gnosis/lighthouse
1
0
Fork 0
mirror of https://github.com/sigp/lighthouse.git synced 2026-03-17 11:52:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

Altair networking (#2300)

Browse Source 
## Issue Addressed

Resolves #2278 

## Proposed Changes

Implements the networking components for the Altair hard fork https://github.com/ethereum/eth2.0-specs/blob/dev/specs/altair/p2p-interface.md

## Additional Info

This PR acts as the base branch for networking changes and tracks https://github.com/sigp/lighthouse/pull/2279 . Changes to gossip, rpc and discovery can be separate PRs to be merged here for ease of review.

Co-authored-by: realbigsean <seananderson33@gmail.com>
This commit is contained in:
Pawan Dhananjay
2021-08-04 01:44:57 +00:00
parent 6a620a31da
commit e8c0d1f19b
51 changed files with 4038 additions and 1354 deletions
Download Patch File Download Diff File Expand all files Collapse all files

106
beacon_node/eth2_libp2p/src/config.rs
View File

@@ -12,7 +12,9 @@ use libp2p::Multiaddr;
use serde_derive::{Deserialize, Serialize};
use sha2::{Digest, Sha256};
use std::path::PathBuf;
use std::sync::Arc;
use std::time::Duration;
use types::{ForkContext, ForkName};
/// The maximum transmit size of gossip messages in bytes.
pub const GOSSIP_MAX_SIZE: usize = 1_048_576;
@@ -109,47 +111,9 @@ impl Default for Config {
.join(DEFAULT_BEACON_NODE_DIR)
.join(DEFAULT_NETWORK_DIR);
// The function used to generate a gossipsub message id
// We use the first 8 bytes of SHA256(data) for content addressing
let fast_gossip_message_id = |message: &RawGossipsubMessage| {
FastMessageId::from(&Sha256::digest(&message.data)[..8])
};
fn prefix(prefix: [u8; 4], data: &[u8]) -> Vec<u8> {
let mut vec = Vec::with_capacity(prefix.len() + data.len());
vec.extend_from_slice(&prefix);
vec.extend_from_slice(data);
vec
}
let gossip_message_id = |message: &GossipsubMessage| {
MessageId::from(
&Sha256::digest(prefix(MESSAGE_DOMAIN_VALID_SNAPPY, &message.data).as_slice())
[..20],
)
};
// gossipsub configuration
// Note: The topics by default are sent as plain strings. Hashes are an optional
// parameter.
// Note: Using the default config here. Use `gossipsub_config` function for getting
// Lighthouse specific configuration for gossipsub.
let gs_config = GossipsubConfigBuilder::default()
.max_transmit_size(GOSSIP_MAX_SIZE)
.heartbeat_interval(Duration::from_millis(700))
.mesh_n(8)
.mesh_n_low(MESH_N_LOW)
.mesh_n_high(12)
.gossip_lazy(6)
.fanout_ttl(Duration::from_secs(60))
.history_length(12)
.max_messages_per_rpc(Some(500)) // Responses to IWANT can be quite large
.history_gossip(3)
.validate_messages() // require validation before propagation
.validation_mode(ValidationMode::Anonymous)
// prevent duplicates for 550 heartbeats(700millis * 550) = 385 secs
.duplicate_cache_time(Duration::from_secs(385))
.message_id_fn(gossip_message_id)
.fast_message_id_fn(fast_gossip_message_id)
.allow_self_origin(true)
.build()
.expect("valid gossipsub configuration");
@@ -209,3 +173,65 @@ impl Default for Config {
}
}
}
/// Return a Lighthouse specific `GossipsubConfig` where the `message_id_fn` depends on the current fork.
pub fn gossipsub_config(fork_context: Arc<ForkContext>) -> GossipsubConfig {
// The function used to generate a gossipsub message id
// We use the first 8 bytes of SHA256(data) for content addressing
let fast_gossip_message_id =
|message: &RawGossipsubMessage| FastMessageId::from(&Sha256::digest(&message.data)[..8]);
fn prefix(
prefix: [u8; 4],
message: &GossipsubMessage,
fork_context: Arc<ForkContext>,
) -> Vec<u8> {
let topic_bytes = message.topic.as_str().as_bytes();
match fork_context.current_fork() {
ForkName::Altair => {
let topic_len_bytes = topic_bytes.len().to_le_bytes();
let mut vec = Vec::with_capacity(
prefix.len() + topic_len_bytes.len() + topic_bytes.len() + message.data.len(),
);
vec.extend_from_slice(&prefix);
vec.extend_from_slice(&topic_len_bytes);
vec.extend_from_slice(topic_bytes);
vec.extend_from_slice(&message.data);
vec
}
ForkName::Base => {
let mut vec = Vec::with_capacity(prefix.len() + message.data.len());
vec.extend_from_slice(&prefix);
vec.extend_from_slice(&message.data);
vec
}
}
}
let gossip_message_id = move |message: &GossipsubMessage| {
MessageId::from(
&Sha256::digest(
prefix(MESSAGE_DOMAIN_VALID_SNAPPY, message, fork_context.clone()).as_slice(),
)[..20],
)
};
GossipsubConfigBuilder::default()
.max_transmit_size(GOSSIP_MAX_SIZE)
.heartbeat_interval(Duration::from_millis(700))
.mesh_n(8)
.mesh_n_low(MESH_N_LOW)
.mesh_n_high(12)
.gossip_lazy(6)
.fanout_ttl(Duration::from_secs(60))
.history_length(12)
.max_messages_per_rpc(Some(500)) // Responses to IWANT can be quite large
.history_gossip(3)
.validate_messages() // require validation before propagation
.validation_mode(ValidationMode::Anonymous)
// prevent duplicates for 550 heartbeats(700millis * 550) = 385 secs
.duplicate_cache_time(Duration::from_secs(385))
.message_id_fn(gossip_message_id)
.fast_message_id_fn(fast_gossip_message_id)
.allow_self_origin(true)
.build()
.expect("valid gossipsub configuration")
}