As far as possible, use of the X11 display number is kept to
X11-specific routines. This is to make it easier to restructure
the code to add non-X11 display support.
the N policy in sesman.ini, allowing xrdp sessions to be tagged with an
instance name to enable persistent association with a specific
xrdp instance, to allow experiences where users reconnect to specific
sessions based on e.g. the xrdp listening port used.
This allows sesman to detect failed sessions before it tells xrdp
that all is OK with the session. This is a fairly common failure mode
which can now be reported on the login screen.
env.c : The value of XRDP_SESSION in the environment is now set to the
PID of the sesexec process, which ties up the session with the
output of "xrdp-sesadmin -c=list".
Later versions of xrdp-sesadmin can use this value to get
information about the current process.
matt335672