def _parse_packet(self, packet_bytes):
'''
Parse a raw udp packet and return a list of parsed messages.
'''
byte_buffer = ByteBuffer(packet_bytes)
parsed_messages = []
while not byte_buffer.is_empty():
message_id, sequence_number, message_flags = \
byte_buffer.read_struct(self.MESSAGE_TRANSPORT_HEADER)
message_type_id = messages.BaseMessage.read_header_from_byte_buffer(
byte_buffer)[0]
message = self.message_factory.get_by_id(message_type_id)()
message.read_from_byte_buffer(byte_buffer)
# - These flags are for consumption by .update()
message_flags_bf = bitfield(message_flags)
message.is_reliable = message_flags_bf[1]
message.is_ordered = message_flags_bf[0]
message.sequence_number = sequence_number
message.message_id = message_id
parsed_messages.append(message)
return parsed_messages
def _parse_packet(self, packet_bytes):
'''
Parse a raw udp packet and return a list of parsed messages.
'''
byte_buffer = ByteBuffer(packet_bytes)
parsed_messages = []
while not byte_buffer.is_empty():
message_id, sequence_number, message_flags = \
byte_buffer.read_struct(self.MESSAGE_TRANSPORT_HEADER)
message_type_id = messages.BaseMessage.read_header_from_byte_buffer(
byte_buffer)[0]
message = self.message_factory.get_by_id(message_type_id)()
message.read_from_byte_buffer(byte_buffer)
# - These flags are for consumption by .update()
message_flags_bf = bitfield(message_flags)
message.is_reliable = message_flags_bf[1]
message.is_ordered = message_flags_bf[0]
message.sequence_number = sequence_number
message.message_id = message_id
parsed_messages.append(message)
return parsed_messages
def send_message(self, message, ordered=False, reliable=False):
'''
Send a message and specify any options for the send method used.
A message sent inOrder is implicitly sent as reliable.
message is an instance of a subclass of packets.BasePacket.
Returns the number of bytes added to the output queue for this
message (header + message).
'''
self._last_send_timestamp = time.time()
self._outgoing_message_id += 1
message_id = self._outgoing_message_id
if ordered:
self._outgoing_ordered_sequence_number += 1
inorder_sequence_number = self._outgoing_ordered_sequence_number
else:
inorder_sequence_number = 0
packet_flags = bitfield()
packet_flags[0] = int(ordered)
packet_flags[1] = int(reliable)
message_transport_header = struct.pack(
'!'+self.MESSAGE_TRANSPORT_HEADER,
message_id, inorder_sequence_number, int(packet_flags))
message_bytes = message.get_packet_bytes()
total_length = len(message_bytes)+len(message_transport_header)
self._out_bytes += total_length
self._add_message_bytes_to_output_list(
message_id,
message_transport_header+message_bytes,
ordered or reliable)
self._log.debug('Packet data length = %s' % len(message_bytes))
self._log.debug('Header length = %s' % len(message_transport_header))
self._log.debug('Added %d byte %s packet in outgoing buffer' %
(total_length, message.__class__.__name__))
return total_length
def send_message(self, message, ordered=False, reliable=False):
'''
Send a message and specify any options for the send method used.
A message sent inOrder is implicitly sent as reliable.
message is an instance of a subclass of packets.BasePacket.
Returns the number of bytes added to the output queue for this
message (header + message).
'''
self._last_send_timestamp = time.time()
self._outgoing_message_id += 1
message_id = self._outgoing_message_id
if ordered:
self._outgoing_ordered_sequence_number += 1
inorder_sequence_number = self._outgoing_ordered_sequence_number
else:
inorder_sequence_number = 0
packet_flags = bitfield()
packet_flags[0] = int(ordered)
packet_flags[1] = int(reliable)
message_transport_header = struct.pack(
'!' + self.MESSAGE_TRANSPORT_HEADER, message_id,
inorder_sequence_number, int(packet_flags))
message_bytes = message.get_packet_bytes()
total_length = len(message_bytes) + len(message_transport_header)
self._out_bytes += total_length
self._add_message_bytes_to_output_list(
message_id, message_transport_header + message_bytes, ordered
or reliable)
self._log.debug('Packet data length = %s' % len(message_bytes))
self._log.debug('Header length = %s' % len(message_transport_header))
self._log.debug('Added %d byte %s packet in outgoing buffer' %
(total_length, message.__class__.__name__))
return total_length
