From 011fe40d971631106980c28df3ed8a51e7e875f6 Mon Sep 17 00:00:00 2001
From: Oscar Guindzberg <oscar.guindzberg@gmail.com>
Date: Tue, 12 Feb 2019 15:02:20 -0300
Subject: [PATCH] PeerGroup.addAddress(): don't increase max connections if
 address already exist

---
 .../main/java/org/bitcoinj/core/PeerGroup.java    | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/core/src/main/java/org/bitcoinj/core/PeerGroup.java b/core/src/main/java/org/bitcoinj/core/PeerGroup.java
index b98bd2c0bcb..32840968922 100644
--- a/core/src/main/java/org/bitcoinj/core/PeerGroup.java
+++ b/core/src/main/java/org/bitcoinj/core/PeerGroup.java
@@ -979,22 +979,25 @@ public void addAddress(PeerAddress peerAddress) {
         int newMax;
         lock.lock();
         try {
-            addInactive(peerAddress);
-            newMax = getMaxConnections() + 1;
+            if( addInactive(peerAddress) ) {
+                newMax = getMaxConnections() + 1;
+                setMaxConnections(newMax);
+            }
         } finally {
             lock.unlock();
         }
-        setMaxConnections(newMax);
     }
 
-    private void addInactive(PeerAddress peerAddress) {
+    private boolean addInactive(PeerAddress peerAddress) {
         lock.lock();
         try {
             // Deduplicate
-            if (backoffMap.containsKey(peerAddress))
-                return;
+            if (backoffMap.containsKey(peerAddress)) {
+                return false;
+            }
             backoffMap.put(peerAddress, new ExponentialBackoff(peerBackoffParams));
             inactives.offer(peerAddress);
+            return true;
         } finally {
             lock.unlock();
         }