From 8937b3ec86c276057444033d13bbfed0c86fdd84 Mon Sep 17 00:00:00 2001
From: CalDescent <caldescent@protonmail.com>
Date: Sat, 5 Feb 2022 10:19:26 +0000
Subject: [PATCH] Don't allow duplicate transaction in the incoming
 transactions queue.

This should reduce database load slightly, as it won't have to check the same transaction multiple times in each batch.
---
 src/main/java/org/qortal/controller/Controller.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/org/qortal/controller/Controller.java b/src/main/java/org/qortal/controller/Controller.java
index c4429346..51f91970 100644
--- a/src/main/java/org/qortal/controller/Controller.java
+++ b/src/main/java/org/qortal/controller/Controller.java
@@ -1287,7 +1287,9 @@ public class Controller extends Thread {
 		TransactionMessage transactionMessage = (TransactionMessage) message;
 		TransactionData transactionData = transactionMessage.getTransactionData();
 		if (this.incomingTransactions.size() < MAX_INCOMING_TRANSACTIONS) {
-			this.incomingTransactions.add(transactionData);
+			if (!this.incomingTransactions.contains(transactionData)) {
+				this.incomingTransactions.add(transactionData);
+			}
 		}
 	}