Behaviors in AMQ Network Connectors environment

Issue

• As per How to configure AMQ connection between inner and outer network, AMQ brokers are deployed to an outer network and an inner network.

  • The broker in inner network configures networkConnectors below to send messages to consumers in the outer network(In this example, 10.72.45.226 is the outer network broker IP address).

    <networkConnectors>
        <networkConnector uri="static:(tcp://10.72.45.226:61616)" name="internal_to_external" duplex="true"/>
    </networkConnectors>
    
    

  • The broker in the outer network does not configure networkConnectors so that this broker could not actively establish a new connection to send messages to consumers in the inner network.

• Inside both outer and inner network, there are a pair of Producer & Consumer applications running to send/receive messages to/from the local broker. Also, there are a pair of Publisher & Subscriber applications configured to publish/subscribe messages to/from the local broker. To ease the description further, the names of the applications are described below:

  Client	Outer network	Inner network
  Consumer	ext-c	int-c
  Producer	ext-p	int-p
  Durable Subscriber	ext-s	int-s
  Non-Durable Subscriber	ext-s-non	int-s-non
  Publisher	ext-pub	int-pub

• In the networkConnectors enabled AMQ environment, I want to understand the behaviors for my producer/consumer clients.

• Sometimes due to network instability, the connection might be failed between outer and inner networks. Will there be messages loss for cross-network transmission?
• In what condition the broker will replicate the messages across the network?
• How durable subscribers differ from non-durable subscribers in the message consumption process?