docs: def fromString(self, inStr):
          """
          Convert the given bytes into a C{(host, port)} tuple.
  
          @param inStr: bytes in the format C{host:port}
          @type inStr: L{bytes}
  
          @return: a C{(host, port)} tuple
          @rtype: 2-L{tuple} of L{bytes}, L{int}
          """
          host, sPort = inStr.split(":")
          return (host, int(sPort))