def cancelRequestFor(self, piece_index, block_index):
if ((piece_index, block_index) in self.set_of_blocks_requested):
self.set_of_blocks_requested.remove((piece_index, block_index))
begin = block_index * BLOCK_SIZE
piece_index = Messages.number_to_bytes(piece_index)
begin = Messages.number_to_bytes(block_index)
length = Messages.number_to_bytes(BLOCK_SIZE)
self.transport.write(
str(Messages.Cancel(index=piece_index, begin=begin,
length=length)))
def parseNonHandshakeMessage(self, data):
bytestring = data
if (bytestring[0:4] == '\x00\x00\x00\x00'):
# Its a Keep Alive message #
message_obj = Messages.KeepAlive(response=bytestring)
else:
message_obj = {
0: lambda: Messages.Choke(response=bytestring),
1: lambda: Messages.Unchoke(response=bytestring),
2: lambda: Messages.Interested(response=bytestring),
3: lambda: Messages.Interested(response=bytestring),
4: lambda: Messages.Have(response=bytestring),
5: lambda: Messages.Bitfield(response=bytestring),
6: lambda: Messages.Request(response=bytestring),
7: lambda: Messages.Piece(response=bytestring),
8: lambda: Messages.Cancel(response=bytestring),
9: lambda: Messages.Port(response=bytestring),
}[struct.unpack(
'!b',
data[4])[0]]() # The 5th byte in 'data' is the message type/id
self.process_message(message_obj)