just out of curiosity wondering if not having checksum field in application layer of protocol major design issue? or since ip has inbuilt checksum part in it, shouldn't issue @ all? or think dumb question there never checksum in application layer?
unless mistaken ftp doesn't have checksum, , neither http, , both used download enormous pieces of software million. draw own conclusion. neither rmi, or iiop, or xdr, or ... in fact can't think of application protocol does, other 1 wrote in 1994.
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