Re: simple transport protocol

Hello, Willem!
You wrote on Sun, 25 May 2008 09:53:23 +0000 (UTC):

W> Well it depends on the type of checksum. But here's a simple example:
W> Suppose the checksum is a simple sum modulo 256.
Some misunderstanding of terms: you sum up the values to be transmitted and
then apply operation of module 256? It means 'sum % 256' in C language for
example, but according to your example what you do is: '256 - sum'

Perhaps the checksum method you provided as an example uses another meaning
of modulo ?

W> We want to send the values: 2 5 8 10 15 20
W> So, the total of what we send is this:
length |> data | crc

W> 0 7 2 5 8 10 15 20 196

With best regards, Roman Mashak. E-mail: mrv@xxxxxxxx


.

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