A protocol test system for the study of sliding window protocols on networked UNIX computers

A software-based system for modeling transport layer protocols and observing their behavior and performance in an actual local area network setting is introduced. The simple interface definition provides for rapid prototyping of the flow control, error recovery and connection management features of transport layer protocols. The ability to introduce errors into the communications stream allows for testing in a variety of situations which are troublesome for communications protocols, such as long delays in delivery and acknowledgment, packet loss, and high noise rates. This protocol test system (PTS) is intended as a tool which can provide a practical environment in which students and engineers can develop and study communications protocols,.<
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