Re: VNC Server perl script and C++ Code
>>The RFB ports start from 5900, the HTTP java viewer ports from 5800, and the >>X11 ports from 6000. It's therefore necessary to "skip" by 300 ports such >>that the next 100 VNC servers use ports 6100+ for HTTP, 6200+ for RFB, 6300+ >>r X11 and so-on. James, Could you tell me if I want to modify the code such that ports(RFB,HTTP amd VNC server) should not conflict and should support 200 sessions instead of 100 sessions limit.The thing is if i modify just vncserver script then it will able to generate the ports i wants but what about the JAVA viewer port? To make chanege only in vncserver script will generate VNC server port and allow to create sessions on servers. but to display those sessions we need to have JAVA viewer port also so could you tell me how to do this? I figured out that i could create the session but not able to display on my screen using vncviwer. And i think the ports should not be conflict with other process that will be taken by checking whether port is free or not. Am i correct? - Original Message From: James Weatherall <[EMAIL PROTECTED]> To: PARESH MASANI <[EMAIL PROTECTED]> Cc: vnc-list@realvnc.com Sent: Thursday, 24 January, 2008 11:39:59 PM Subject: RE: VNC Server perl script and C++ Code Hi Paresh, > >>through from 1..1000 > should work, > But i saw that in C++ code in hostandport.h and some > vncExt.cc file, this same check is there to return a port > number. Will it not make any difference? I think the code you're referring to is used when Xvnc is launched from inetd & therefore can't rely on vncserver having allocated a display for it. > >> numbers with each block being > >>300 ports apart, e.g. > 1..99,300..399,600..699 and so on > Why ports are 300 aparts. is any particular reason there? The RFB ports start from 5900, the HTTP java viewer ports from 5800, and the X11 ports from 6000. It's therefore necessary to "skip" by 300 ports such that the next 100 VNC servers use ports 6100+ for HTTP, 6200+ for RFB, 6300+ for X11 and so-on. > >> The "vncserver" program is actually a wrapper around "Xvnc", > I also read that there are so many Xvnc available in real > vnc.What is that all about in brief. Sorry, I'm afraid I don't know what you mean by that! Regards, -- Wez @ RealVNC Ltd Meet people who discuss and share your passions. Go to http://in.promos.yahoo.com/groups ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
RE: VNC Server perl script and C++ Code
Hi Paresh, On Unix platforms: "vncviewer" is the stand-alone VNC Viewer. "vncserver" is the command users run to start a VNC Server. "Xvnc" is the actual VNC Server. -- Wez @ RealVNC Ltd > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of PARESH MASANI > Sent: 25 January 2008 05:06 > To: James Weatherall > Cc: vnc-list@realvnc.com > Subject: Re: VNC Server perl script and C++ Code > > H...Great..Got it..Thanks James. > > The "vncserver" program is actually a > wrapper around "Xvnc", > > I also read that there are so many Xvnc available in > real > > vnc.What is that all about in brief. > > >>Sorry, I'm afraid I don't know > what you mean by that! > > I mean to say, Only on Xvnc is there or more? > I knows > about vnc server and vnc viewer are the main part of real vnc > then what is the purpose of Xvnc? > > Thanks, > Paresh > > > > - Original Message > From: James > Weatherall <[EMAIL PROTECTED]> > To: PARESH MASANI <[EMAIL PROTECTED]> > Cc: > vnc-list@realvnc.com > Sent: Thursday, 24 January, 2008 11:39:59 PM > Subject: RE: > VNC Server perl script and C++ Code > > Hi Paresh, > > > >>through from 1..1000 > > > should work, > > But i saw that in C++ code in hostandport.h and some > > > vncExt.cc file, this same check is there to return a port > > number. Will it > not make any difference? > > I think the code you're referring to is used when Xvnc is > launched from inetd & therefore can't rely on vncserver > having allocated a display for it. > > > >> numbers with each block being > > >>300 ports > apart, e.g. > > 1..99,300..399,600..699 and so on > > Why ports are 300 aparts. is > any particular reason there? > > The RFB ports start from 5900, the HTTP java viewer ports > from 5800, and the > X11 ports from 6000. It's therefore necessary to "skip" by > 300 ports such that the next 100 VNC servers use ports 6100+ > for HTTP, 6200+ for RFB, 6300+ for X11 and so-on. > > > >> The "vncserver" program is > actually a wrapper around "Xvnc", > > I also read that there are so many Xvnc > available in real > > vnc.What is that all about in brief. > > Sorry, I'm afraid I > don't know what you mean by that! > > Regards, > > -- > Wez @ RealVNC Ltd > > > Why > delete messages? Unlimited storage is just a click away. Go > to http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html > ___ > VNC-List mailing list > VNC-List@realvnc.com > To remove yourself from the list visit: > http://www.realvnc.com/mailman/listinfo/vnc-list > ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
Re: VNC Server perl script and C++ Code
