def response(self, typ, addr, id, rtr):
if self.mode == SCUMode.SendMode:
raise Exception
if typ == SCUPacketType.Rtr.value:
header = SCUHeader()
header.from_dict({
"typ": typ,
"id": id,
"seq": rtr,
})
packet = SCUPacket()
packet.from_dict({
"header": header,
"payload": b'',
})
self.socket.sendto(packet.raw(), addr)
elif typ == SCUPacketType.Fin.value:
header = SCUHeader()
header.from_dict({
"typ": typ,
"id": id,
"seq": rtr,
})
packet = SCUPacket()
packet.from_dict({
"header": header,
"payload": b'',
})
self.socket.sendto(packet.raw(), addr)
def response(self, typ, addr, key, seq, resendID, content=b""):
"""
responses a single packet of retry, or fin.
it can be used to just send packets.
"""
if self.mode == SCUMode.SendMode:
raise Exception
header = SCUHeader()
packet = SCUPacket()
header.from_dict({
"typ": typ,
"id": key,
"seq": seq,
"resendID": resendID
})
if typ == SCUPacketType.Rtr.value:
packet.from_dict({"header": header, "payload": content.encode()})
elif typ == SCUPacketType.Fin.value:
packet.from_dict({"header": header, "payload": b''})
else:
raise Exception()
self.socket.sendto(packet.raw(), addr)