From: Grant Edwards <grant.b.edwards@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: [gentoo-user] Re: How to generate broadcast TFTP read request?
Date: Fri, 8 Nov 2024 13:59:36 -0000 (UTC) [thread overview]
Message-ID: <vgl5g8$1562$1@ciao.gmane.io> (raw)
In-Reply-To: 20241108085442.C48E785CA0F1@turkos.aspodata.se
On 2024-11-08, karl@aspodata.se <karl@aspodata.se> wrote:
> Grant Edwards:
>> I need to generate a broadcast UDP TFTP read request, and the usual
>> TFTP client tools I use (atftp, tftpy) can't do that. Does anybody
>> have a suggestion for an easy wat to generate such a request?
> ...
>
> Tftp is specified by:
> https://www.rfc-editor.org/rfc/rfc1350.txt
>
> To send datagrams to the broadcast address, you need to
> set SO_BROADCAST in setsockopt(), so unpatched the traditional
> clients won't work. For details see:
> man 7 socket
> man setsockopt
I hacked up a version of tftpy so that it checked the destination
address and set the SO_BROADCAST flag when sending the request. That
did what I needed.
--
Grant
prev parent reply other threads:[~2024-11-08 13:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-07 18:06 [gentoo-user] How to generate broadcast TFTP read request? Grant Edwards
2024-11-08 3:44 ` Alexis
2024-11-08 8:54 ` karl
2024-11-08 13:59 ` Grant Edwards [this message]
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