[X2Go-Dev] Bug#1228: Ctrl-Alt-T doesn't terminate connection in "local desktop" sessions

[Alexey Nemov]

Package: x2goserver
Version: 4.0.1.20


Summary:
As stated in the wiki https://wiki.x2go.org/doku.php/wiki:advanced:nx-keyboard-shortcuts
The action "close_session" should terminate the session.
But, pressing Ctrl-Alt-t in a "local desktop" session does not "terminate" the session.


Steps to reproduce:
0. Create a new session profile in x2goclient with session type "Connect to local desktop";
1. Connect to remote computer using this session profile;
2. Press Ctrl-Alt-t at the client.

Expected behaviour:
The remote desktop window on the client should close, the connection should be terminated.

Actual behaviour:
The remote desktop window on the client does not close, the connection is not terminated.
The following log entries appears in the server's system journal:

```
Oct 26 13:50:39 localhost /usr/bin/x2gosuspend-session[31790]: session with ID alex-50-1508997021_stS1XSHADalexXSHADPP0_dp24 has been suspended successfully
Oct 26 13:50:45 localhost su[31900]: Successful su for alex by root
Oct 26 13:50:45 localhost su[31900]: + ??? root:alex
Oct 26 13:50:45 localhost su[31900]: pam_unix(su:session): session opened for user alex by (uid=0)
Oct 26 13:50:45 localhost systemd-logind[508]: New session c99 of user alex.
Oct 26 13:50:45 localhost systemd[1]: Started Session c99 of user alex.
Oct 26 13:50:46 localhost su[31900]: pam_unix(su:session): session closed for user alex
Oct 26 13:50:46 localhost su[31923]: Successful su for alex by root
Oct 26 13:50:46 localhost su[31923]: + ??? root:alex
Oct 26 13:50:46 localhost su[31923]: pam_unix(su:session): session opened for user alex by (uid=0)
Oct 26 13:50:46 localhost systemd-logind[508]: Removed session c99.
Oct 26 13:50:46 localhost systemd-logind[508]: New session c100 of user alex.
Oct 26 13:50:46 localhost systemd[1]: Started Session c100 of user alex.
Oct 26 13:50:49 localhost /usr/bin/x2gosuspend-session[32026]: session with ID alex-50-1508997021_stS1XSHADalexXSHADPP0_dp24 has been suspended successfully
Oct 26 13:50:50 localhost su[31923]: pam_unix(su:session): session closed for user alex
Oct 26 13:50:50 localhost systemd-logind[508]: Removed session c100.
Oct 26 13:50:53 localhost /usr/sbin/x2gocleansessions[12745]: alex-50-1508997021_stS1XSHADalexXSHADPP0_dp24: session status S desynchronized with current status (R) and session suspend already tried unsuccessfully
```


Other infomation:
0. Executing x2gosuspend-session <ID> on the server has the same effect as pressing C-A-t at the client.
1. Execuitng x2goterminate-session <ID> on the server does terminates the session and closes the client window.
3. Server-side /etc/x2go/keystrokes.cfg: http://paste.debian.net/plain/992795



-- System Information (server and client):
Debian Release: 9.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)