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From "Christopher G. Stach II" <>
Subject Re: Ports internally used by active Mq
Date Tue, 01 May 2007 02:00:48 GMT
Suchitha Koneru (sukoneru) wrote:
> Hello Active Mq Users , 
>                       Our application currently uses active mq 4.0.1
> version. We use an embedded broker  along with durable subscribers and
> topic publishers. 
> Active MQ also uses ports internally which are not configurable, these
> ports are randomly allocated.
>  For these ports ,Does active mq take into account  that if the port
> which it needs to use is already occupied , will it try allocating  a
> different port ?
> Please let me know, we need this information  because when our
> application is on the production machine , we do not have a control as
> to which ports are available.
> thanks,
> Suchitha

If you're talking about random local ports like the ones used for JMX
(RMI), the OS selects them.  You can't bind two sockets to the same
address-port pair.  If it was the case that something didn't check if a
port was already in use, and it was, it wouldn't even work.

Christopher G. Stach II

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