Re: [ros-dev] Open Source Terminal Server

[Timo Kreuzer]

Jan Blomqvist Kinander wrote:
>   Hi Developers, I have been aproached by a certain
> Gonzalo from Colombia, he claims to be a developer who wants to make a Terminal Server
> Clone, I enclose the mail he sent me, please have a look at it and answer him.
>
>  Yours Sincerely,
>  Jaix Bly
>     
I'll reply here.
>   I want to develop a Open Source Terminal Server based
> in something like VNC and OpenVPN
>
>  Opening many sessions in windows is really bad idea ... for kernel stuff and another
> csrss, smss problems ... terminal server blue screen, black screen, printers, etc ... so i
> have an idea for a workaround ...
>
>
>  Is open a session using createwinstation api ... in that session, create multiples
> desktops, using createdesktop api, in each desktop will be secure shell replacement,
> ejecuted using x user credentials (runas) ... the printing is gonna be universal virtual
> printers that receive the buffer from the win32, and send the emf or pdf to the client
> ...
>     
By design, each session can only have one interactive WindowStation,
that is only one WindowStation with keyboard and mouse input. And I
don't see a possibility to work around this limit. It would also limit
resources, such as number of gdi objects. There's a good reason for
sessions as they are, if you see problems in the current NT
implementation, please specify.

>   Using Virtual Channels is a pain in the ass ...
> because they all travel using only one tcp socket ... (really bad idea) so, problems with
> video, audio, performance, etc ...i think we can use openvpn to connect to only one port
> (443 to ssl vpn) and after the vpn is connected, we can open many socket (each service)
> between the client and the server desktop ... so we can send printing, sound, video, etc
> ...
>     
Remember that ReactOS aims at compatibility with Windows. A terminal
server must be compatible to Windows terminal services.

>  
>  I have many things already developed ... createwinstation, createdesktop, impersonate
> users, universal printer, openvpn implementation .. etc ... but i need help in other
> areas, like the video grabber in the desktop (maybe a modified vnc) i can make a
> printscreen of each desktop, and send the jpg ... and is working, but is a really bad idea
> ...
>
>
>  This product can merge with ReactOS .. and be the ReactOS terminal server ...
>
>  https://sourceforge.net/projects/oswts/
>
>  What do you think?
>
>  Do you receive this mail?
>
>
>  Thanks, 
>
>  Gonzalo.
>
>