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Title : A TCP Test to Allow Senders to Identify Receiver Cheating
Author(s) : T. Moncaster, et al.
Filename : draft-moncaster-tcpm-rcv-cheat-00.txt
Pages : 25
Date : 2007-2-21
The honesty of TCP senders and receivers has become a major concern
to the Internet community. Currently, TCP senders rely on receiver
honesty so they can correctly react to network congestion. Such
honesty cannot be taken for granted. Receivers may conceal dropped
packets to prevent their flow being subject to a congestion response
or may acknowledge data optimistically to get a higher bandwidth.
This document introduces a simple two-stage test of receiver honesty.
Once a receiver fails the first stage it can be subjected to the
second stage test that conclusively proves cheating. The performance
hit of the first stage is very slight compared to the second. So,
although the first stage is not decisive, it selects which receivers
are acting suspiciously enough to warrant the second stage. This
specification does not modify the TCP protocol - the tests only
require a change to sender implementations.
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