def send_connection_init(self, timeout: TimeoutDict) -> None:
"""
The HTTP/2 connection requires some initial setup before we can start
using individual request/response streams on it.
"""
# Need to set these manually here instead of manipulating via
# __setitem__() otherwise the H2Connection will emit SettingsUpdate
# frames in addition to sending the undesired defaults.
self._h2_state.local_settings = Settings(
client=True,
initial_values={
# Disable PUSH_PROMISE frames from the server since we don't do anything
# with them for now. Maybe when we support caching?
SettingCodes.ENABLE_PUSH:
0,
# These two are taken from h2 for safe defaults
SettingCodes.MAX_CONCURRENT_STREAMS:
100,
SettingCodes.MAX_HEADER_LIST_SIZE:
65536,
},
)
# Some websites (*cough* Yahoo *cough*) balk at this setting being
# present in the initial handshake since it's not defined in the original
# RFC despite the RFC mandating ignoring settings you don't know about.
del self._h2_state.local_settings[
h2.settings.SettingCodes.ENABLE_CONNECT_PROTOCOL]
logger.trace("initiate_connection=%r", self)
self._h2_state.initiate_connection()
self._h2_state.increment_flow_control_window(2**24)
data_to_send = self._h2_state.data_to_send()
self.socket.write(data_to_send, timeout)
def initiate_connection(self) -> None:
# Need to set these manually here instead of manipulating via
# __setitem__() otherwise the H2Connection will emit SettingsUpdate
# frames in addition to sending the undesired defaults.
self.h2_state.local_settings = Settings(
client=True,
initial_values={
# Disable PUSH_PROMISE frames from the server since we don't do anything
# with them for now. Maybe when we support caching?
SettingCodes.ENABLE_PUSH:
0,
# These two are taken from h2 for safe defaults
SettingCodes.MAX_CONCURRENT_STREAMS:
100,
SettingCodes.MAX_HEADER_LIST_SIZE:
65536,
},
)
# Some websites (*cough* Yahoo *cough*) balk at this setting being
# present in the initial handshake since it's not defined in the original
# RFC despite the RFC mandating ignoring settings you don't know about.
del self.h2_state.local_settings[
h2.settings.SettingCodes.ENABLE_CONNECT_PROTOCOL]
self.h2_state.initiate_connection()
data_to_send = self.h2_state.data_to_send()
self.stream.write_no_block(data_to_send)
self.initialized = True
