[rabbitmq-discuss] Fanout exchange not playing ball?

[Rich Kim]

Taking a stab at this one, but have you setup your two listening clients 
with separate queue names? When using a fanout exchange and binding queues 
to the exchange, when you attach the second listener to the exchange, the 
queue name is already found, and therefore performs a NOOP. Both listeners 
share the same queue name, and thereafter begin round-robin like behavior. 


Create two listeners with distinct queue names, and you should see your 
expected behavior.

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Richard Kim
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Tim Perrett <tperrett at googlemail.com> 
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05/18/2009 05:27 PM

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[rabbitmq-discuss] Fanout exchange not playing ball?






Hey guys,

I've setup a fanout exchange and my expectation does not match the
output... My expectation was that using a fanout exchange all
listening clients would get all messages - however this doesn't appear
to be the case. I started two separate instances of the same
application and run the listeners - I then publish a message into the
exchange, and it appears that App1 gets a message, then App2 gets
nothing. I send another message into the queue and then App2 gets the
message but not App1 - im a little lost how this could happen?

My creation code looks like:

    val ticket = channel.accessRequest("/data")
    channel.exchangeDeclare(ticket, "mult", "topic")
    channel.queueDeclare(ticket, "mult_queue")
    channel.queueBind(ticket, "mult_queue", "mult", "example.*")
    channel.basicConsume(ticket, "mult_queue", false, new
SerializedConsumer(channel, this))


Any ideas / suggestions?

Cheers, Tim

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