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Merge bitcoin/bitcoin#26847: p2p: track AddrMan totals by network and table, improve precision of adding fixed seeds

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80f39c99ef addrman, refactor: combine two size functions (Amiti Uttarwar)
4885d6f197 addrman, refactor: move count increment into Create() (Martin Zumsande)
c77c877a8e net: Load fixed seeds from reachable networks for which we don't have addresses (Martin Zumsande)
d35595a78a addrman: add function to return size by network and table (Martin Zumsande)

Pull request description:

  AddrMan currently doesn't track the number of its entries by network, it only knows the total number of addresses. This PR makes AddrMan keep track of these numbers, which would be helpful for multiple things:

  1. Allow to specifically add fixed seeds to AddrMan of networks where we don't have any addresses yet - even if AddrMan as a whole is not empty (partly fixing #26035). This is in particular helpful if the user abruptly changes `-onlynet` settings (such that addrs that used to be reachable are no longer and vice versa), in which case they currently could get stuck and not find any outbound peers. The second commit of this PR implements this.
  1. (Future work): Add logic for automatic connection management with respect to networks - such as making attempts to have at least one connection to each reachable network as suggested [here](https://github.com/bitcoin/bitcoin/issues/26035#issuecomment-1249420209). This would involve requesting an address from a particular network from AddrMan, and expanding its corresponding function `AddrMan::Select()`  to do this requires internal knowledge of the current number of addresses for each network and table to avoid getting stuck in endless loops.
  1. (Future work): Perhaps display the totals to users. At least I would find this helpful to debug, the existing option (`./bitcoin-cli -addrinfo`) is rather indirect by doing the aggregation itself in each call, doesn't distinguish between new and tried, and being based on `AddrMan::GetAddr()` it's also subject to a quality filter which we probably don't want in this spot.

ACKs for top commit:
  naumenkogs:
    utACK 80f39c9
  stratospher:
    ACK 80f39c9
  achow101:
    ACK 80f39c99ef
  vasild:
    ACK 80f39c99ef

Tree-SHA512: 6359f2e3f4db7c120c0789d92d74cb7d87a2ceedb7d6a34b5eff20c7f55c5c81092d10ed94efe29afc1c66947820a0d9c14876ee0c8d1f8e068a6df4e1131927
This commit is contained in:
Andrew Chow
2023-01-31 15:55:39 -05:00
parent b5868f4b1f 80f39c99ef
commit ba3d32715f
8 changed files with 182 additions and 62 deletions
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2
src/addrdb.cpp
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@@ -190,7 +190,7 @@ std::optional<bilingual_str> LoadAddrman(const NetGroupManager& netgroupman, con
const auto path_addr{args.GetDataDirNet() / "peers.dat"};
try {
DeserializeFileDB(path_addr, *addrman, CLIENT_VERSION);
LogPrintf("Loaded %i addresses from peers.dat %dms\n", addrman->size(), Ticks<std::chrono::milliseconds>(SteadyClock::now() - start));
LogPrintf("Loaded %i addresses from peers.dat %dms\n", addrman->Size(), Ticks<std::chrono::milliseconds>(SteadyClock::now() - start));
} catch (const DbNotFoundError&) {
// Addrman can be in an inconsistent state after failure, reset it
addrman = std::make_unique<AddrMan>(netgroupman, /*deterministic=*/false, /*consistency_check_ratio=*/check_addrman);