From a39b85696380f210bd1d4196e0a66b5f2192dfbe Mon Sep 17 00:00:00 2001
From: sdghchj <sdghchj@qq.com>
Date: Mon, 6 Dec 2021 18:26:54 +0800
Subject: [PATCH] Keep only one connection between two peers

If a connection terminates with a dup error, do not add its remoteTCPAddress back into the targets
---
 connection_maker.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/connection_maker.go b/connection_maker.go
index df8d04c..93cbb52 100644
--- a/connection_maker.go
+++ b/connection_maker.go
@@ -195,6 +195,11 @@ func (cm *connectionMaker) connectionTerminated(conn Connection, err error) {
 		}
 		delete(cm.connections, conn)
 		if conn.isOutbound() {
+			if conn.Remote() != nil {
+				if _, ok := cm.ourself.Peer.connections[conn.Remote().Name]; ok {
+					return true
+				}
+			}
 			target := cm.targets[conn.remoteTCPAddress()]
 			target.state = targetWaiting
 			target.lastError = err