"David W. Schultz" <[email protected]> writes: > But in block chain mode the current checksum will depend on all previous > checksums. What happens when a packet gets dropped?
It's a packet protocol, not a stream protocol. Each packet is checksummed separately. > How do you prevent someone from recording a valid data packet and > resending it? The answers are probably in the code but I see multiple > versions of telelco with no idea which to look at. There's a timestamp in each packet to avoid repeated data, plus the two ends have synchronized clocks -- packets are only valid for a short time so a simple repeat of an existing packet will not be valid. -- -keith
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