From 1117993a24122f334e2a8c15944cbd0bf3e3b2ca Mon Sep 17 00:00:00 2001
From: Dmitriy Ryajov <dryajov@gmail.com>
Date: Thu, 28 Jan 2021 00:31:29 -0600
Subject: [PATCH] Libp2p connection limits (#2272)

* max peers gets set as connection limits

* pass max connections
---
 beacon_chain/eth2_network.nim   | 8 +++++++-
 scripts/launch_local_testnet.sh | 2 +-
 vendor/nim-libp2p               | 2 +-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/beacon_chain/eth2_network.nim b/beacon_chain/eth2_network.nim
index 33400afcd..522eea3b4 100644
--- a/beacon_chain/eth2_network.nim
+++ b/beacon_chain/eth2_network.nim
@@ -1526,7 +1526,13 @@ proc newBeaconSwitch*(conf: BeaconNodeConf, seckey: PrivateKey,
 
   let identify = newIdentify(peerInfo)
 
-  newSwitch(peerInfo, transports, identify, muxers, secureManagers)
+  newSwitch(
+    peerInfo,
+    transports,
+    identify,
+    muxers,
+    secureManagers,
+    maxConnections = conf.maxPeers)
 
 proc createEth2Node*(rng: ref BrHmacDrbgContext,
                      conf: BeaconNodeConf,
diff --git a/scripts/launch_local_testnet.sh b/scripts/launch_local_testnet.sh
index 51986a51e..9ea1300bc 100755
--- a/scripts/launch_local_testnet.sh
+++ b/scripts/launch_local_testnet.sh
@@ -373,7 +373,7 @@ for NUM_NODE in $(seq 0 $(( NUM_NODES - 1 ))); do
     --log-level="${LOG_LEVEL}" \
     --tcp-port=$(( BASE_PORT + NUM_NODE )) \
     --udp-port=$(( BASE_PORT + NUM_NODE )) \
-    --max-peers=$(( NUM_NODES - 1 )) \
+    --max-peers=$(( NUM_NODES * 2 - 1 )) \
     --data-dir="${NODE_DATA_DIR}" \
     ${BOOTSTRAP_ARG} \
     ${STATE_SNAPSHOT_ARG} \
diff --git a/vendor/nim-libp2p b/vendor/nim-libp2p
index 0959877b2..1d77d37f1 160000
--- a/vendor/nim-libp2p
+++ b/vendor/nim-libp2p
@@ -1 +1 @@
-Subproject commit 0959877b29be802b857cb10ab194f5cf29e3649f
+Subproject commit 1d77d37f17a8d4b9bbafb83eae69790dad48b4c5