[winswitch] OS X Mojave’s XPRA server

[Antoine Martin]

On 07/04/2019 08:20, Stuart Hodges via shifter-users wrote:
> Thanks,
> 
> The results are quite intersting.
> 
> When run as you sugest I got :
> 
> Xpra shadow --bind-tcp=0.0.0.0:14500 --no-daemon
> 2019-04-05 20:50:47,908 closing tcp socket 0.0.0.0:14500
> xpra initialization error:
> 
>   File
> "/Applications/Xpra.app/Contents/Resources/lib/python/xpra/scripts/main.py",
> line 93, in main
>     return run_mode(script_file, err, options, args, mode, defaults)
>   File
> "/Applications/Xpra.app/Contents/Resources/lib/python/xpra/scripts/main.py",
> line 421, in run_mode
>     return run_server(error_cb, options, mode, script_file, args,
> current_display)
>   File
> "/Applications/Xpra.app/Contents/Resources/lib/python/xpra/scripts/server.py",
> line 617, in run_server
>     return do_run_server(error_cb, opts, mode, xpra_file, extra_args,
> desktop_display)
>   File
> "/Applications/Xpra.app/Contents/Resources/lib/python/xpra/scripts/server.py",
> line 1054, in do_run_server
>     no_gtk()
>   File
> "/Applications/Xpra.app/Contents/Resources/lib/python/xpra/scripts/main.py",
> line 1730, in no_gtk
>     assert gtk.ver is None
This looks like a bug.
Try the Python3 / GTK3 builds, those don't seem to have this problem.


> So I played around for a bit with options to work around that and could
> not make it go away so I just temporarily modified the
> /Applications/Xpra.app/Contents/Resources/lib/python/xpra/scripts/main.py putting
> a return in as below to see what would happen :
> 
> def no_gtk():
>     gtk = sys.modules.get("gtk") or sys.modules.get("gi.repository.Gtk")
>     return
I'll take a look at this and try to come up with a more correct fix.

> It now works when run from the command line :
> 
> macserver:tmp schodge$ PYTHONPATH=/Applications/Xpra.app/Contents Xpra
> shadow --bind-tcp=0.0.0.0:14500 --no-daemon
> /Applications/Xpra.app/Contents/Resources/lib/python/xpra/platform/darwin/gui.py:104:
> Warning: invalid cast from 'GtkMenuBar' to 'GtkWindow'
>   osxapp.set_menu_bar(mh.rebuild())
> /Applications/Xpra.app/Contents/Resources/lib/python/xpra/platform/darwin/gui.py:104:
> GtkWarning: gtk_window_add_accel_group: assertion 'GTK_IS_WINDOW
> (window)' failed
>   osxapp.set_menu_bar(mh.rebuild())
> 2019-04-05 20:42:17,004 created unix domain socket:
> /Volumes/external/home/schodge/.xpra/macserver.lan-0
> 2019-04-05 20:42:17,085 serving html content from:
> /Applications/Xpra.app/Contents/Resources/www
> 2019-04-05 20:42:17,109 Error setting up system tray
> Traceback (most recent call last):
>   File
> "/Applications/Xpra.app/Contents/Resources/lib/python/xpra/server/shadow/gtk_shadow_server_base.py",
> line 218, in setup_tray
>     self.tray_menu.append(self.traymenuitem("About Xpra",
> "information.png", None, about))
> AttributeError: 'NoneType' object has no attribute 'append'
Looks like another minor bug, which may prevent the server system tray
control menu from showing up.

