From dffe4bed4541dee2645629729a245e7607d716ad Mon Sep 17 00:00:00 2001
From: Dmitriy Ryajov <dryajov@gmail.com>
Date: Tue, 4 Jan 2022 05:21:24 -0600
Subject: [PATCH] mitigate high traffic - drop faulty peers (#460)

Only allow 1 connection per peer

Co-authored-by: Tanguy <tanguy@status.im>
---
 libp2p/connmanager.nim | 2 +-
 tests/testswitch.nim   | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/libp2p/connmanager.nim b/libp2p/connmanager.nim
index 9613874..3f670cd 100644
--- a/libp2p/connmanager.nim
+++ b/libp2p/connmanager.nim
@@ -25,7 +25,7 @@ declareGauge(libp2p_peers, "total connected peers")
 
 const
   MaxConnections* = 50
-  MaxConnectionsPerPeer* = 5
+  MaxConnectionsPerPeer* = 1
 
 type
   TooManyConnectionsError* = object of LPError
diff --git a/tests/testswitch.nim b/tests/testswitch.nim
index 603812c..8d21a0f 100644
--- a/tests/testswitch.nim
+++ b/tests/testswitch.nim
@@ -562,6 +562,7 @@ suite "Switch":
         conns.dec
 
     switches.add(newStandardSwitch(
+        maxConnsPerPeer = 10,
         rng = rng))
 
     switches[0].addConnEventHandler(hook, ConnEventKind.Connected)