[winswitch] Connecting to Windows Server Container

Mukul Agrawal mukulagrawal78 at yahoo.com
Mon May 20 18:39:19 BST 2019

Just to clarify, I am ok exposing entire windows desktop. I am not looking for seamless mode.
I just need a way to see graphics generated inside containers.  If container graphics can popup in host and then I can expose entire host desktop to temote client then that works for me.
Alternatively, what if I run xpra server inside container? Would I be able expose entire desktop of container?

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  On Mon, May 20, 2019 at 7:52 AM, Antoine Martin<antoine at nagafix.co.uk> wrote:   On 20/05/2019 07:59, Mukul Agrawal wrote:
> The application running inside Windows Server Container is a regular
> microsoft windows application.
> I am guessing it is not an X11 application because I didnt have to
> install any x server. It works natively on MS windows machines.
Then you won't be able to use xpra to expose it individually.
> I have played with XPRA on linux systems and linux container a little
> bit and I can get those to work.
> I was wondering if: (1) you have a distribution of xpra server that can
> run on microsoft windows host machines
The regular xpra builds for MS Windows support running servers, but
those servers are just shadow servers: it allows you to access the whole
desktop all at once, not individual windows separately.
> and if it does then (2) if it is
> possible to for a windows server container running on that host to send
> its graphics to the xpra server running on host (or running on sister
> container) instead of running inside container.    
No. MS Windows applications know nothing about X11.

This question comes up regularly: it should be possible to improve xpra
to support seamless mode on MS Windows. But this would take a serious
amount of work.


> From your answer, it looks like (2) may be possible. So main question is
> if you have a MS windows version of xpra server?
> Regards, Mukul ( https://sites.google.com/site/mukulagrawal )
> On Sunday, May 19, 2019, 10:16:22 AM PDT, Antoine Martin via
> shifter-users <shifter-users at lists.devloop.org.uk> wrote:
> On 19/05/2019 20:43, Mukul Agrawal via shifter-users wrote:
>> Dear XPRA team,
>> I have an application running on Windows Server container.Can I get
> the graphics generated in the container to a remote client using novnc ?
> I will assume you mean xpra here.
> What sort of graphics? This an X11 application, right?
>> I can control how to start the container but prefer not to install
> anything inside container.I can install anything required on host that
> is running the container.
> I'm not 100% certain I understand what you're trying to do, but if you
> cannot install xpra in the container whose applications you are trying
> to expose, you can install xpra in another container and then start your
> applications on the display started by the xpra server there. ie:
> DISPLAY=xpraserverIP:DISPLAYNO yourapp
> You will need to allow TCP connections to your X11 server, see xhost and
> remove "-nolisten tcp" from xpra's default xvfb command.
> If you don't want to expose the X11 display over plain TCP, you can use
> ssh display forwarding between the two containers.
> In any case, there are benefits to this approach: you can really isolate
> your application by running it in a container with very limited network
> access.
> Cheers,
> Antoine
>> Any pointers are appreciated.
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