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From "Jim Gomes (JIRA)" <j...@apache.org>
Subject [jira] Created: (AMQNET-61) Auto-Acknowledgement Mode always sends unnecessary ACK message
Date Wed, 12 Sep 2007 23:17:22 GMT
Auto-Acknowledgement Mode always sends unnecessary ACK message
--------------------------------------------------------------

                 Key: AMQNET-61
                 URL: https://issues.apache.org/activemq/browse/AMQNET-61
             Project: ActiveMQ .Net
          Issue Type: Bug
          Components: ActiveMQ Client, MSMQ, Stomp
         Environment: Windows XP SP2
.NET 2.0
            Reporter: Jim Gomes
            Assignee: James Strachan
            Priority: Minor


When a MessageConsumer receives a message, it sends a MessageAck even when the acknowledgment
mode is set to AutoAcknowledge.  This results in an error message being sent back to the client
stating that there is no such message to acknowledge.

According to standard JMS semantics, when AutoAcknowledge mode is used, the client does not
need to (and apparently should not) send back an ACK message.  An ACK message should only
be sent back when the subscription is in ClientAcknowledge or DupsOkAcknowledge mode.  Sending
back unnecessary responses creates unnecessary network traffic and load on a high-speed server.


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