From 2d7c24cf79a860e0727903e797ea0b9bfb888a53 Mon Sep 17 00:00:00 2001
From: Oscar Guindzberg <oscar.guindzberg@gmail.com>
Date: Mon, 1 Apr 2019 15:28:04 -0300
Subject: [PATCH] PeerGroup.handlePeerDeath(): check isAlreadyAdded() before
 calling inactives.offer(address).

---
 core/src/main/java/org/bitcoinj/core/PeerGroup.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/org/bitcoinj/core/PeerGroup.java b/core/src/main/java/org/bitcoinj/core/PeerGroup.java
index 137adeaf859..876ca674814 100644
--- a/core/src/main/java/org/bitcoinj/core/PeerGroup.java
+++ b/core/src/main/java/org/bitcoinj/core/PeerGroup.java
@@ -1872,7 +1872,9 @@ protected void handlePeerDeath(final Peer peer, @Nullable Throwable exception) {
             } else {
                 backoffMap.get(address).trackFailure();
                 // Put back on inactive list
-                inactives.offer(address);
+                if (!isAlreadyAdded(address)) {
+                    inactives.offer(address);
+                }
             }
 
             if (numPeers < getMaxConnections()) {