ah.. onMesage was causing the bytes messages content to be nulled.. setting the readOnly properties manually.

git-svn-id: https://svn.apache.org/repos/asf/incubator/activemq/trunk@394145 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/main/java/org/apache/activemq/transport/stomp/Send.java

@@ -125,8 +125,9 @@ class Send implements StompCommand {
             msg.setTransactionId(tx_id);
         }
         
-        msg.onSend();
-        
+        msg.setReadOnlyBody(true);
+        msg.setReadOnlyProperties(true);
+
         return new CommandEnvelope(msg, headers);
     }