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GS: You could do this by browsing the queue (though there is no support then for moving or modifying a message). A scheme that avoids duplicating too much of the standard messaging behaviour would be good.

RG: the problem with that is that it requires you to be on an AMQP 0-10 connection.  I would like it to be that we can conduct QMF over other protocols, namely AMQP0-9 or JMX.  I understand your concern about duplicating functionality... as you already mentioned, moving can't be done easily anyway, but I see this inspection somewhat differently to browsing... and (in particular) without some form of server side selector I don't think the C++ broker could do what I am talking about (pick an arbitrary message from the queue and inspect it).

• Values with High/Low watermarks... the historic low for these will almost invariably be 0, so what is the point?

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