Thanks alot that worked, Patch applies fully and the port build with no error. Also tested to make phonecalls and videocalls after updated port version and it works good. I hope the feedback is helpful.

Thanks for advice to try restund, I will have to test it because slowly I have realized complexity of CoTurn is just too much to me.
________________________________________
From: Stuart Henderson <stu@spacehopper.org>
Sent: Sunday, August 16, 2026 10:57 AM
To: Filip Lax
Cc: ports@openbsd.org
Subject: Re: Turnserver pending many security fixes

On 2026/08/15 15:02, Filip Lax wrote:
> Sorry I dont respond fast, and thanks alot for all help.
>
> I make a copy of default CoTurn ports directory (4.9.0-r0) and put whole patch (your newest to 4.16.0-r0) in a file in main directory, Then run "patch -p0 < coturn.patch" and get:
>
> ......
> Patching file patches/patch-src_apps_relay_mainrelay_c using Plan A...
> Hunk #1 succeeded at 1.
> Hunk #2 failed at 12.
> 1 out of 2 hunks failed--saving rejects to patches/patch-src_apps_relay_mainrelay_c.rej
> ......
>
> All rest files in patch succeed. Sorry I dont understand how I can fix it. I attach to the mail the ".rej" file if it helps.

The patch applies correctly, something in the path from your mail client
to the saved file must be mangling it.

You can also fetch it from the marc.info list archive:

ftp -o- 'https://marc.info/?l=openbsd-ports&m=178591986054994&q=mbox'|patch -Ep0