From 45cec80f310c966b63388b18a773533d0e9b9102 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Wed, 3 Aug 2022 16:57:14 -0700
Subject: Fix index usage

---
 src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java b/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
index d8a753abe..3ff8eb2fb 100644
--- a/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
@@ -239,7 +239,7 @@ public class GalileoProtocolDecoder extends BaseProtocolDecoder {
 
     private Object decodePositions(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
 
-        int length = (buf.readUnsignedShortLE() & 0x7fff) + 3;
+        int endIndex = (buf.readUnsignedShortLE() & 0x7fff) + buf.readerIndex();
 
         List<Position> positions = new LinkedList<>();
         Set<Integer> tags = new HashSet<>();
@@ -248,7 +248,7 @@ public class GalileoProtocolDecoder extends BaseProtocolDecoder {
         DeviceSession deviceSession = null;
         Position position = new Position(getProtocolName());
 
-        while (buf.readerIndex() < length) {
+        while (buf.readerIndex() < endIndex) {
 
             int tag = buf.readUnsignedByte();
             if (tags.contains(tag)) {
-- 
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