src/java.base/share/classes/sun/security/ssl/DTLSOutputRecord.java

8167680 DTLS implementation bugs

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1996, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -277,10 +277,20 @@
     void initHandshaker() {
         // clean up
         fragmenter = null;
     }
 
+    @Override
+    void launchRetransmission() {
+        // Note: Please don't retransmit if there are handshake messages
+        // or alerts waiting in the queue.
+        if (((alertMemos == null) || alertMemos.isEmpty()) &&
+                (fragmenter != null) && fragmenter.isRetransmittable()) {
+            fragmenter.setRetransmission();
+        }
+    }
+
     // buffered record fragment
     private static class RecordMemo {
         byte            contentType;
         byte            majorVersion;
         byte            minorVersion;