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Libp2p Connection Limit (#2455)

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* Get libp2p to handle connection limits

* fmt
This commit is contained in:
Age Manning
2021-07-15 10:53:59 +10:00
parent 6818a94171
commit 08fedbfcba
4 changed files with 372 additions and 43 deletions
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6
beacon_node/eth2_libp2p/Cargo.toml
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@@ -42,8 +42,10 @@ regex = "1.3.9"
strum = { version = "0.20", features = ["derive"] }
[dependencies.libp2p]
version = "0.39.1"
default-features = false
#version = "0.39.1"
#default-features = false
git = "https://github.com/sigp/rust-libp2p"
rev = "323cae1d08112052740834aa1fb262ae43e6f783"
features = ["websocket", "identify", "mplex", "yamux", "noise", "gossipsub", "dns-tokio", "tcp-tokio"]
[dev-dependencies]

7
beacon_node/eth2_libp2p/src/peer_manager/mod.rs
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@@ -54,15 +54,14 @@ const HEARTBEAT_INTERVAL: u64 = 30;
/// A fraction of `PeerManager::target_peers` that we allow to connect to us in excess of
/// `PeerManager::target_peers`. For clarity, if `PeerManager::target_peers` is 50 and
/// PEER_EXCESS_FACTOR = 0.1 we allow 10% more nodes, i.e 55.
const PEER_EXCESS_FACTOR: f32 = 0.1;
pub const PEER_EXCESS_FACTOR: f32 = 0.1;
/// A fraction of `PeerManager::target_peers` that need to be outbound-only connections.
pub const MIN_OUTBOUND_ONLY_FACTOR: f32 = 0.1;
/// Relative factor of peers that are allowed to have a negative gossipsub score without penalizing
/// them in lighthouse.
const ALLOWED_NEGATIVE_GOSSIPSUB_FACTOR: f32 = 0.1;
/// A fraction of `PeerManager::target_peers` that need to be outbound-only connections.
const MIN_OUTBOUND_ONLY_FACTOR: f32 = 0.1;
/// The main struct that handles peer's reputation and connection status.
pub struct PeerManager<TSpec: EthSpec> {
/// Storage of network globals to access the `PeerDB`.

15
beacon_node/eth2_libp2p/src/service.rs
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@@ -27,6 +27,8 @@ use std::sync::Arc;
use std::time::Duration;
use types::{ChainSpec, EnrForkId, EthSpec};
use crate::peer_manager::{MIN_OUTBOUND_ONLY_FACTOR, PEER_EXCESS_FACTOR};
pub const NETWORK_KEY_FILENAME: &str = "key";
/// The maximum simultaneous libp2p connections per peer.
const MAX_CONNECTIONS_PER_PEER: u32 = 1;
@@ -129,8 +131,17 @@ impl<TSpec: EthSpec> Service<TSpec> {
let limits = ConnectionLimits::default()
.with_max_pending_incoming(Some(5))
.with_max_pending_outgoing(Some(16))
.with_max_established_incoming(Some((config.target_peers as f64 * 1.2) as u32))
.with_max_established_outgoing(Some((config.target_peers as f64 * 1.2) as u32))
.with_max_established_incoming(Some(
(config.target_peers as f32
* (1.0 + PEER_EXCESS_FACTOR - MIN_OUTBOUND_ONLY_FACTOR))
as u32,
))
.with_max_established_outgoing(Some(
(config.target_peers as f32 * (1.0 + PEER_EXCESS_FACTOR)) as u32,
))
.with_max_established_total(Some(
(config.target_peers as f32 * (1.0 + PEER_EXCESS_FACTOR)) as u32,
))
.with_max_established_per_peer(Some(MAX_CONNECTIONS_PER_PEER));
(