def from_bytes(data):
if not check_minimal_bytes_length(data, 8):
return None
msg = TrackerResponseMessage()
offset = 0
msg.peers = list()
msg.error = None
try:
offset, msg.message_type = read_integer(data, offset)
offset, msg.transaction_id = read_integer(data, offset)
if msg.message_type == 3:
msg.error = str(data[offset:len(data)])
Logger().write(LogVerbosity.Important,
"Tracker error message: " + msg.error)
else:
offset, msg.interval = read_integer(data, offset)
offset, msg.leechers = read_integer(data, offset)
offset, msg.seeders = read_integer(data, offset)
bytes_left = len(data) - offset
total_peers = int(bytes_left / 6)
for index in range(total_peers):
msg.peers.append(uri_from_bytes(data[offset:offset + 6]))
offset += 6
except Exception as e:
Logger().write(
LogVerbosity.Important, "Error in tacker message: " + str(e) +
". Message: " + str(data))
return None
return msg
def from_bytes(cls, data):
if not check_minimal_bytes_length(data, 10):
return None
offset = 1
offset, piece_index = Network.read_integer(data, offset)
offset, data_offset = Network.read_integer(data, offset)
offset, data_bytes = Network.read_bytes(data,
len(data) - offset, offset)
return cls(piece_index, data_offset, data_bytes)
def from_bytes(cls, data):
if not check_minimal_bytes_length(data, 2):
return None
offset, payload_data = Network.read_bytes(data, len(data) - 2, 2)
payload = Bencode.bdecode(payload_data)
metadata_message_type = payload[b'msg_type']
piece_index = payload[b'piece']
total_size = 0
metadata = None
if metadata_message_type == MetadataMessageType.Data:
if b'total_size' not in payload:
return None
total_size = payload[b'total_size']
metadata = data[2 + len(Bencode.bencode(payload)):len(data)]
return cls(None, metadata_message_type, piece_index, total_size,
metadata)
def from_bytes(cls, data):
if not check_minimal_bytes_length(data, 3):
return None
offset, payload = Network.read_bytes(data, len(data) - 2, 2)
return cls(payload)
def from_bytes(cls, data):
if not check_minimal_bytes_length(data, 2):
return None
offset, bitfield = Network.read_bytes(data, len(data) - 1, 1)
return cls(bitfield)