project5 - Program Assignment 5 CMSC 417 Fall 2011 Nov 22 1...

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Program Assignment 5 CMSC 417 Fall 2011 Nov 22 1 Deadline Dec 12, 2011 . 2 Introduction The goal of this project is to implement unreliable rate-controlled message delivery to neighbors. This project extends the previous project by providing rate-controlled message transmission. We’ll add a “sendmsg” command that will inject a message into the network when doing so will not exceed a rate limit. The rate-control requirement ensures that messages from a host do not swamp its neighbors or the network. Because the service runs over UDP (over IP), without any retransmission, it remains unreliable. The rate control is the so-called “leaky bucket” algorithm. Water (pack- ets) pours into a leaky bucket (queue). When the bucket has water, it leaks steadily (sends at a fixed rate). If the incoming water flow is so fast that it fills the bucket (queue is filled), water spills out (packets are dropped). 3 Team Project
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project5 - Program Assignment 5 CMSC 417 Fall 2011 Nov 22 1...

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