def _write_frame(self, fin, opcode, data):
if fin:
finbit = 0x80
else:
finbit = 0
frame = struct.pack("B", finbit | opcode)
l = len(data)
if self.mask_outgoing:
mask_bit = 0x80
else:
mask_bit = 0
if l < 126:
frame += struct.pack("B", l | mask_bit)
elif l <= 0xFFFF:
frame += struct.pack("!BH", 126 | mask_bit, l)
else:
frame += struct.pack("!BQ", 127 | mask_bit, l)
if self.mask_outgoing:
mask = os.urandom(4)
data = mask + _websocket_mask(mask, data)
frame += data
self.stream.write(frame)
def _on_masked_frame_data(self, data):
self._on_frame_data(_websocket_mask(self._frame_mask, data))
