{HEAD ~ The method} 11, wherein {TAIL ~ a connection} is opened if the server response time is slower than the predetermined range of times 
wherein
{ HEAD ~ The method } 11 , wherein { TAIL ~ a connection } is opened if the server response time is slower than the predetermined range of times
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH