Fix for

ceridwen-com#3
zcc39r · Jan 30, 2020 · 38e07f9 · 38e07f9
1 parent 8db66c4
commit 38e07f9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/main/java/com/ceridwen/circulation/SIP/messages/Message.java b/src/main/java/com/ceridwen/circulation/SIP/messages/Message.java
@@ -599,7 +599,7 @@ protected static String calculateChecksum(String data) throws UnsupportedEncodin
           checksum += b & 0xff;
         }
         checksum = -checksum & 0xffff;
-        return Integer.toHexString(checksum).toUpperCase();
+        return String.format("%1$04X", checksum);
     }
 
     protected String addChecksum(String command, Character sequence) {