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From "Arthur Naseef (JIRA)" <>
Subject [jira] [Created] (AMQ-3876) WireTap of TransportConnector messages for diagnostic purposes
Date Wed, 06 Jun 2012 16:16:22 GMT
Arthur Naseef created AMQ-3876:

             Summary: WireTap of TransportConnector messages for diagnostic purposes
                 Key: AMQ-3876
             Project: ActiveMQ
          Issue Type: New Feature
            Reporter: Arthur Naseef
            Priority: Minor

Being able to tap into the flow of messages on a TransportConnection would greatly help with
diagnosing problems such as complaints from clients that they are not receiving messages.

Think "tcpdump" for broker traffic.

A rough, working prototype will be attached.

The idea in the prototype is a new Connector on the BrokerService which does the following:
* accepts connections from a wire-tap tool (application)
* accepts a request to tap a specific TransportConnection
* adds a tap to the TransportConnection (requires change to TransportConnection)
* sends a copy of every command sent over the connection, via the {{oneway}} call, to the

After posting the prototype, I'll post wish-list items.

If someone with more knowledge and background working with connectors can pick this up, that
would be great.  Otherwise, I'll plan to implement it, looking for any advice.  For example,
one concern is that the tap should prefer to drop content rather than either (a) use large
amounts of resources to buffer them, or (b) in any way impacting the normal flow on the TransportConnection.

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