Re: [FreeRDP-devel] Headless X11 RDP client - alternative to virtual X server

[David F. <co...@ha...>]

Le 25/10/2021 à 22:47, Diego Carmona via FreeRDP-devel a écrit :
> Hi everyone.
>
> We require an RDP client to run in a headless environment and process the
> screen's contents, but the idea was for it to rely on FreeRDP to actually
> handle most of the heavy work regarding parsing the protocol and using X11
> to create and maintain the framebuffer. As such, instead of basing this
> work in the sample client, it was based on the X11 client in the project.
> The screen itself isn't needed per-se, we just want a simple way to do some
> work on the framebuffer's contents as the session goes along.
>
> However, since the client is running on a headless environment, it's got no
> $DISPLAY, and as such, the X approach won't work as simply as I thought.
>
> I'm aware that running a virtual X server is probably the way to go, but I
> wanted to put this out there just in case there's a simple known way to
> avoid that.
>
> Thanks for your help,
>
Well I really think you should have taken the sample client as an 
example and do the framebuffer stuff yourself. Writing a RDP client 
using FreeRDP libs is not that complicated, and you have plenty of 
examples in the clients directory (you can also have a look at remmina).

Even if you use a virtual X environment with xfreerdp, you may hit the 
bug that some virtual X don't support all the X11 extension that we require.

Best regards.

-- 
David FORT
website: https://www.hardening-consulting.com/