Following up in-line steve menard wrote: numbers with each block being 300 ports apart, e.g. 1..99,300..399,600..699 and so on Why ports are 300 aparts. is any particular reason there? 100 Viewports will cover 200 java and direct ports only a single display can be on a listening port with the free version [although you can have many computers viewing the same screen -display port- ] YesJava Port is 100 less than VNC Port both are required free: when you use port :0 it is BOTH 5800 & 5900 when you use port :10 it is BOTH 5810 & 5910 when you use port :90 it is BOTH 5890 & 5990 X11 [standard 'desktop at the keyboard' uses 6000] -- so you can't use 6000 or :100 When you use the next batch of available port numbers when you use port :300 it is BOTH 6100 & 6200 [so no conflit with 6000 range ] when you use port :310 it is BOTH 6110 & 6210 when you use port :399 it is BOTH 6199 & 6299 [ next port conflict with 6200 ] The next range available is java viewer starting at :6300 so viewer is at :6400 When you use the next batch of available port numbers when you use port :300 it is BOTH 6300 & 6400 [so no conflict with 6100-6199: 6200-6299] when you use port :310 it is BOTH 6310 & 6410 when you use port :399 it is BOTH 6399 & 6499 [ next port range java- 6500-6599 direct 6600-6699 ] THIS IS NOT CODED FOR in the wrapper you see ; it goes only to 99 300 ports apart, e.g. 1..99,300..399,600..699 and so on. Scanning straight through from 1..1000 should work, but will waste time scanning ranges that cannot be used because of port clashes. Regards, -- Wez @ RealVNC Ltd ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list . ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
Re: VNC Server perl script and C++ Code
H...Great..Got it..Thanks James. The "vncserver" program is actually a wrapper around "Xvnc", > I also read that there are so many Xvnc available in real > vnc.What is that all about in brief. >>Sorry, I'm afraid I don't know what you mean by that! I mean to say, Only on Xvnc is there or more? I knows about vnc server and vnc viewer are the main part of real vnc then what is the purpose of Xvnc? Thanks, Paresh - Original Message From: James Weatherall <[EMAIL PROTECTED]> To: PARESH MASANI <[EMAIL PROTECTED]> Cc: vnc-list@realvnc.com Sent: Thursday, 24 January, 2008 11:39:59 PM Subject: RE: VNC Server perl script and C++ Code Hi Paresh, > >>through from 1..1000 > should work, > But i saw that in C++ code in hostandport.h and some > vncExt.cc file, this same check is there to return a port > number. Will it not make any difference? I think the code you're referring to is used when Xvnc is launched from inetd & therefore can't rely on vncserver having allocated a display for it. > >> numbers with each block being > >>300 ports apart, e.g. > 1..99,300..399,600..699 and so on > Why ports are 300 aparts. is any particular reason there? The RFB ports start from 5900, the HTTP java viewer ports from 5800, and the X11 ports from 6000. It's therefore necessary to "skip" by 300 ports such that the next 100 VNC servers use ports 6100+ for HTTP, 6200+ for RFB, 6300+ for X11 and so-on. > >> The "vncserver" program is actually a wrapper around "Xvnc", > I also read that there are so many Xvnc available in real > vnc.What is that all about in brief. Sorry, I'm afraid I don't know what you mean by that! Regards, -- Wez @ RealVNC Ltd Why delete messages? Unlimited storage is just a click away. Go to http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
RE: VNC Server perl script and C++ Code
Hi Paresh, > >>through from 1..1000 > should work, > But i saw that in C++ code in hostandport.h and some > vncExt.cc file, this same check is there to return a port > number. Will it not make any difference? I think the code you're referring to is used when Xvnc is launched from inetd & therefore can't rely on vncserver having allocated a display for it. > >> numbers with each block being > >>300 ports apart, e.g. > 1..99,300..399,600..699 and so on > Why ports are 300 aparts. is any particular reason there? The RFB ports start from 5900, the HTTP java viewer ports from 5800, and the X11 ports from 6000. It's therefore necessary to "skip" by 300 ports such that the next 100 VNC servers use ports 6100+ for HTTP, 6200+ for RFB, 6300+ for X11 and so-on. > >> The "vncserver" program is actually a wrapper around "Xvnc", > I also read that there are so many Xvnc available in real > vnc.What is that all about in brief. Sorry, I'm afraid I don't know what you mean by that! Regards, -- Wez @ RealVNC Ltd ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
Re: VNC Server perl script and C++ Code
numbers with each block being 300 ports apart, e.g. 1..99,300..399,600..699 and so on Why ports are 300 aparts. is any particular reason there? YesJava Port is 100 less than VNC Port both are required free: when you use port :0 it is BOTH 5800 & 5900 when you use port :10 it is BOTH 5810 & 5910 when you use port :90 it is BOTH 5890 & 5990 X11 [standard 'desktop at the keyboard' uses 6000] -- so you can't use 6000 or :100 When you use the next batch of available port numbers when you use port :300 it is BOTH 6100 & 6200 [so no conflit with 6000] when you use port :310 it is BOTH 6110 & 6210 when you use port :399 it is BOTH 6199 & 6299 [ next port conflict with 6200 ] 300 ports apart, e.g. 1..99,300..399,600..699 and so on. Scanning straight through from 1..1000 should work, but will waste time scanning ranges that cannot be used because of port clashes. Regards, -- Wez @ RealVNC Ltd ___ VNC-List mailing list VNC-List@realvnc.com To remove yourself from the list visit: http://www.realvnc.com/mailman/listinfo/vnc-list
Re: VNC Server perl script and C++ Code
Thanks James, Your answer help me a lot. Few more clarifications as i am
completely new to real vnc and trying to learn it.
