Threadsafe Function DetectorSentinel()
	variable sock_sics, ii
	string msg,temp
	
	sock_sics=sockitopenconnectionF("137.157.202.139",60003,10)
	
	if(sockitisitopen(sock_sics)==-1)
		print "ERROR couldn't open sentinel sockets"
	endif
	
	
	do
		//read the info on the socket
		temp = SOCKITPeek(sock_sics)
	    
	    //see what the message means
	    strswitch(temp)
	       case "close it":
    	       break           
	       break
           case "send a different message":
           		sockitsendmsgF(sock_SICS, "a message\n")  
           break    
           //send a message and get the result immediately.
           default:
                temp = sockitsendnrecvF(sock_SICS, "do something\n")
           break
	    endswitch
	    
		if(sockitisitopen(sock_sics)==-1)
			sock_sics=sockitopenconnectionF("137.157.202.139",60003,10)
			if(sock_sics==-1)
				print "ERROR sentinel socket closed"
				return 1
			endif
		endif
	  
	while(1)

	sockitcloseconnection(sock_SICS)
	return 0
End