Files
lnd/discovery
yyforyongyu 9fecfed3b5 discovery: fix race access to syncer's state
This commit fixes the following race,
1. syncer(state=syncingChans) sends QueryChannelRange
2. remote peer replies ReplyChannelRange
3. ProcessQueryMsg fails to process the remote peer's msg as its state
   is neither waitingQueryChanReply nor waitingQueryRangeReply.
4. syncer marks its new state waitingQueryChanReply, but too late.

The historical sync will now fail, and the syncer will be stuck at this
state. What's worse is it cannot forward channel announcements to other
connected peers now as it will skip the broadcasting during initial
graph sync.

This is now fixed to make sure the following two steps are atomic,
1. syncer(state=syncingChans) sends QueryChannelRange
2. syncer marks its new state waitingQueryChanReply.
2025-01-17 02:39:07 +08:00
..
2025-01-05 20:45:35 +08:00