AaronFiore/electrum
1
0
Fork 0
Code Activity

lnpeer: rate-limit reply_channel_range

Browse Source
This commit is contained in:
SomberNight
2025-08-19 14:49:38 +00:00
parent 65d04dfbb7
commit b8d989e13b
1 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
electrum/lnpeer.py
View File

@@ -106,7 +106,7 @@ class Peer(Logger, EventListener):
assert self.node_ids[0] != self.node_ids[1]
self.last_message_time = 0
self.pong_event = asyncio.Event()
self.reply_channel_range = asyncio.Queue()
self.reply_channel_range = None # type: Optional[asyncio.Queue]
# gossip uses a single queue to preserve message order
self.recv_gossip_queue = asyncio.Queue(maxsize=self.RECV_GOSSIP_QUEUE_HARD_MAXSIZE)
self.our_gossip_timestamp_filter = None # type: Optional[GossipTimestampFilter]
@@ -709,6 +709,7 @@ class Peer(Logger, EventListener):
self.outgoing_gossip_reply = False
async def get_channel_range(self):
self.reply_channel_range = asyncio.Queue()
first_block = constants.net.BLOCK_HEIGHT_FIRST_LIGHTNING_CHANNELS
num_blocks = self.lnworker.network.get_local_height() - first_block
self.query_channel_range(first_block, num_blocks)
@@ -747,6 +748,7 @@ class Peer(Logger, EventListener):
a, b = intervals[0]
if a <= first_block and b >= first_block + num_blocks:
break
self.reply_channel_range = None
return ids, complete
def request_gossip(self, timestamp=0):
@@ -784,7 +786,7 @@ class Peer(Logger, EventListener):
ids = [decoded[i:i+8] for i in range(0, len(decoded), 8)]
return ids
def on_reply_channel_range(self, payload):
async def on_reply_channel_range(self, payload):
first = payload['first_blocknum']
num = payload['number_of_blocks']
complete = bool(int.from_bytes(payload['sync_complete'], 'big'))
@@ -792,6 +794,12 @@ class Peer(Logger, EventListener):
ids = self.decode_short_ids(encoded)
# self.logger.info(f"on_reply_channel_range. >>> first_block {first}, num_blocks {num}, "
# f"num_ids {len(ids)}, complete {complete}")
if self.reply_channel_range is None:
raise Exception("received 'reply_channel_range' without corresponding 'query_channel_range'")
while self.reply_channel_range.qsize() > 10:
# we block process_message until the queue gets consumed
self.logger.info("reply_channel_range queue is overflowing. sleeping...")
await asyncio.sleep(0.1)
self.reply_channel_range.put_nowait((first, num, complete, ids))
async def _send_reply_short_channel_ids(self, payload: dict):