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| Question on MQSeries Listeners ... |
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| tkaravind |
 Posted: Fri Mar 05, 2004 5:57 am Post subject: Question on MQSeries Listeners ... |
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Acolyte
Joined: 24 Jul 2001
Posts: 62
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Dear All,
I have always had this question on MQSeries listeners.
We start the Listeners using MQSeries Services (on Windows servers) panel for different queue managers.
However the real users of these listeners i.e the Sender channels connecting from elsewhere never specify the Queue Manager name but only the Hostname & Port !!!
Is this design consistent ? I mean should the listener be Queue Manager specific ?
Can listeners be grouped under a different category instead of Queue Managers ???
Regards,
Aravind |
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| JasonE |
| Posted: Fri Mar 05, 2004 8:00 am Post subject: |
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Grand Master
Joined: 03 Nov 2003
Posts: 1220
Location: Hursley
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| The listener is qmgr specific. When launched from the gui. -m QM is in the command line. This means it connects to that specific qmgr. So someone connecting on that port will connect just to that qmgr, regardless of how many other qmgrs are on the box, and then we look at the inbound request for a channel name, and find it in the list of channel definitions. If you have connected to the wrong, but valid, port then either the channel lookup will fail with not found, or it will connect fine. With a client connection, depending on how you have connected, a check is also made on the returned qmgr name to confirm it matches what you were trying to connect to. |
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| tkaravind |
| Posted: Sat Mar 06, 2004 2:07 am Post subject: |
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Acolyte
Joined: 24 Jul 2001
Posts: 62
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Thanks a lot Jason.
If I have two queue managers both having listener on the same port then which port does the incoming channel process connect to ?
Can I assume it will be to the first listener that was started ?
Offcourse both queue managers will have the required channel definitions so the lookup does not fail.
Regards,
Aravind |
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| Michael Dag |
| Posted: Sat Mar 06, 2004 2:14 am Post subject: |
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Jedi Knight
Joined: 13 Jun 2002
Posts: 2607
Location: The Netherlands (Amsterdam)
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| tkaravind wrote: |
If I have two queue managers both having listener on the same port then which port does the incoming channel process connect to ?
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You can't have two queuemanagers listening on the same port!
The first listener will bind to the port, the second will fail with a bind failure.
_________________
Michael
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