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From: Eric Wong <normalperson@yhbt.net>
To: kgio@librelist.com
Subject: Re: kgio_trywrite raises "Broken pipe - send (Errno::EPIPE)"
Date: Tue, 10 Apr 2012 20:15:50 +0000	[thread overview]
Message-ID: <20120410201550.GC25426@dcvr.yhbt.net> (raw)
In-Reply-To: CALiegfmQArNQ7cYDU5aE5iATNgtzz7gQaJjuASZnEnfjp=RyRQ@mail.gmail.com

Iñaki Baz Castillo <ibc@aliax.net> wrote:
> Hi, I've realized that in certain cases Kgio::TCPSocket#kgio_trywrite
> raises a "Broken pipe - send (Errno::EPIPE)" exception.

EPIPE means the reader got closed or died somehow.  EPIPE is uncommon
in normal use, but it is fatal and not possible to recover from (unlike
EAGAIN).

kgio already skips the expensive backtrace generation for
EPIPE/ECONNRESET since there's nothing the programmer can do about it in
non-buggy code, though.  (An attacker can trigger EPIPE/ECONNRESET,
though, so this adds a _small_ amount of DoS protection)

  parent reply	other threads:[~2012-04-10 20:16 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-09 23:00 kgio_trywrite raises "Broken pipe - send (Errno::EPIPE)" Iñaki Baz Castillo
2012-04-09 23:22 ` Iñaki Baz Castillo
2012-04-10 20:15 ` Eric Wong [this message]
2012-04-10 20:56   ` Iñaki Baz Castillo

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