Hi Terminalguys :)

I already posted this mail to the vnc mailinglist - but I think a posting
here will give me more feedback about this. As far as I can see, the
"roaming Desktop" feature in Thin Computing with Linux is still to be done.
With X itself, we have no option - it would be VERY difficult to implement,
because how should one tell the X-App that the User "moved" from Terminal A
to Terminal B ? Perhaps some sort of "X-Proxy" would be an option - but I
think, the most compromising approach for this, is to enhance VNC for that
purpose.
Please give me feedback,  what you think.
Since i`m sysadmin/sysengineer i`m not very good in programming, but if
there is interest, I would at least try to start and maintain a project,
which aims at giving "session management" (and loadbalancing???...) feature
to VNC.

regards
Roland



----------------

hello!

i`m using a setup of xvnc under inetd and kdm control, so each user can
connect and get`s his own desktop. noone has to "fiddle around" with
dedicated port-numbers, which he has to connect to. this makes the "linux
terminal server alterative" become somewhat realitiy, but unfortunaly, we
loose the "preserve session state"-feature of vnc here, because each time
the user closes vncviewer, the serving xvnc process dies.
see very good docs at:
http://www.sourcecodecorner.com/articles/vnc/linux.asp

I wonder, if there is anybody around, thinking of implementing a layer of
"session management" into vnc, that users can reconnect to (one of) his
previously established  and disconnected session(s).

This would make the "roaming desktop" possible - without the need, to assign
dedicated port numbers to users and pre-spawning xnvc processes for ALL of
them.

It could be done by adding a "dispatcher" in front (or inside?)  xvnc which
is able to manage sessions previously established. sure, some sort of
authentication needs to be done at this level, because the only reasonable
way to re-establish sessions and to route it to the appropriate client, is
to get known, WHO is reconnecting.

I administer citrix servers, which have this feature - when the user
reconnects he is routed to his old session. if he has more than one
disconnected session, he can choose, which he wants to re-establish. I also
have some experience with sunray terminals - which have this feature in "2
flavours".  The user is able to re-establish a disconnected session by
entering login/password OR by using a smartcard (whereas the sunray x-server
process[==xvnc] is "bound" to a smartcard - so the user inserts his
smartcard at any terminal and gets back his personal desktop)

are there any solutions around or is there any work in progress,
implementing
this with vnc ?
i`m really shure this IS possible with reasonable effort. (unfortunately i`m
awful bad programmer, otherwise i would do that myself :)

regards
roland



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