Connection with ssh ok -> xpra start with ssh fails AND connexion via tcp fails

[mbdv8959]

Connection with ssh ok -> xpra start with ssh fails AND connexion via tcp fails

Hi,
I need some help.
I have two servers (s1-8-gra7 and s1-2-gra7) with debian.
I installed xpra 4.4.4 on both.

debian@s1-8-gra7:~$ xpra version
4.4.4-r0

debian@s1-2-gra7:~$ xpra version
Warning: using '/run/user/1000' as XDG_RUNTIME_DIR
4.4.3-r0

From s1-8-gra7 i can connect with ssh on s1-2-gra7.

debian@s1-8-gra7:~$ ssh [email protected]
Linux s1-2-gra7 5.10.0-21-cloud-amd64 #1 SMP Debian 5.10.162-1 (2023-01-21) x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue Mar 14 15:45:24 2023 from 83.114.59.243
debian@s1-2-gra7:~$ exit
logout
Connection to 162.19.24.10 closed.

When i try to connect via ssh it failed.

debian@s1-8-gra7:~$ xpra start ssh://[email protected]/ --start=xterm
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
2023-03-14 15:55:36,484 Warning: cannot inject GTK CSS overrides
2023-03-14 15:55:36,484  no default screen
Unable to init server: Could not connect: Connection refused
2023-03-14 15:55:36,491 Xpra GTK3 client version 4.4.4-r0 64-bit
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
failed to initialize Gtk, no display?
2023-03-14 15:55:36,551  running on Linux Debian 10 buster
2023-03-14 15:55:36,975 GStreamer version 1.14.4
2023-03-14 15:55:36,987 Warning: failed to load the GTK3 notification class
2023-03-14 15:55:36,987  Namespace Notify not available
2023-03-14 15:55:36,988 failed to instantiate the dbus notification handler:
2023-03-14 15:55:36,988  you may need to start a notification service for 'org.freedesktop.Notifications'
2023-03-14 15:55:36,988  disable notifications to avoid this warning
2023-03-14 15:55:36,989 make_instance([<function DBUS_Notifier_factory at 0x7f8b79875d08>, <class 'xpra.gtk_common.gtk_notifier.GTK_Notifier'>], (<bound method NotificationClient.notification_closed of gtk3.client>, <bound method NotificationClient.notification_action of gtk3.client>))
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/xpra/util.py", line 237, in make_instance
    v = c(*args)
  File "/usr/lib/python3/dist-packages/xpra/gtk_common/gtk_notifier.py", line 81, in __init__
    n = display.get_n_monitors()
AttributeError: 'NoneType' object has no attribute 'get_n_monitors'
2023-03-14 15:55:36,989 Error: cannot instantiate <class 'xpra.gtk_common.gtk_notifier.GTK_Notifier'>:
2023-03-14 15:55:36,989  with arguments (<bound method NotificationClient.notification_closed of gtk3.client>, <bound method NotificationClient.notification_action of gtk3.client>)
2023-03-14 15:55:36,991 created unix domain socket '/run/user/1000/xpra/clients/s1-8-gra7-22122'
2023-03-14 15:55:37,064 Error: failed to load posix keyboard bindings
2023-03-14 15:55:37,064  cannot load X11 bindings with wayland under python3 / GTK3
2023-03-14 15:55:37,255 keyboard bindings are not available
2023-03-14 15:55:37,256  expect keyboard mapping problems
2023-03-14 15:55:37,288 Connected (version 2.0, client OpenSSH_8.4p1)
/usr/lib/python3/dist-packages/paramiko/kex_ecdh_nist.py:39: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
  m.add_string(self.Q_C.public_numbers().encode_point())
/usr/lib/python3/dist-packages/paramiko/kex_ecdh_nist.py:96: CryptographyDeprecationWarning: Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_point
  self.curve, Q_S_bytes
/usr/lib/python3/dist-packages/paramiko/kex_ecdh_nist.py:111: CryptographyDeprecationWarning: encode_point has been deprecated on EllipticCurvePublicNumbers and will be removed in a future version. Please use EllipticCurvePublicKey.public_bytes to obtain both compressed and uncompressed point encoding.
  hm.add_string(self.Q_C.public_numbers().encode_point())
/usr/lib/python3/dist-packages/paramiko/ecdsakey.py:164: CryptographyDeprecationWarning: Support for unsafe construction of public numbers from encoded data will be removed in a future version. Please use EllipticCurvePublicKey.from_encoded_point
  self.ecdsa_curve.curve_class(), pointinfo
2023-03-14 15:55:37,390 Warning: unknown ed25519 SSH host key
Unknown SSH host '162.19.24.10'

---

i try with attach

i start xpra on s1-2-gra7

pccastor@s1-2-gra7:/home/debian$ xpra start-desktop --bind-ws=0.0.0.0:12500   --html=on --start=startlxqt
pccastor@s1-2-gra7:/home/debian$ 2023-03-14 17:24:43,660 Warning: failed to create script directory '/run/user/1000/xpra':
2023-03-14 17:24:43,661  [Errno 13] Permission denied: '/run/user/1000/xpra'
2023-03-14 17:24:43,663  ($XDG_RUNTIME_DIR has not been created?)
Entering daemon mode; any further errors will be reported to:
  '/tmp/S115040/server.log'
Actual display used: :0
Actual log file name is now: '/run/user/1000/xpra/0/server.log'

i use attach on s1-8-gra7

debian@s1-8-gra7:~$ xpra attach ssh:162.19.24.10
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
Unable to init server: Could not connect: Connection refused
failed to initialize Gtk, no display?

However The port 12500 is open and listening

debian@s1-8-gra7:~$ nc -vvv -w 10 -z 162.19.24.10 12500
162.19.24.10: inverse host lookup failed: Unknown host
(UNKNOWN) [162.19.24.10] 12500 (?) open
 sent 0, rcvd 0
debian@s1-8-gra7:~$

Where is the problem ?
Thank you for your help.
Matthieu

[totaam]

Wow, that was an ugly wall of text - now reformatted.

xpra version

This gives you the version of a running session.
Use xpra --version to get the version installed.

Linux Debian 10 buster
(..)
AttributeError: 'NoneType' object has no attribute 'get_n_monitors'

This function has been present for many years.
https://lazka.github.io/pgi-docs/Gdk-3.0/classes/Display.html#Gdk.Display.get_n_monitors
Please use a newer distro.

xpra attach ssh:162.19.24.10

OK, I guess. It's your IP... in a public log now.

Unable to init server: Could not connect: Connection refused`

Something is not configured properly on this system.

failed to initialize Gtk, no display?

The xpra client requires a display to run on and you must have ran this command from an invalid context.
(ie: missing DISPLAY)

However The port 12500 is open and listening

No idea why you're talking about this port number now.
It isn't mentioned anywhere in your wall of text before.

My guess is that your distro is too old.
Things may work better if you use --ssh=ssh -v --debug ssh