def _get_permessage_deflate_framer(extension_response):
"""Validate the response and return a framer object using the parameters in
the response. This method doesn't accept the s2c_.* parameters.
"""
c2s_max_window_bits = None
c2s_no_context_takeover = None
c2s_max_window_bits_name = PerMessageDeflateExtensionProcessor._C2S_MAX_WINDOW_BITS_PARAM
c2s_no_context_takeover_name = PerMessageDeflateExtensionProcessor._C2S_NO_CONTEXT_TAKEOVER_PARAM
# We didn't send any s2c_.* parameter. Handle those parameters as invalid
# if found in the response.
for param_name, param_value in extension_response.get_parameters():
if param_name == c2s_max_window_bits_name:
if c2s_max_window_bits is not None:
raise ClientHandshakeError("Multiple %s found" % c2s_max_window_bits_name)
parsed_value = _parse_window_bits(param_value)
if parsed_value is None:
raise ClientHandshakeError("Bad %s: %r" % (c2s_max_window_bits_name, param_value))
c2s_max_window_bits = parsed_value
elif param_name == c2s_no_context_takeover_name:
if c2s_no_context_takeover is not None:
raise ClientHandshakeError("Multiple %s found" % c2s_no_context_takeover_name)
if param_value is not None:
raise ClientHandshakeError("Bad %s: Has value %r" % (c2s_no_context_takeover_name, param_value))
c2s_no_context_takeover = True
if c2s_no_context_takeover is None:
c2s_no_context_takeover = False
return _PerMessageDeflateFramer(c2s_max_window_bits, c2s_no_context_takeover)
def _get_permessage_deflate_framer(extension_response):
"""Validate the response and return a framer object using the parameters in
the response. This method doesn't accept the server_.* parameters.
"""
client_max_window_bits = None
client_no_context_takeover = None
client_max_window_bits_name = (
PerMessageDeflateExtensionProcessor.
_CLIENT_MAX_WINDOW_BITS_PARAM)
client_no_context_takeover_name = (
PerMessageDeflateExtensionProcessor.
_CLIENT_NO_CONTEXT_TAKEOVER_PARAM)
# We didn't send any server_.* parameter.
# Handle those parameters as invalid if found in the response.
for param_name, param_value in extension_response.get_parameters():
if param_name == client_max_window_bits_name:
if client_max_window_bits is not None:
raise ClientHandshakeError(
'Multiple %s found' % client_max_window_bits_name)
parsed_value = _parse_window_bits(param_value)
if parsed_value is None:
raise ClientHandshakeError(
'Bad %s: %r' %
(client_max_window_bits_name, param_value))
client_max_window_bits = parsed_value
elif param_name == client_no_context_takeover_name:
if client_no_context_takeover is not None:
raise ClientHandshakeError(
'Multiple %s found' % client_no_context_takeover_name)
if param_value is not None:
raise ClientHandshakeError(
'Bad %s: Has value %r' %
(client_no_context_takeover_name, param_value))
client_no_context_takeover = True
if client_no_context_takeover is None:
client_no_context_takeover = False
return _PerMessageDeflateFramer(client_max_window_bits,
client_no_context_takeover)