net: be more aggresive wrt removing from known peers DB #31
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Separate the two distinct problems: 1. We're unable to connect to mainchain 2. Mainchain doesn't support the functionality we need
Prior to this commit we end up trying to reconnect to peers every time we start up. Be more aggressive in removing bad peers from the DB list of known peers. Also make sure to re-add the seed node every time we start up, if we have an empty list of known peers.
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Ash-L2L
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Feb 3, 2025
| // might end up with this peer misbehaving, causing us to | ||
| // disconnect and delete it from the database. always try | ||
| // and stick it back in, if it's missing! | ||
| if net.known_peers.is_empty(&txn)? { |
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Why start a new db txn? This could happen in the same db txn that creates/opens the DB
| #[allow(clippy::let_and_return)] | ||
| let known_peers: Vec<_> = { | ||
| let rotxn = env.read_txn()?; | ||
| let mut txn = env.write_txn()?; |
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Nit: Prefer rotxn/rwtxn to clearly indicate DB locks, and to disambiguate w.r.t. network/block txs
| #[instrument(skip_all, fields(addr))] | ||
| pub fn remove_active_peer( | ||
| &self, | ||
| env: &heed::Env, |
| let () = self | ||
| .ctxt | ||
| .net | ||
| .remove_active_peer(&self.ctxt.env, addr)?; |
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If remove_active_peer also removes from known peers, then this seems wrong. A disconnected peer should still be in known peers
| let () = self | ||
| .ctxt | ||
| .net | ||
| .remove_active_peer(&self.ctxt.env, addr)?; |
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A peer connection error could have many causes, not sure if it is correct to remove from known peers here
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Prior to this commit we end up trying to reconnect to peers every time
we start up. Be more aggressive in removing bad peers from the DB list
of known peers.
Also make sure to re-add the seed node every time we start up, if we
have an empty list of known peers.