diff -r e178d19ff91c -r c8c4c707ff3a src/java.net.http/share/classes/jdk/internal/net/http/websocket/MessageQueue.java
--- a/src/java.net.http/share/classes/jdk/internal/net/http/websocket/MessageQueue.java	Fri Mar 09 16:53:44 2018 +0000
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/websocket/MessageQueue.java	Fri Mar 09 19:10:01 2018 +0000
@@ -83,7 +83,7 @@
  */
 public class MessageQueue {
 
-    private final static boolean DEBUG = false;
+    private final static boolean DEBUG = true;
 
     @Stable
     private final Message[] elements;