From 924ba6621853151849853f8b66ebccd21cdfe663 Mon Sep 17 00:00:00 2001
From: divma <divma@protonmail.com>
Date: Thu, 6 Aug 2020 00:04:33 +0000
Subject: [PATCH] Update v0.12.2 gossip params (#1449)

## Issue Addressed
#1422
---
 beacon_node/eth2_libp2p/src/config.rs | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/beacon_node/eth2_libp2p/src/config.rs b/beacon_node/eth2_libp2p/src/config.rs
index 288fff227..fa4ec9792 100644
--- a/beacon_node/eth2_libp2p/src/config.rs
+++ b/beacon_node/eth2_libp2p/src/config.rs
@@ -95,11 +95,18 @@ impl Default for Config {
         // parameter.
         let gs_config = GossipsubConfigBuilder::new()
             .max_transmit_size(GOSSIP_MAX_SIZE)
-            .heartbeat_interval(Duration::from_secs(1))
+            .heartbeat_interval(Duration::from_millis(700))
+            .mesh_n(6)
+            .mesh_n_low(5)
+            .mesh_n_high(12)
+            .gossip_lazy(6)
+            .fanout_ttl(Duration::from_secs(60))
+            .history_length(6)
+            .history_gossip(3)
             .validate_messages() // require validation before propagation
             .validation_mode(ValidationMode::Permissive)
-            // Prevent duplicates by caching messages from an epoch + 1 slot amount of time (33*12)
-            .duplicate_cache_time(Duration::from_secs(396))
+            // prevent duplicates for 550 heartbeats(700millis * 550) = 385 secs
+            .duplicate_cache_time(Duration::from_secs(385))
             .message_id_fn(gossip_message_id)
             .build();