Auto-Acknowledgement Mode always sends unnecessary ACK message
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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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