At 11:06 PM 4/25/01 +0100, you wrote:
>Can anyone please tell me the maximum screen update packet size that the VNC
>Server would send?
>
>I am thinking of adding serial (COM) support and trying to work out the
>maximum sizes of the COM port transmit and receive buffers.
>
>Paul
The initial screen load is one single giant screen update packet. In Raw
encoding, that would be your desktop width * height * color depth --
1024x768x8bit screen needs 786432 bytes, plus a little overhead for packet
headers. Hextile, RRE, Tight, etc are harder to estimate and will depend
on the compressibility of the screen. VNC just uses a TCP stream and
leaves segmentation into actual physical packets up to the TCP/IP stack
(which is exactly what I would do, as well, given a transport that
guarantees correct delivery).
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