Chapter 2. Enhancements

ENTMQCL-536 - Provide a way to intercept authentication failure

Authentication failures are now distinguished from other connection failures during reconnect. If authentication fails, the on_transport_error handler is fired with an AMQP unauthorized-access error. Connections configured to reconnect will terminate on this error but continue to retry after other connection errors.

ENTMQCL-605 - Support acknowledging individual messages

The JMS CLIENT_ACKNOWLEDGE mode enables explicit message acknowledgment using the Message.acknowledge() method. This method acknowledges all the messages previously received on the session at the time it is called.

AMQ JMS now has an "individual acknowledge" mode that makes Message.acknowledge() apply only to the message it is called on.

ENTMQCL-568 - Support a no-acknowledge mode at the session level

The client now offers a "no acknowledge" mode to enable presettled (at-most-once) message delivery on a per-session basis.

ENTMQCL-556 - Try each endpoint before delaying for next reconnect cycle

The client now tries to connect to each endpoint in the failover set before delaying between reconnect cycles, rather than delaying between each endpoint.

ENTMQCL-573 - Exclude user and password in logging of connection URLs

If a user or password are provided in a connection URL, they are now omitted in any printed representation of the connection.