From: karl@aspodata.se
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] How to generate broadcast TFTP read request?
Date: Fri, 8 Nov 2024 09:54:42 +0100 (CET) [thread overview]
Message-ID: <20241108085442.C48E785CA0F1@turkos.aspodata.se> (raw)
In-Reply-To: <vgivit$t30$1@ciao.gmane.io>
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
Theese might help:
https://www.abc.se/~m6695/udp.html
https://people.cs.rutgers.edu/~pxk/417/notes/sockets/udp.html
https://users.cs.jmu.edu/bernstdh/web/common/lectures/summary_unix_udp.php
Regards,
/Karl Hammar
next prev parent reply other threads:[~2024-11-08 8:55 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 [this message]
2024-11-08 13:59 ` [gentoo-user] " Grant Edwards
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