I know it's an old r24762 version, but maybe it is interesting.
Out of the blue, my shadow-session disconnected:
"Xpra-Python3-x86_64_4.0-r24762\xpra_cmd" shadow ssh://user@ip/0 --opengl=no --desktop-scaling=0.75 --min-speed=70 --webcam=no --speaker=off --microphone=off --pulseaudio=no 2020-02-11 21:56:05,024 Xpra GTK3 client version 4.0-r24762 64-bit 2020-02-11 21:56:05,028 running on Microsoft Windows 10 2020-02-11 21:56:05,088 Warning: failed to import opencv: 2020-02-11 21:56:05,088 No module named 'cv2' 2020-02-11 21:56:05,088 webcam forwarding is disabled 2020-02-11 21:56:05,877 GStreamer version 1.16.2 for Python 3.8.0 64-bit 2020-02-11 21:56:06,425 OpenGL_accelerate module loaded 2020-02-11 21:56:06,509 Using accelerated ArrayDatatype 2020-02-11 21:56:07,197 Warning: vendor 'Intel' is greylisted, 2020-02-11 21:56:07,197 you may want to turn off OpenGL if you encounter bugs 2020-02-11 21:56:07,533 OpenGL enabled with Intel(R) HD Graphics 4000 2020-02-11 21:56:07,777 keyboard settings: layout=us 2020-02-11 21:56:07,781 desktop size is 1600x900 with 1 screen: 2020-02-11 21:56:07,781 Default (423x238 mm - DPI: 96x96) workarea: 1600x860 2020-02-11 21:56:07,781 (Standard monitor types) Generic PnP Monitor (309x174 mm - DPI: 131x131) 2020-02-11 21:56:11,342 enabled remote logging 2020-02-11 21:56:11,350 Xpra GTK3 X11 server version 3.0.6-r25174 64-bit 2020-02-11 21:56:11,354 running on Linux Ubuntu 16.04 xenial 2020-02-11 21:56:11,374 Attached to 172.16.57.121:22 2020-02-11 21:56:11,378 (press Control-C to detach) [....] 2020-02-11 21:25:54,551 server is not responding, drawing spinners over the windows 2020-02-11 21:25:55,762 Socket exception: An existing connection was forcibly closed by the remote host (10054) 2020-02-11 21:25:56,173 Warning: failed to query SO_DONTROUTE, SO_ERROR, SO_EXCLUSIVEADDRUSE, SO_KEEPALIVE, SO_LINGER, SO_OOBINLINE, SO_RCVBUF, SO_RCVTIMEO, SO_REUSEADDR, SO_SNDBUF, SO_SNDTIMEO, SO_TYPE 2020-02-11 21:25:56,215 Connection lost
And server has nothing to say for it:
65 │ 2020-02-11 21:26:54,854 Warning: remote clipboard request timed out 66 │ 2020-02-11 21:26:54,854 request id 2, selection=CLIPBOARD, target=TARGETS 67 │ 2020-02-11 21:26:58,114 client 1 @44.787 window-close event on desktop or shadow window, disconnecting 68 │ 2020-02-11 21:27:00,836 xpra client 1 disconnected.
but I didn't close the window
Related failure with different error message (and with plink)
Socket exception: An existing connection was forcibly closed by the remote host (10054)
There's nothing we can do about this, that's either from the OS, network or from plink.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2589