[Parti-discuss] Rootless NX

[Antoine Martin]

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Hi Lars,

lars hofhansl wrote:
> I have since discovered that NX can be used in root less mode as well, and that all of the complexity of FreeNX (or NoMachines server)
> and NX client, and the cumbersome authentication (nx user and then the real user) is not needed to use NX.
> 
> All one has to do it start
>   nxagent -display nx/nx,link=wan,...:port :port -R
> on the remote (client) machine, and
>   nxproxy -S machine:port
> on the local (server) machine. If you want secure communication just use SSH to establish a tunnel (display port + 4000 is used by NX),
> and use localhost:port on the local server.
> 
> No FreeNX, nxclient, public key huh hah, or anything additional indeed is needed.
I was really hoping that this would work... As I've given up before on
figuring out the madness that goes on in nxserver.

Unfortunately, -display is not allowed with nxagent:
Error: Aborting session with 'Unable to open display 'nx/nx,link=wan''.

So the best I can do is this:
nxagent -geometry 1024x768 -terminate :250 -R
nxproxy -S 127.0.0.1:2250

But then nxclient complains about wrong authentication...
So I'm stuck. Any ideas?

> nxagent acts as an X server (just like Xvfb, Xnest, or Xvnc), and any X application can then be used on the remote machine using the given display port.
> 
> That is all that is needed to park and forward windows just like with Xpra. A little bit trickery is needed to handle nxagents 
> resume/suspend logic, but on the oher hand that allows changing encoding/caching behavior between suspend/resume cycles.
Any chance you could expand on that?

I once wrote a client based on nxcl, and that was just as flaky as the
rest... Resume kinda worked - most of the time!

Cheers
Antoine

> Anyway, this is not to diminish the ingenuity of Xpra. I just found that using NX this way (with a bunch of simple bash scripts to set the SSH tunnel),
> is just as simple as Xpra, windows-aware as well, and performs (honestly) far better over low bandwidth links. 
> 
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