Not able to connect if disaplay number is greater then 99 from vncviewer....

[James Weatherall]

Hi Paresh,

Please refer to the VNC Viewer Free Edition documentation
(http://www.realvnc.com/products/free/4.1/winvncviewer.html) for details of
the valid display & port number syntax.  The main problem you're hitting is
that VNC display numbers run only from 0-99 & desktops with display numbers
above that must be referred to by VNC port number.

Cheers,

--
Wez @ RealVNC Ltd
 

> -----Original Message-----
> From: vnc-list-admin "at" realvnc.com 
> [mailto:vnc-list-admin "at" realvnc.com] On Behalf Of PARESH MASANI
> Sent: 18 February 2008 10:30
> To: Corne Beerse
> Cc: vnc-list "at" realvnc.com
> Subject: Re: Not able to connect if disaplay number is 
> greater then 99 from vncviewer....
> 
> Thanks for the reply...
> 
> >>In short: display numbers range from 0 to 63..
> I
> think you might have missing here something,because i could 
> connect to 1-99 ports in any case successfully. only problems 
> with >99. See i could generate session which has disaplay 
> number 150 by "vncserver:150" but if i connect it using 
> vncviwer from windows side it is throwing the error  "unable 
> to connect:
> connection
>  refused(10061)"
> 
>  
> >>you might have a vnc server configured to use
> port number 50505. then 
> >>you should point your vncviewer to that portnumber,
> not the recalculated 
> >>subtract 5900) display number.
> I couldnt get this.
> Could you please more clear.
> 
> Thanks,
> Paresh
> 
> ----- Original Message ----
> From: Corne Beerse <cbeerse "at" gmail.com>
> To: PARESH MASANI
> <masaniparesh "at" yahoo.co.in>
> Cc: vnc-list "at" realvnc.com
> Sent: Monday, 18 February,
> 2008 3:28:05 PM
> Subject: Re: Not able to connect if disaplay number is 
> greater then 99 from vncviewer....
> 
> PARESH MASANI wrote:
> > Hi All,
> >
> > I just came
> across the following issue in the Real VNC:
> > I have
> > created a session using
> vncserver:150
> > When i tried to connect this session
> > using vncviwer, its
> giving error saying "unable to connect: connection
> > refused(10061)"
> > Could
> any one please tell me how to solve this?
> >
> > Thanks,
> For X11 (unix/linux)
> based VNC servers, the effective maximum number of 
> connections/sessions is limited tot 64, because the X11 
> protocol only allows display numbers 0 trough 63. There are 
> even reports of less (up to 32).
> 
> For VNC in general, it opens
> muliple ports, all with an ofset of 100: 
> For display number 0, it uses port
> 5900 for the vnc communication and
> 5800 for the webserver. The X11 based
> servers also open port 6000. For
> other display numbers, it adds the display number to the base 
> portnumbers. Hence a vnc-server at display 3 opens port 5903, 
> 5803 and 6003. This system is derived from X11, that uses the 
> same meganism.
> 
> Now you like to use display 150, which should use 6050 for 
> vnc, 5950 for http and 6150 for X11.... I hope you can see 
> the confilct.
> 
> On the
> other hand, some vnc-viewers can be pointed to port numbers 
> in stead of display numbers. I expect the distinguish between 
> portnumbers and display numbers because the come in a certain 
> range: the first port numbers have fixed usage since ages: up 
> to 1024 are all pre-defined. So you might have a vnc server 
> configured to use port number 50505. then you should point 
> your vncviewer to that portnumber, not the recalculated 
> (subtract 5900) display number.
> 
> In short: display numbers range from 0 to 63.
> 
> 
>       Bring your gang
> together - do your thing. Go to 
> http://in.promos.yahoo.com/groups 
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