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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<title>LibVNCServer</title>
</head>
<body>
<h1>LibVNCServer</h1>
<br>
<h2> News </h2>
<strong>2003/02/19</strong> A preliminary patch for rdesktop (CVS) to make
rdp2vnc, a translator from Windows Terminal Server's protocol to VNC's protocol,
is <a href=rdesktop-cvs+vnc.diff.gz>available</a>. It needs a new version of
libvncserver; try CVS until I release 0.6.
<p>
<strong>2003/02/09</strong> Version 0.5 is out! Features include autoconf based configure, rpm package (YMMV), cleanup of directory structure, NEW x11vnc! ZRLE encoding! HTTP tunnelling through LibVNCServer's HTTP support! Many bug fixes!
<p>
<strong>2002/07/28</strong> Version 0.4 is out! Biggest feature: NewFB encoding. Quite a few bugfixes also (Thanks to all!).
<p>
<strong>2001/12/14</strong> A new version of
<a href=http://prdownloads.sourceforge.net/libvncserver/rdesktop-1.1.0+vnc-0.2.tar.gz>rdesktop+vnc</a> is available!
(Includes support for other platforms keyboard mapping with plain rdesktop!)
<p>
<strong>2001/10/23</strong> Added a link to my homepage at the end.
<p>
<strong>2001/10/18</strong> I released the rdp2vnc extensions as well as
patches for general keyboard handling, working inside Xvnc and
process_text2 (the famous "font:" error) to rdesktop. Please find it on
the <a href=http://sourceforge.net/project/showfiles.php?group_id=32584>
download page</a>.
<p>
<strong>2001/10/13</strong> A snapshot of
<a href=http://sourceforge.net/project/showfiles.php?group_id=32584>
LibVNCServer</a> and
<a href=http://sourceforge.net/project/showfiles.php?group_id=32584>
RDP2VNC</a>
is now available. You can also download the
<a href=http://sourceforge.net/project/showfiles.php?group_id=32584>
diff</a> against rdesktop-1.1.0.
rdp2vnc also contains the patches for keyboards other than PC keyboards,
and you can specify "-k fr" again.
<p><br>
<h2> Introduction </h2>
If you don't know VNC, have a look at
<a href=http://www.uk.research.att.com/vnc/>the original VNC</a> or at
<a href=http://www.tridiavnc.com/>Tridia VNC</a>, who also have commercial
support for it.
<p>
Now that you know what it is, maybe you want to make your own server.
If this is not the case, you can ignore the rest of this page an go on
surfing the internet.
<p>
Now that you want to make a VNC server, that is, a server which speaks
the RFB protocol, you can download this library from
<a href=http://sf.net/projects/libvncserver/>sourceforge</a>.
<p>
The simplest server looks like this:<br><br>
<pre>
#include "rfb.h"
int main(int argc,char** argv)
{
rfbScreenInfoPtr server=rfbGetScreen(&argc,argv,400,300,8,3,4);
server->frameBuffer=malloc(400*300*4);
rfbInitServer(server);
rfbRunEventLoop(server,-1,FALSE);
return(0);
}
</pre>
This sample creates a 400x300 frame buffer in true colour. There are
4 bytes per pixel, because 3 (which are only used instead of all 4) is
such an odd number. Then the server is initialized and a blocking event
loop is started.
<p>
Of course, this program only shows rubbish (whatever is in the frame
buffer you malloc'd), but it proves that writing a server can be
very easy.
<p>
For details (especially if you want to write a real server) look into the
provided examples, pnmshow.c and example.c, and into the README. You find
there documentation for much more complicated servers.
<p>
Serious comments, suggestions, pizzas, etc. go to
<a href=mailto:Johannes.Schindelin@RuBBISHgmx.de>me</a>
(delete the RuBBISH).
<p>
Here are some links:
<p>
LibVNCServer is an adapted
<a href=http://www.osxvnc.com/>OSXvnc-server</a> by
<a href=mailto:mcguirk@incompleteness.net>Dan McGuirk</a>,
which is in turn an adapted original
<a href=http://www.uk.research.att.com/vnc/>Xvnc</a>.
<p>
I use it to to drive a
<strong>Windows Terminal Server (RDP) to RFB converter</strong> with it.
Much work has been done to make
<a href=http://www.rdesktop.org/>rdesktop</a>
a good X client to Windows Terminal Services (both NT and 2000, see
<a href=http://bibl4.oru.se/projects/rdesktop/>rdesktop patches</a>).
Previous work was done by <a href=mailto:tme23@cam.ac.uk>Tim Edmonds</a>
who has set up such a converter named
<a href=http://www-lce.eng.cam.ac.uk/~tme23/vdesktop/>vdesktop</a>
including a single client server and a multi client server, rdp2vnc.
Unfortunately he used the example code from rfbcounter, which can encode only
RRE, which is not a good compression.
<p>
If you want to know about other of my projects, look at
<a href=http://wrzx69.rz.uni-wuerzburg.de/~gene099/index.html>my homepage</a>.
<hr>
Project hosted on the fantastic
<A href="http://sourceforge.net">
<IMG src="http://sourceforge.net/sflogo.php?group_id=32584"
width="88" height="31" border="0" alt="SourceForge Logo"></A><br>
<!-- Created: Thu Sep 27 12:27:41 MESZ 2001 -->
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Last modified: Sun Feb 09 06:27:38 MESZ 2003
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</body>
</html>
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