How viewer state is saved for later restoration

[Cham Mama]

Hi

Thanks to all who replied to my question. Now I am
clear about the concept and got what I was looking
for. I knew that VNC is stateless, but I had little
doubt which I couldn't put in proper way which lead to
lots of questions on this and this was hotting up. Now
I am happy with all the answers and thank all of you
once again for detailed explanation.

Thanks
Chammama
--- Wayne Throop <throopw "at" sheol.org> wrote:
> : Cham Mama <chammama "at" yahoo.com>
> : May be my question yesterday was confusing to
> many.
> : Here I am putting in a different way.
> : 1. I connect to a VNC Server from my office
> Desktop
> : 2. Then I start some application and start editing
> a
> : mail... Then I leave in the middle of the mail
> : editing.
> : (I am assuming that whatever application I am
> running
> : is being stored in the VNC server)
> 
> Your assumption is a bad one.  The VNC server takes
> no action.
> You are simply not looking at it anymore.
> 
> : 3. Now I connect from Home Desktop to the same VNC
> : Server.
> : 4. As per VNC's document, I should be able to see
> the
> : mail editing application being started so that I
> can
> : complete the editing.
> : So my question is, where is the VNC code which
> remembers the viewers'
> : state, so that when I connect from Home, gives the
> same desktop (i.e
> : restore the same desktop to that of the Office
> Viewer, with all the
> : opened applications at that time) to the new
> viewer ? 
> 
> How many times, in how many ways, can the simple
> message
> THAT THERE IS NO SUCH CODE be given?  Do you insist
> that some
> physical process must "save" the state of the moon,
> and restore
> it later when you open your eyes again?  Would you
> keep asking
> what physical processes are "remembering" the moon
> so it can
> be "restored" later?
> 
> The moon is there, and stays there, whether your
> eyes are
> open or not.  And the desktop is there, whether
> there is a VNC
> viewer attached to it or not.  Therefore, VNC
> doesn't need to
> save anything at all.
> 
> The closest there is to it is the code that opens
> the TCP connection
> given the IP address and screen number of the VNC
> server.  It doesn't
> REMEMBER anything at all; it simply connects you to
> the SAME desktop.
> 
> 
> Or put it this way (as Adrian Umpleby just did).
> The viewer stores no state at all, so there is no
> code
> that saves state, since there's no state to save.
> 
> 
> Wayne Throop   throopw "at" sheol.org
>
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