> -----Original Message----- > From: roland [mailto:[EMAIL PROTECTED] > > i`m using a setup of xvnc under inetd and kdm control, so > each user can > connect an 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.
Come to think of it, I have the next idea, that even has more solutions: Somehow give Xvnc a call to start talking RFB on an other port. It can have the same options as the default like 'readonly' or 'once' and even an own pointer to an (other) password file. This adds the posibility to have one session that gives both read/write access (for the user) and readonly access (for viewers). Or even provide dedicated access. For the inetd way to start vnc, it adds the posibility of multiple viewers. It does NOT give a way to have a persistent session since inetd somehow will kill the session once the initial communication path is stopped. But as long as the initial viewer stays on, the session is somehow re-entrant. > > 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. > (unfurtunately i`m > awful bad programmer, otherwise i would do that myself :) In the end, it's inetd that ruins your day. I think you only have to write a deamon that starts Xvnc just like inetd does but then, keep the session alive and have some administration to see if the session is running or not. CBee _______________________________________________ VNC-List mailing list [EMAIL PROTECTED] http://www.realvnc.com/mailman/listinfo/vnc-list