> 2019-04-05 20:42:17,637 GStreamer version 1.14.4 for Python 2.7.16 64-bit
> 2019-04-05 20:42:17,692 printer forwarding enabled using postscript
> 2019-04-05 20:42:17,706 xpra GTK2 shadow version 2.5-r22144 64-bit
> 2019-04-05 20:42:17,707  uid=501 (schodge), gid=20 (staff)
> 2019-04-05 20:42:17,707  running with pid 1608 on Mac OS X 10.14.3
> 2019-04-05 20:42:17,707  on display ':0' of size 1920x1080
> 2019-04-05 20:42:17,749 8.0GB of system memory
> 2019-04-05 20:42:17,750 xpra is ready.
> 2019-04-05 20:42:41,359 Handshake complete; enabling connection
> 2019-04-05 20:42:41,401  automatic picture encoding enabled, also
> available:
> 2019-04-05 20:42:41,401   jpeg, png, rgb32, h264
> 2019-04-05 20:42:41,431 HTML5 Mac OSX Firefox client version 2.5
> 2019-04-05 20:42:41,864 shadow server: setting default keymap translation
> 2019-04-05 20:42:41,864  client root window size is 1280x656
> 2019-04-05 20:42:42,070 client got hello: server version 2.5 accepted
> our connection
> 2019-04-05 20:42:42,139 Error: cannot add printer 'HTML5 client':
> 2019-04-05 20:42:42,139  the printing system does not support
> application/pdf
> 2019-04-05 20:42:42,139 client connection_progress( Session started ,  
> ,  100 )
> 2019-04-05 20:42:42,140 client window does not fit in canvas, offsets: 
> -320 -212
> 2019-04-05 20:42:42,141 client startup complete
> 2019-04-05 20:42:42,141 client connection-established
> 
> The performance is not amazing but that could be to do with the old
> server I have running the firefox.
The HTML5 client is always going to be slower than the native one.
On top of that, shadow servers are not particularly efficient.

> It also looks like the MAC version was built without server support:
> 
> Xpra start --bind-tcp=0.0.0.0:14500 --no-daemon
> xpra initialization error:
>  invalid mode 'start'
Seamless mode is not supported on MS Windows or MacOS.

> So I'm not realy sure wheat the next step is.
> 
> I realy want to display back individual windows as opposed to shadowing
> the whole desktop. Was there a reason for the OSX build the start was
> not enabled or should I just build it myself on the Mac ?
In theory, it should be possible to build an X11 based xpra server for
MacOS which would be able to export seamless windows (individual
applications rather than the whole desktop), but this would only work
for X11 based applications and there aren't many of those on MacOS apart
from "xterm", "xeyes" and a few other toy applications.
All the other applications use direct rendering and cannot be
intercepted to be displayed remotely.

> Also my hack of putting the return in is hardly a long term solution :)
Will fix.

Cheers,
Antoine

> 
> Any advice,
> 
> Thanks
> 
> 
> 
> On 04/05/2019 01:29 AM, Antoine Martin via shifter-users wrote:
>> On 05/04/2019 08:23, Stuart Hodges via shifter-users wrote:
>>> Hi,
>>>
>>> I’m trying to use a XPRA server on OS X Mojave. I was unsure if it
>>> would  work at all with OS X not being native X11 but I have XQuartz
>>> running and the documentation seems to suggest it would.
>> Xpra on MacOS does not use X11 at all, so XQuartz is not needed.
>>
>>> I installed the dmg but  the server button is not enabled, the shadow
>>> button is but if I select it I can’t connect although an additional
>>> XPRA process is started.
>> The shadow server should start, but it hasn't been tested on Mojave and
>> I have heard that some new "security" mechanisms may be getting in the
>> way.
>>
>>> I use XPRA on Linux so have some experience.
>>>
>>> Should it work. If so how do I start a server ?
>> The best way would be to install the PKG, if possible, then run the
>> server by hand:
>> Xpra shadow --bind-tcp=0.0.0.0:14500 --no-daemon
>> Keep an eye on that server log output and try to connect with a browser
>> on that port.
>>
>> Cheers,
>> Antoine
>>
>>
>>> Thanks
>>> _______________________________________________
>>> shifter-users mailing list
>>> shifter-users at lists.devloop.org.uk
>>> https://lists.devloop.org.uk/mailman/listinfo/shifter-users
>>>
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> 
> 
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