linux-kernel - Re: [PATCH] ip.7: Add not supported by SOCK

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Message-ID: <20240317123135.24993051@gmx.net>
Date: Sun, 17 Mar 2024 12:31:35 +0100
From: Peter Seiderer <ps.report@....net>
To: Alejandro Colomar <alx@...nel.org>
Cc: Oliver Crumrine <ozlinuxc@...il.com>, linux-kernel@...r.kernel.org,
 linux-man@...r.kernel.org
Subject: Re: [PATCH] ip.7: Add not supported by SOCK_STREAM to socket
 options

On Wed, 6 Mar 2024 14:12:23 +0100, Alejandro Colomar <alx@...nel.org> wrote:

> On Wed, Mar 06, 2024 at 08:02:10AM -0500, Oliver Crumrine wrote:
> > Hi Alex,
>
> Hi Oliver,
>
> > Type into netcat, not the program I sent.
> > My program is the server and prints out whatever it recieves,
> > along with some other stuff that lets you know which options
> > are supported.
>
> Nothing either.
>
> $ date; nc localhost 8888 -u | ts
> Wed Mar  6 14:09:38 CET 2024
> foo
> $ echo $?
> 0

Same here, but with nc forced to IPv4

	$ nc localhost 8888  -u -4
	a

And in the other window:

	$ ./a.out
cmsg recieved
data read: a
byte = 02

Regards,
Peter

>
>
> $ cc testDgramSocketServer.c
> $ date; ./a.out | ts
> Wed Mar  6 14:09:05 CET 2024
> ^C
> $
>
>
> Have a lovely day!
> Alex
>