From dbc5fc5dcf697dcc00d357bbca5fe4669325148b Mon Sep 17 00:00:00 2001
From: Stefan Clark <stefanclark@gmail.com>
Date: Sat, 6 Aug 2022 17:42:22 +0100
Subject: Updated Xexun2 Protocol

---
 src/main/java/org/traccar/helper/Checksum.java | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

(limited to 'src/main/java/org/traccar/helper/Checksum.java')

diff --git a/src/main/java/org/traccar/helper/Checksum.java b/src/main/java/org/traccar/helper/Checksum.java
index e660790ef..db5817275 100644
--- a/src/main/java/org/traccar/helper/Checksum.java
+++ b/src/main/java/org/traccar/helper/Checksum.java
@@ -200,18 +200,14 @@ public final class Checksum {
         return (10 - (checksum % 10)) % 10;
     }
 
-    public static int udp(ByteBuffer data) {
+    public static int ip(ByteBuffer data) {
         int sum = 0;
-        int len = data.capacity();
-        for (int j = 0; len > 1; len--) {
+        while (data.remaining() > 0) {
             sum += data.get() & 0xff;
             if ((sum & 0x80000000) > 0) {
                 sum = (sum & 0xffff) + (sum >> 16);
             }
         }
-        if (len == 1) {
-            sum += data.get() & 0xff;
-        }
         while ((sum >> 16) > 0) {
             sum = (sum & 0xffff) + sum >> 16;
         }
-- 
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