import socket;

url = camtool.getInstance(camtool.getInstances()[0])["stream"]

srv = url[6:url.rfind(":")]
port = int(url[url.rfind(":")+1:])

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
result = sock.connect_ex((srv,port))

if result == 0:
   print "Port is open"
elif result == 106:
   print "Port is connected"
elif result == 111:
   print "Port is not open"
elif result == 111:
   print "Error " + result
sock.close()