[net] feeler connections can be made to outbound peers in same netgroup

Fixes a bug where feelers could be stuck trying to resolve a collision in the
tried table that is to an address in the same netgroup as an existing outbound peer.

Thanks to Muoi Tran for the original bug report and detailed debug logs to track
this down.
This commit is contained in:
Suhas Daftuar 2019-02-26 15:04:48 -05:00
parent 4d834018e3
commit 4991e3c813

View file

@ -1765,9 +1765,15 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect)
addr = addrman.Select(fFeeler);
}
// if we selected an invalid address, restart
if (!addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr))
// Require outbound connections to be to distinct network groups
if (!fFeeler && setConnected.count(addr.GetGroup())) {
break;
}
// if we selected an invalid address, restart
if (!addr.IsValid() || IsLocal(addr)) {
break;
}
// If we didn't find an appropriate destination after trying 100 addresses fetched from addrman,
// stop this loop, and let the outer loop run again (which sleeps, adds seed nodes, recalculates