def __setitem__(self, key, value):
invalid = _validate_setting(key, value)
if invalid:
raise InvalidSettingsValueError("Setting %d has invalid value %d" %
(key, value),
error_code=invalid)
try:
items = self._settings[key]
except KeyError:
items = collections.deque([None])
self._settings[key] = items
items.append(value)
def __init__(self, client=True, initial_values=None):
# Backing object for the settings. This is a dictionary of
# (setting: [list of values]), where the first value in the list is the
# current value of the setting. Strictly this doesn't use lists but
# instead uses collections.deque to avoid repeated memory allocations.
#
# This contains the default values for HTTP/2.
self._settings = {
HEADER_TABLE_SIZE: collections.deque([4096]),
ENABLE_PUSH: collections.deque([int(client)]),
INITIAL_WINDOW_SIZE: collections.deque([65535]),
MAX_FRAME_SIZE: collections.deque([16384]),
}
if initial_values is not None:
for key, value in initial_values.items():
invalid = _validate_setting(key, value)
if invalid:
raise InvalidSettingsValueError(
"Setting %d has invalid value %d" % (key, value),
error_code=invalid)
self._settings[key] = collections.deque([value])
