From f091c772d66054974973cb79f298ef2a1fda01e0 Mon Sep 17 00:00:00 2001
From: Hernando Scheidl <scheidl@gmail.com>
Date: Wed, 25 Jun 2025 18:02:51 -0300
Subject: [PATCH] Fix ArrayIndexOutOfBoundsException in
 UnknownAttribute.getBytes() when there is only one unknown attribute

---
 src/main/java/de/javawi/jstun/attribute/UnknownAttribute.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/de/javawi/jstun/attribute/UnknownAttribute.java b/src/main/java/de/javawi/jstun/attribute/UnknownAttribute.java
index 04f1abb..045bbc1 100644
--- a/src/main/java/de/javawi/jstun/attribute/UnknownAttribute.java
+++ b/src/main/java/de/javawi/jstun/attribute/UnknownAttribute.java
@@ -59,7 +59,7 @@ public byte[] getBytes() throws UtilityException {
 		}
 		// padding
 		if (unkown.size()%2 == 1) {
-			System.arraycopy(Utility.integerToTwoBytes(typeToInteger(unkown.elementAt(1))), 0, result, 4, 2);
+			System.arraycopy(Utility.integerToTwoBytes(typeToInteger(unkown.lastElement())), 0, result, 4, 2);
 		}
 		return result;
 	}