From: Florian Westphal <fw@strlen.de>
To: Antonio Ojea <antonio.ojea.garcia@gmail.com>
Cc: Florian Westphal <fw@strlen.de>, netfilter@vger.kernel.org
Subject: Re: netfilter expected behavior for established connections
Date: Wed, 12 Mar 2025 19:20:21 +0100 [thread overview]
Message-ID: <20250312182021.GA3007@breakpoint.cc> (raw)
In-Reply-To: <CABhP=ta1mct0M37VvT5_HA-oQdJ5s8LCRL4AF=Mb=TzZS=0F0Q@mail.gmail.com>
Antonio Ojea <antonio.ojea.garcia@gmail.com> wrote:
> heh, I got bitten for that too, that is why I have
>
> echo PING >&3 && read line <&3
>
> the moment that you read it from the fd, it does not come back to the
> socket and you break the loop.
AFAIU the read could happen before socat managed to read from
the pipe (so nothing is sent over network).
Or there could have been several writes over the network,
not just 'exactly one write'.
next prev parent reply other threads:[~2025-03-12 18:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-11 23:56 netfilter expected behavior for established connections Antonio Ojea
2025-03-12 0:30 ` imnozi
2025-03-12 7:11 ` Florian Westphal
2025-03-12 10:55 ` Antonio Ojea
2025-03-12 12:51 ` Florian Westphal
2025-03-12 13:04 ` Antonio Ojea
2025-03-12 14:17 ` Antonio Ojea
2025-03-12 14:25 ` Florian Westphal
2025-03-12 16:13 ` Florian Westphal
2025-03-12 18:02 ` Antonio Ojea
2025-03-12 18:20 ` Florian Westphal [this message]
2025-03-12 18:29 ` Antonio Ojea
2025-03-13 23:23 ` Antonio Ojea
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