B. Scott Smith wrote:
Kevin Smathers wrote:
lizhong wrote:
Hi all,
I have spent several months in learning the source code of vnc free edition. Now I'm trying to get codes of some other thin client systems.I know VNC is a partly open source project, and X is also open source. But X is over complex and may cost me much time in learning it. Is there any other choice? I just want to know the details in the protocols. VNC is a pixel-based system. It delivers pixel in different encoding forms through the network.There are also some other protocols which send drawing commands to the client, such as X, SunRay.
    Is there any suggestion?
    Thank you for any help!
There are a lot of other protocols for thin clients. Arguably the two most important standards based thin client protocols are ITU-T T.120; and the various RFCs and recommendations that comprise HTTP and HTML. But there are dozens of older (and newer) alternatives to these. Consider for example that for years Prodigy ran their Internet service using NAPLPS, or that VT100 emulation is still the defacto standard for all character oriented thin clients to most Unix terminal applications.

If you are specifically asking for graphical protocols, you may also want to look at Windoze Remote Desktop Protocol (RDP). You can find an open source client at: http://rdesktop.sourceforge.net, and a server implementation at: http://xrdp.sourceforge.net.
Right.  Windows remote desktop is the main reason I listed T.120.
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