abgomez / udp-file-transfer

nets-udp-file-transfer

General description

Implement a stop-and-wait file transfer protocol of your own design that utilizes UDP as its transport.

Undergraduates: only need to implement "get"

Client syntax: get filename

Graduate students: must implement both "get" and "put"

Client syntax:

• get filename
• put filename

Requirements:

• Your server should be a separate program from the client.
• Your protocol can only send messages of length no longer than 100 bytes
• Teams are permitted: Up to two students. Each must be responsible for implementing and documenting either the client or server.
• Your implementation must be able to successfully transfer large binary files (at least 1MB) even when the UDP proxy delays and drops some of the datagrams.
• The client and server should do "something reasonable" when the protocol is unable to successfully transfer a file.
• Your implimentation should indicate relevant stats such as measured RTT and throughput.
• Your report should
• describe the prototcol
• indicate and analyze its performance for each of the following proxy configurations (scripts are in the proxy subdir):

Script	Throughput	PropDelay	QueueCap	pDrop	pDelay
p1.sh	10,000 B/s	0.05s	3	0.0	0.0
p2.sh	10,000 B/s	0.05s	3	0.1	0.0
p1.sh	10,000 B/s	0.05s	3	0.0	0.1

Part 1: Stop and Wait

Your solution should be in the stopWait subdir and implement a stop and wait protocol. Your client should be in its client subdir. Your server should be in its server subdir. Each should be documented (an empty README is provided).

Part 2: Sliding window

Your solution should be in the sliding subdir. Your client should be in its client subdir. Your server should be in its server subdir. Each should be documented (an empty README is provided).

UDP Proxy

A UDP Proxy and demo udp client & server are in the proxy subdir.