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| Stopping listener - effect on existing connections |
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| zpat |
 Posted: Tue Jun 02, 2020 8:53 am Post subject: Stopping listener - effect on existing connections |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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Is it correct to say that stopping a listener will not cause any established channel connections to drop, but just prevent new ones on that port?
(MQ 7.1 on z/OS using a Group listener)
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Well, I don't think there is any question about it. It can only be attributable to human error. This sort of thing has cropped up before, and it has always been due to human error. |
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| Vitor |
| Posted: Tue Jun 02, 2020 9:19 am Post subject: Re: Stopping listener - effect on existing connections |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| zpat wrote: |
Is it correct to say that stopping a listener will not cause any established channel connections to drop, but just prevent new ones on that port?
(MQ 7.1 on z/OS using a Group listener) |
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Honesty is the best policy.
Insanity is the best defence. |
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| zpat |
| Posted: Tue Jun 02, 2020 12:48 pm Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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Excellent. Thanks.
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Well, I don't think there is any question about it. It can only be attributable to human error. This sort of thing has cropped up before, and it has always been due to human error. |
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| gbaddeley |
| Posted: Tue Jun 02, 2020 3:42 pm Post subject: Re: Stopping listener - effect on existing connections |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| zpat wrote: |
| Is it correct to say that stopping a listener will not cause any established channel connections to drop, but just prevent new ones on that port? (MQ 7.1 on z/OS using a Group listener) |
Yes, but strictly speaking, after a TCP socket connection has been established, the end points negotiate a separate port, and there is no further reference to the listener port. ie. Even blocking the port in a firewall will not affect established connections or the ability to stop them.
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Glenn |
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