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Re: server-side Socket does not recognize broken connection.

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From Martin Gregorie <martin@mydomain.invalid>
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Subject Re: server-side Socket does not recognize broken connection.
Date Wed, 29 May 2019 16:06:13 +0000 (UTC)
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On Wed, 29 May 2019 14:50:14 +0000, Andreas Leitgeb wrote:

> Watching the Java server with strace (on linux), I see that Java calls
> the system:
>   ioctl(6, FIONREAD, [0])     = 0
> 
> Now I'm going to read up on why this syscall wouldn't report a broken
> socket, and what other syscall (short of actually reading and risking
> to block) would allow me to tell idle from broken.
> 
A quick look at the man pages for ioctl(2) and ioctl_list(2) didn't tell 
me a lot.

It seems to me that Eric's suggestion of using a blocking read to fill a 
queue and driving your mail processing loop off that is most likely the 
way to go.


-- 
Martin    | martin at
Gregorie  | gregorie dot org

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Thread

server-side Socket does not recognize broken connection. Andreas Leitgeb <avl@logic.at> - 2019-05-29 11:03 +0000
  Re: server-side Socket does not recognize broken connection. Eric Sosman <esosman@comcast-dot-net.invalid> - 2019-05-29 08:30 -0400
  Re: server-side Socket does not recognize broken connection. Joerg Meier <joergmmeier@arcor.de> - 2019-05-29 14:58 +0200
    Re: server-side Socket does not recognize broken connection. Andreas Leitgeb <avl@logic.at> - 2019-05-29 14:50 +0000
      Re: server-side Socket does not recognize broken connection. Eric Douglas <e.d.programmer@gmail.com> - 2019-05-29 08:22 -0700
        Re: server-side Socket does not recognize broken connection. Andreas Leitgeb <avl@logic.at> - 2020-01-30 15:22 +0000
      Re: server-side Socket does not recognize broken connection. Martin Gregorie <martin@mydomain.invalid> - 2019-05-29 16:06 +0000
  Re: server-side Socket does not recognize broken connection. Eric Douglas <e.d.programmer@gmail.com> - 2019-05-29 07:14 -0700
  Re: server-side Socket does not recognize broken connection. trisha guillot <guillottrisha347@gmail.com> - 2019-05-31 20:13 -0700
  Re: server-side Socket does not recognize broken connection. Marcel Mueller <news.5.maazl@spamgourmet.org> - 2019-06-01 16:08 +0200

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