def __init__(self, address='localhost', port=DEFAULT_PORT, user=None, password=None, http_handler=None, timeout=None):
     if isinstance(timeout, (int, long, float)):
         self._query_timeout = float(timeout)
     else:
         self._query_timeout = DEFAULT_TIMEOUT
     urlo = urlparse.urlparse(address)
     if urlo.scheme == '':
         base_url = 'http://' + address + ':' + str(port)
         self.url = base_url + '/transmission/rpc'
     else:
         if urlo.port:
             self.url = urlo.scheme + '://' + urlo.hostname + ':' + str(urlo.port) + urlo.path
         else:
             self.url = urlo.scheme + '://' + urlo.hostname + urlo.path
         logger.info('Using custom URL "' + self.url + '".')
         if urlo.username and urlo.password:
             user = urlo.username
             password = urlo.password
         elif urlo.username or urlo.password:
             logger.warning('Either user or password missing, not using authentication.')
     if http_handler == None:
         self.http_handler = DefaultHTTPHandler()
     else:
         if hasattr(http_handler, 'set_authentication') and hasattr(http_handler, 'request'):
             self.http_handler = http_handler
         else:
             raise ValueError('Invalid HTTP handler.')
     if user and password:
         self.http_handler.set_authentication(self.url, user, password)
     elif user or password:
         logger.warning('Either user or password missing, not using authentication.')
     self._sequence = 0
     self.session = Session()
     self.session_id = 0
     self.protocol_version = None
     self.get_session()
     self.torrent_get_arguments = get_arguments('torrent-get'
                                                , self.rpc_version)
 def _rpc_version_warning(self, version):
     if self.rpc_version < version:
         logger.warning('Using feature not supported by server. RPC version for server %d, feature introduced in %d.' % (self.rpc_version, version))