From: Vasilij Schneidermann <mail@vasilij.de>
To: Robert Pluim <rpluim@gmail.com>
Cc: 62990@debbugs.gnu.org
Subject: bug#62990: 30.0.50; UDP server closes connection upon receiving an empty packet
Date: Mon, 24 Apr 2023 23:04:34 +0200 [thread overview]
Message-ID: <ZEbu4vdQTvaNBcXD@odonien> (raw)
In-Reply-To: <87wn21br45.fsf@gmail.com>
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> Empty TCP messages are perfectly valid, but they should be hidden from
> you. recvfrom returning 0 means the connection has been closed, but
> thatʼs a separate thing.
I suspect there's a missing ifdef in the code which ends up terminating
the process on such a condition, for both TCP and UDP.
> Could you show how youʼre generating the empty packets?
Download the attachments from my previous email, launch the server with
`emacs --batch -l bug-server.el`, then the client with `guile
fixed-client.scm`. Swap out the server with `guile fixed-server.scm`.
> Itʼs allowed by the protocol. I guess it could be useful for people
> wanting to implement their own keep-alive protocol over UDP.
I think so as well.
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next prev parent reply other threads:[~2023-04-24 21:04 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-21 10:36 bug#62990: 30.0.50; UDP server closes connection upon receiving an empty packet Vasilij Schneidermann
2023-04-24 8:51 ` Robert Pluim
2023-04-24 21:04 ` Vasilij Schneidermann [this message]
2023-04-25 8:07 ` Robert Pluim
2023-04-26 9:14 ` Robert Pluim
2023-04-26 10:30 ` Eli Zaretskii
2023-04-26 10:35 ` Robert Pluim
2023-04-26 10:38 ` Eli Zaretskii
2023-04-26 11:47 ` Robert Pluim
2023-04-26 12:24 ` Eli Zaretskii
2023-04-26 14:27 ` Robert Pluim
2023-04-26 10:58 ` Vasilij Schneidermann
2023-04-26 10:56 ` Vasilij Schneidermann
2023-04-26 11:50 ` Robert Pluim
2023-04-26 14:31 ` Robert Pluim
2024-03-09 13:40 ` Vasilij Schneidermann
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