/8,sCount%8);
			sCount++;
		}
	}

	// Create C-VII slots.
	for (int i=0; i<gConfig.getNum("GSM.Channels.NumC7s"); i++) {
		gBTS.createCombinationVII(gTRX,sCount/8,sCount%8);
		sCount++;
	}

	if (!gConfig.defines("GSM.Channels.C1sFirst")) {
		// Create C-I slots.
		for (int i=0; i<gConfig.getNum("GSM.Channels.NumC1s"); i++) {
			gBTS.createCombinationI(gTRX,sCount/8,sCount%8);
			sCount++;
		}
	}


	// Set up idle filling on C0 as needed.
	while (sCount<8) {
		gBTS.createCombination0(gTRX,sCount);
		sCount++;
	}

	/*
		Note: The number of different paging subchannels on       
		the CCCH is:                                        
                                                           
		MAX(1,(3 - BS-AG-BLKS-RES)) * BS-PA-MFRMS           
			if CCCH-CONF = "001"                        
		(9 - BS-AG-BLKS-RES) * BS-PA-MFRMS                  
			for other values of CCCH-CONF               
	*/

	// Set up the pager.
	// Set up paging channels.
	// HACK -- For now, use a single paging channel, since paging groups are broken.
	gBTS.addPCH(&CCCH2);

	// Be sure we are not over-reserving.
	if (gConfig.getNum("GSM.Channels.SDCCHReserve")>=(int)gBTS.SDCCHTotal()) {
		unsigned val = gBTS.SDCCHTotal() - 1;
		LOG(CRIT) << "GSM.Channels.SDCCHReserve too big, changing to " << val;
		gConfig.set("GSM.Channels.SDCCHReserve",val);
	}


	// OK, now it is safe to start the BTS.
	gBTS.start();


	cout << "\nsystem ready\n";
	cout << "\nuse the OpenBTSCLI utility to access CLI\n";
	LOG(INFO) << "system ready";

	struct sockaddr_un cmdSockName;
	cmdSockName.sun_family = AF_UNIX;
	const char* sockpath = gConfig.getStr("CLI.SocketPath").c_str();
	char rmcmd[strlen(sockpath)+5];
	sprintf(rmcmd,"rm %s",sockpath);
	system(rmcmd);
	strcpy(cmdSockName.sun_path,sockpath);
	if (bind(sock, (struct sockaddr *) &cmdSockName, sizeof(struct sockaddr_un))) {
		perror("binding name to cmd datagram socket");
		LOG(ALERT) << "cannot bind socket for CLI at " << sockpath;
		gReports.incr("OpenBTS.Exit.CLI.Socket");
		exit(1);
	}

	while (1) {
		char cmdbuf[1000];
		struct sockaddr_un source;
		socklen_t sourceSize = sizeof(source);
		int nread = recvfrom(sock,cmdbuf,sizeof(cmdbuf)-1,0,(struct sockaddr*)&source,&sourceSize);
		gReports.incr("OpenBTS.CLI.Command");
		cmdbuf[nread]='\0';
		LOG(INFO) << "received command \"" << cmdbuf << "\" from " << source.sun_path;
		std::ostringstream sout;
		int res = gParser.process(cmdbuf,sout);
		const std::string rspString= sout.str();
		const char* rsp = rspString.c_str();
		LOG(INFO) << "sending " << strlen(rsp) << "-char result to " << source.sun_path;
		if (sendto(sock,rsp,strlen(rsp)+1,0,(struct sockaddr*)&source,sourceSize)<0) {
			LOG(ERR) << "can't send CLI response to " << source.sun_path;
			gReports.incr("OpenBTS.CLI.Command.ResponseFailure");
		}
		// res<0 means to exit the application
		if (res<0) break;
		gReports.incr("OpenBTS.Exit.Normal.CLI");
	}

	} // try

	catch (ConfigurationTableKeyNotFound e) {
		LOG(EMERG) << "required configuration parameter " << e.key() << " not defined, aborting";
		gReports.incr("OpenBTS.Exit.Error.ConfigurationParamterNotFound");
	}

	//if (gTransceiverPid) kill(gTransceiverPid, SIGKILL);
	close(sock);

}