1 files changed, 12 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/helper/BufferUtil.java b/src/main/java/org/traccar/helper/BufferUtil.java
index 9485c17c6..1e1a687fa 100644
--- a/src/main/java/org/traccar/helper/BufferUtil.java
+++ b/src/main/java/org/traccar/helper/BufferUtil.java
@@ -27,6 +27,18 @@ public final class BufferUtil {
     private BufferUtil() {
     }
 
+    public static int indexOf(ByteBuf buffer, int fromIndex, int toIndex, byte value, int count) {
+        int startIndex = fromIndex;
+        for (int i = 0; i < count; i++) {
+            int result = buffer.indexOf(startIndex, toIndex, value);
+            if (result < 0 || i == count - 1) {
+                return result;
+            }
+            startIndex = result + 1;
+        }
+        return -1;
+    }
+
     public static int indexOf(String needle, ByteBuf haystack) {
         return indexOf(needle, haystack, haystack.readerIndex(), haystack.writerIndex());
     }