>>through from 1..1000
should work,
But i saw that in C++ code in hostandport.h and some vncExt.cc
file, this same check is there to return a port number. Will it not make any
difference?
>> numbers with each block being
>>300 ports apart, e.g.
1..99,300..399,600..699 and so on
Why ports are 300 aparts. is any particular
reason there?
>> The "vncserver" program is actually a wrapper around "Xvnc",
I also read that there are so many Xvnc available in real vnc.What is that all
about in brief.
Thanks,
Paresh
- Original Message
From: James
Weatherall <[EMAIL PROTECTED]>
To: PARESH MASANI <[EMAIL PROTECTED]>;
vnc-list@realvnc.com
Sent: Thursday, 24 January, 2008 5:50:25 PM
Subject: RE:
VNC Server perl script and C++ Code
Hi Paresh,
VNC is implemented in C/C++
(aside from the VNC Viewer for Java, obviously).
The "vncserver" program is
actually a wrapper around "Xvnc", and is
implemented in Perl in VNC Free
Edition.
In order to adjust it to automatically allocate display numbers
beyond 99,
you need to make it scan blocks of 100 display numbers with each
block being
300 ports apart, e.g. 1..99,300..399,600..699 and so on. Scanning
straight
through from 1..1000 should work, but will waste time scanning ranges
that
cannot be used because of port clashes.
Regards,
--
Wez @ RealVNC Ltd
> -Original Message-
> From: [EMAIL PROTECTED]
>
[mailto:[EMAIL PROTECTED] On Behalf Of PARESH MASANI
> Sent: 24
January 2008 12:13
> To: vnc-list@realvnc.com
> Subject: VNC Server perl
script and C++ Code
>
> Hi,
>
> I found that real vnc for unix having vnc
server perl script
> plus c++ code. my questions are:
>
> 1. Why this two
type code? what each meant for?
> 2. I
> found GetDisplayNumber function in
perl script given below..
>sub
> GetDisplayNumber
>{
>foreach
$n (1..99) {
>if
> (&CheckDisplayNumber($n)) {
> return $n+0;
# Bruce Mah's workaround for bug in
> perl 5.005_02
> }
>}
>die
"$prog ERROR: no free display
> number on $host.\n";
>}
> here my question
is if i modified this loo 1-1000 instead of
> 1-99.will it work for 1000
display numbers?
> if anyone knows then
> please let me know. it will be
really helpful to me..
>
> Thanks
> Paresh
> Chat on a cool, new interface.
No download required. Go to
>
http://in.messenger.yahoo.com/webmessengerpromo.php
>
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>
http://www.realvnc.com/mailman/listinfo/vnc-list
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Get the freedom to
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RE: VNC Server perl script and C++ Code
Hi Paresh,
VNC is implemented in C/C++ (aside from the VNC Viewer for Java, obviously).
The "vncserver" program is actually a wrapper around "Xvnc", and is
implemented in Perl in VNC Free Edition.
In order to adjust it to automatically allocate display numbers beyond 99,
you need to make it scan blocks of 100 display numbers with each block being
300 ports apart, e.g. 1..99,300..399,600..699 and so on. Scanning straight
through from 1..1000 should work, but will waste time scanning ranges that
cannot be used because of port clashes.
Regards,
--
Wez @ RealVNC Ltd
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of PARESH MASANI
> Sent: 24 January 2008 12:13
> To: vnc-list@realvnc.com
> Subject: VNC Server perl script and C++ Code
>
> Hi,
>
> I found that real vnc for unix having vnc server perl script
> plus c++ code. my questions are:
>
> 1. Why this two type code? what each meant for?
> 2. I
> found GetDisplayNumber function in perl script given below.
> sub
> GetDisplayNumber
> {
> foreach $n (1..99) {
>if
> (&CheckDisplayNumber($n)) {
> return $n+0; # Bruce Mah's workaround for bug in
> perl 5.005_02
> }
> }
> die "$prog ERROR: no free display
> number on $host.\n";
> }
> here my question is if i modified this loo 1-1000 instead of
> 1-99.will it work for 1000 display numbers?
> if anyone knows then
> please let me know. it will be really helpful to me..
>
> Thanks
> Paresh
> Chat on a cool, new interface. No download required. Go to
> http://in.messenger.yahoo.com/webmessengerpromo.php
> ___
> VNC-List mailing list
> VNC-List@realvnc.com
> To remove yourself from the list visit:
> http://www.realvnc.com/mailman/listinfo/vnc-list
>
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