The "Xpra Proxy Instance ..." processes not closing correctly.

[Vssblt]

What happened

Hi, xpra is great, but I ran into some difficulties.

The processes Xpra Proxy Instance for unix-domain socket: <- /run/user/1001/xpra/d479337cfa05-1040 not exit when xpra exit.
Xpra Proxy Instance was created when xpra start started, and Xpra Proxy Instance never exit, they take up a lot of memory resources. How to fix it? Thanks.

Here is ps aux | grep xpra -i partial result:

msun         343  0.8  0.3 24024472 464344 ?     Sl   04:00   6:27 /usr/bin/python3 /usr/bin/xpra proxy :20 --daemon=yes --bind-tcp=0.0.0.0:12008 --tcp-auth=allow
msun        1046  0.0  0.0 1372688 26248 ?       Sl   04:03   0:36 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1024
msun        5458  0.0  0.0 1569308 18164 ?       Sl   05:45   0:17 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1025
msun        5798  0.0  0.0 1569320 17296 ?       Sl   05:47   0:15 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1025
msun        7122  0.2  0.0 1569588 23244 ?       Sl   05:49   1:28 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1026
msun        7869  0.0  0.0 1306944 15204 ?       Sl   05:49   0:02 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1027
msun        8390  0.0  0.0 1569612 14684 ?       Sl   05:49   0:15 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1025
msun       22405  0.0  0.0 1569368 13880 ?       Sl   06:50   0:25 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1027
msun       29212  0.2  0.0 1307236 13728 ?       Sl   07:20   1:06 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1024
msun       30589  0.0  0.0 1372784 12936 ?       Sl   07:24   0:00 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1028
msun       32559  0.0  0.0 1438332 13176 ?       Sl   07:31   0:02 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1027
msun       33996  0.0  0.0 1569672 12860 ?       Sl   07:34   0:00 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1027
msun       38546  0.0  0.0 1569684 23924 ?       Sl   07:37   0:09 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1027
msun       39504  0.0  0.0 1569696 13764 ?       Sl   07:37   0:10 Xpra Proxy Instance for unix-domain socket:  <- /run/user/1001/xpra/d479337cfa05-1028
msun       40262 18.1  0.0 2541652 110396 ?      SLl  07:40  92:42 /usr/bin/python3 /usr/bin/xpra start :1029 --tcp-auth=password:value=xxxxxxxxxx --daemon=no --start-child=/xxxxx/xxxxx/xxxx/xxxxxxxxx -s xxxxxxxxxxxx -l  -p  -u  -c 1 -d 1029 -h  -H  -o  --exit-with-children

Information

• xpra version: xpra v4.0.5-r27999
• OS: Ubuntu 20.04
• Python version: 3.8
• ENV: Nvidia-Docker(ubuntu 20.04) + VirtualGL + xpra proxy + xpra start + xpra-html5(for client)
  The xpra proxy and xpra start running in the ubuntu docker container.

xpra proxy command line:

XPRA_CONF_FILENAME=/etc/xpra/xpra_proxy.conf /usr/bin/xpra proxy :20 --daemon=yes --bind-tcp=0.0.0.0:12008 --tcp-auth=allow

xpra start command line:

/usr/bin/python3 /usr/bin/xpra start :1036 --tcp-auth=password:value=************ --daemon=no --start-child="[An Application]"  --exit-with-children

Configuaration file(xpra proxy):

tcp-auth=allow
bandwidth-limit=100000m 
opengl=yes 
speaker=off
encoding=jpg
notifications=no 
system-tray=no 
webcam=no 
mousewheel=on 
#min-speed=99 
min-quality=88
auto-refresh-delay=0 
title="XXXXXXXXXXXXXX" 
mdns=no 
exit-with-children=yes 
video-scaling=off
exec-wrapper=/mnt/tmpfs/vglrun/vglrun -d :5 --
env=XPRA_CLOSE_GTK_DISPLAY=0 XDG_RUNTIME_DIR=/tmp XPRA_MOUSE_DELAY=1 XPRA_XDG_EXPORT_ICONS=0 GDK_BACKEND=x11 NO_AT_BRIDGE=1 XPRA_XDG_LOAD_GLOB=0 XPRA_UINPUT=0 XPRA_MENU_ICONS=0 XPRA_ICON_OVERLAY=0 XPRA_EXPORT_ICON_DATA=0 XPRA_EXPORT_XDG_MENU_DATA=0
sharing=no
no-printing
printing=no
file-size-limit=10000M

Configuaration file(xpra start):

tcp-auth=allow
bandwidth-limit=100000m
opengl=yes
speaker=off
encoding=jpg
notifications=no
system-tray=no
webcam=no
mousewheel=on
min-speed=99
min-quality=88
auto-refresh-delay=0
title="XXXXXXXXXXXX"
mdns=no
exit-with-children=yes
video-scaling=off
exec-wrapper=/opt/VirtualGL/bin/vglrun -d :5 --
env=XPRA_CLOSE_GTK_DISPLAY=0 XDG_RUNTIME_DIR=/tmp XPRA_MOUSE_DELAY=1 XPRA_XDG_EXPORT_ICONS=0 GDK_BACKEND=x11 NO_AT_BRIDGE=1 XPRA_XDG_LOAD_GLOB=0 XPRA_UINPUT=0 XPRA_MENU_ICONS=0 XPRA_ICON_OVERLAY=0 XPRA_EXPORT_ICON_DATA=0 XPRA_EXPORT_XDG_MENU_DATA=0
sharing=yes
no-printing
printing=no
server-idle-timeout=30
idle-timeout=10800
terminate-children=yes
file-size-limit=10000000
clipboard=default

[totaam]

xpra version: xpra v4.0.5-r27999

This version is not supported. Try an up to date version.

You may be able to get more details by running the proxy with -d proxy.
The server should send a message to the proxy when it terminates, which should take care of exiting the proxy instance.

---

A lot of your settings are nonsensical: no-printing, printing=no
ie this has zero effect on the proxy: mousewheel=on
And this is the wrong spelling, whilst also being a bad idea: encoding=jpg
Does this even work? env=XPRA_CLOSE_GTK_DISPLAY=0 XDG_RUNTIME...
etc...

[Vssblt]

Thanks for the reply, I solve this issue using newer version xpra v4.2.2-r0.

[totaam]

This is a common issue with the Ubuntu packages:
https://github.com/Xpra-org/xpra/wiki/Distribution-Packages-Ubuntu

FYI: at time of writing, the current version for Ubuntu 20.04 is xpra 4.2.3