TCP "reliability"

[Black_David@emc.com]

> With TCP you get reliable delivery and sending rate adaptability for free.
> Some posts on this thread have expressed sentiments doubting the
reliability
> of the transport which is surprising.

Careful - there are two meanings of the word reliability being confused
here.

(1) Data is delivered in the face of dropped packets.  TCP is definitely
	reliable in this sense - all the data is delivered, in order, or the
	connection closes.
(2) Data is correctly delivered in the face of corruption.  TCP's 16-bit
	checksum falls short of a 32-bit CRC in its ability to detect
	corruption, and hence TCP leaves something to be desired here.

The word "integrity" is a better term for (2) to avoid confusion.

Thanks,
--David
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