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move udp server to test file, add link to BEP15

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This commit is contained in:
Victor Shyba 2022-03-05 02:21:15 -03:00
parent 4a0bf8a702
commit 006391dd26
2 changed files with 37 additions and 33 deletions
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33
lbry/torrent/tracker.py
View file

@ -3,9 +3,9 @@ import struct
import asyncio
import logging
from collections import namedtuple
from functools import reduce
log = logging.getLogger(__name__)
# see: http://bittorrent.org/beps/bep_0015.html and http://xbtt.sourceforge.net/udp_tracker_protocol.html
ConnectRequest = namedtuple("ConnectRequest", ["connection_id", "action", "transaction_id"])
ConnectResponse = namedtuple("ConnectResponse", ["action", "transaction_id", "connection_id"])
AnnounceRequest = namedtuple("AnnounceRequest",
@ -108,34 +108,3 @@ class UDPTrackerClientProtocol(asyncio.DatagramProtocol):
def connection_lost(self, exc: Exception = None) -> None:
self.transport = None
class UDPTrackerServerProtocol(asyncio.DatagramProtocol):
def __init__(self):
self.transport = None
self.known_conns = set()
self.peers = {}
def connection_made(self, transport: asyncio.DatagramTransport) -> None:
self.transport = transport
def datagram_received(self, data: bytes, address: (str, int)) -> None:
if len(data) < 16:
return
action = int.from_bytes(data[8:12], "big", signed=False)
if action == 0:
req = decode(ConnectRequest, data)
connection_id = random.getrandbits(32)
self.known_conns.add(connection_id)
return self.transport.sendto(encode(ConnectResponse(0, req.transaction_id, connection_id)), address)
elif action == 1:
req = decode(AnnounceRequest, data)
if req.connection_id not in self.known_conns:
resp = encode(ErrorResponse(3, req.transaction_id, b'Connection ID missmatch.\x00'))
else:
self.peers.setdefault(req.info_hash, [])
compact_ip = reduce(lambda buff, x: buff + bytearray([int(x)]), address[0].split('.'), bytearray())
self.peers[req.info_hash].append(compact_ip + req.port.to_bytes(2, "big", signed=False))
peers = [decode(CompactIPv4Peer, peer) for peer in self.peers[req.info_hash]]
resp = encode(AnnounceResponse(1, req.transaction_id, 1700, 0, len(peers), peers))
return self.transport.sendto(resp, address)

37
tests/unit/torrent/test_tracker.py
View file

@ -1,6 +1,41 @@
import asyncio
import random
from functools import reduce
from lbry.testcase import AsyncioTestCase
from lbry.torrent.tracker import UDPTrackerClientProtocol, UDPTrackerServerProtocol, CompactIPv4Peer
from lbry.torrent.tracker import UDPTrackerClientProtocol, encode, decode, CompactIPv4Peer, ConnectRequest, \
ConnectResponse, AnnounceRequest, ErrorResponse, AnnounceResponse
class UDPTrackerServerProtocol(asyncio.DatagramProtocol): # for testing. Not suitable for production
def __init__(self):
self.transport = None
self.known_conns = set()
self.peers = {}
def connection_made(self, transport: asyncio.DatagramTransport) -> None:
self.transport = transport
def datagram_received(self, data: bytes, address: (str, int)) -> None:
if len(data) < 16:
return
action = int.from_bytes(data[8:12], "big", signed=False)
if action == 0:
req = decode(ConnectRequest, data)
connection_id = random.getrandbits(32)
self.known_conns.add(connection_id)
return self.transport.sendto(encode(ConnectResponse(0, req.transaction_id, connection_id)), address)
elif action == 1:
req = decode(AnnounceRequest, data)
if req.connection_id not in self.known_conns:
resp = encode(ErrorResponse(3, req.transaction_id, b'Connection ID missmatch.\x00'))
else:
self.peers.setdefault(req.info_hash, [])
compact_ip = reduce(lambda buff, x: buff + bytearray([int(x)]), address[0].split('.'), bytearray())
self.peers[req.info_hash].append(compact_ip + req.port.to_bytes(2, "big", signed=False))
peers = [decode(CompactIPv4Peer, peer) for peer in self.peers[req.info_hash]]
resp = encode(AnnounceResponse(1, req.transaction_id, 1700, 0, len(peers), peers))
return self.transport.sendto(resp, address)
class UDPTrackerClientTestCase(AsyncioTestCase):