def socket_handler(listener):
sock = listener.accept()[0]
# Dispose of the first two packets.
sock.recv(65535)
sock.recv(65535)
# Send a Settings frame that reduces the flow-control window to
# 64 bytes.
f = SettingsFrame(0)
f.settings[SettingsFrame.INITIAL_WINDOW_SIZE] = 64
sock.send(f.serialize())
# Grab three frames, the settings ACK, the initial headers frame,
# and the first data frame.
for x in range(0, 3):
data.append(sock.recv(65535))
# Send a WindowUpdate giving more window room to the stream.
f = WindowUpdateFrame(1)
f.window_increment = 64
sock.send(f.serialize())
# Reeive the remaining frame.
data.append(sock.recv(65535))
send_event.set()
# We're done.
sock.close()
def socket_handler(listener):
sock = listener.accept()[0]
# Dispose of the first two packets.
sock.recv(65535)
sock.recv(65535)
# Send a Settings frame that reduces the flow-control window to
# 64 bytes.
f = SettingsFrame(0)
f.settings[SettingsFrame.INITIAL_WINDOW_SIZE] = 64
sock.send(f.serialize())
# Grab three frames, the settings ACK, the initial headers frame,
# and the first data frame.
for x in range(0, 3):
data.append(sock.recv(65535))
# Send a WindowUpdate giving more window room to the stream.
f = WindowUpdateFrame(1)
f.window_increment = 64
sock.send(f.serialize())
# Send one that gives more room to the connection.
f = WindowUpdateFrame(0)
f.window_increment = 64
sock.send(f.serialize())
# Reeive the remaining frame.
data.append(sock.recv(65535))
send_event.set()
# We're done.
sock.close()
def socket_handler(listener):
sock = listener.accept()[0]
# We should get two packets: one connection header string, one
# SettingsFrame.
first = sock.recv(65535)
second = sock.recv(65535)
data.append(first)
data.append(second)
# We need to send back a SettingsFrame.
f = SettingsFrame(0)
sock.send(f.serialize())
send_event.set()
sock.close()
def receive_preamble(sock):
# Receive the HTTP/2.0 'preamble'.
sock.recv(65535)
sock.recv(65535)
sock.send(SettingsFrame(0).serialize())
sock.recv(65535)
return
def socket_handler(listener):
sock = listener.accept()[0]
# We should get two packets: one connection header string, one
# SettingsFrame.
first = sock.recv(65535)
second = sock.recv(65535)
data.append(first)
data.append(second)
# We need to send back a SettingsFrame.
f = SettingsFrame(0)
sock.send(f.serialize())
send_event.set()
sock.close()
def socket_handler(listener):
sock = listener.accept()[0]
# Do the handshake: conn header, settings, send settings, recv ack.
sock.recv(65535)
sock.recv(65535)
sock.send(SettingsFrame(0).serialize())
sock.recv(65535)
# Now expect some data. One headers frame and one data frame.
data.append(sock.recv(65535))
data.append(sock.recv(65535))
# Respond!
h = HeadersFrame(1)
h.data = self.get_encoder().encode({':status': 200, 'Content-Type': 'not/real', 'Content-Length': 20})
h.flags.add('END_HEADERS')
sock.send(h.serialize())
d = DataFrame(1)
d.data = b'1234567890' * 2
d.flags.add('END_STREAM')
sock.send(d.serialize())
send_event.set()
sock.close()
def test_settings_frame_serializes_properly(self):
f = SettingsFrame(0)
f.parse_flags(0xFF)
f.settings = {
SettingsFrame.HEADER_TABLE_SIZE: 4096,
SettingsFrame.ENABLE_PUSH: 0,
SettingsFrame.MAX_CONCURRENT_STREAMS: 100,
SettingsFrame.INITIAL_WINDOW_SIZE: 65535,
SettingsFrame.FLOW_CONTROL_OPTIONS: 1,
}
s = f.serialize()
assert s == (
b'\x00\x28\x04\x01\x00\x00\x00\x00' + # Frame header
b'\x00\x00\x00\x01\x00\x00\x10\x00' + # HEADER_TABLE_SIZE
b'\x00\x00\x00\x02\x00\x00\x00\x00' + # ENABLE_PUSH
b'\x00\x00\x00\x04\x00\x00\x00\x64' + # MAX_CONCURRENT_STREAMS
b'\x00\x00\x00\x0A\x00\x00\x00\x01' + # FLOW_CONTROL_OPTIONS
b'\x00\x00\x00\x07\x00\x00\xFF\xFF' # INITIAL_WINDOW_SIZE
)
def test_connections_handle_resizing_header_tables_properly(self):
sock = DummySocket()
f = SettingsFrame(0)
f.settings[SettingsFrame.HEADER_TABLE_SIZE] = 1024
c = HTTP20Connection('www.google.com')
c._sock = sock
# 'Receive' the SETTINGS frame.
c.receive_frame(f)
# Confirm that the setting is stored and the header table shrunk.
assert c._settings[SettingsFrame.HEADER_TABLE_SIZE] == 1024
assert c.encoder.header_table_size == 1024
# Confirm we got a SETTINGS ACK.
f2 = decode_frame(sock.queue[0])
assert isinstance(f2, SettingsFrame)
assert f2.stream_id == 0
assert f2.flags == set(['ACK'])
def test_settings_frame_serializes_properly(self):
f = SettingsFrame(0)
f.parse_flags(0xFF)
f.settings = {
SettingsFrame.HEADER_TABLE_SIZE: 4096,
SettingsFrame.ENABLE_PUSH: 0,
SettingsFrame.MAX_CONCURRENT_STREAMS: 100,
SettingsFrame.INITIAL_WINDOW_SIZE: 65535,
SettingsFrame.FLOW_CONTROL_OPTIONS: 1,
}
s = f.serialize()
assert s == (
b'\x00\x28\x04\x01\x00\x00\x00\x00' + # Frame header
b'\x00\x00\x00\x01\x00\x00\x10\x00' + # HEADER_TABLE_SIZE
b'\x00\x00\x00\x02\x00\x00\x00\x00' + # ENABLE_PUSH
b'\x00\x00\x00\x04\x00\x00\x00\x64' + # MAX_CONCURRENT_STREAMS
b'\x00\x00\x00\x0A\x00\x00\x00\x01' + # FLOW_CONTROL_OPTIONS
b'\x00\x00\x00\x07\x00\x00\xFF\xFF' # INITIAL_WINDOW_SIZE
)
def test_settings_frame_has_only_one_flag(self):
f = SettingsFrame(0)
flags = f.parse_flags(0xFF)
assert flags == set(['ACK'])
def test_settings_frame_has_only_one_flag(self):
f = SettingsFrame(0)
flags = f.parse_flags(0xFF)
assert flags == set(['ACK'])
def test_settings_frames_never_have_streams(self):
with pytest.raises(ValueError):
SettingsFrame(1)