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################################################################################
# README #
# #
# Description: This file serves as a README and documentation for project2 #
# #
# #
################################################################################
[TOC-1] Table of Contents
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[TOC-1] Table of Contents
[DES-2] Description of Files
[RUN-3] How to Run
[DES-2] Description of Files
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Here is a listing of all files associated with Recitation 1 and what their'
purpose is:
Makefile - Contains rules for make
readme.txt - Current document
peer.c - The main file
bt_parser.[c,h] - Parse configuration files
chunk.[c,h] - Generate chunks based on provided files
ctr_send_recv.[c,h] - Contains all recv and send related functions, and related data structure, congestion control and flow control functions are also in this file
client.c - client sample
debug.[c,h] - Utility debug functions
input_buffer.[c,h] - Parse user input
list.[c,h] - List library
make_chunks.c - Generate chunks
nodes.map - Include ip and port of all peers
packet.[c,h] - Generate various kinds of packets
processs_udp.[c,h] - Process udp input and output based on the packet
peer.c - Main file
problem2-peer.txt - File contains the resulting window size
process_udp.[c,h] - Contains functions related to processing inbound and outbound packets of different types
readme.txt - Readme file
server.c - Sample server
sha.[c,h] - Hash functions
spiffy.[c,h] - Simulate environment with packet loss
test_input_buffer.c - Test input buffer
tests.txt - Contains the tests done
topo.map - Include topology of peers
vulnerabilities.txt - Details the vulnerabilities of the code
Design:
Each peer keeps a list of data window and a list of flow windows. When the peer sends a chunk of data another peer, it create a data window and enlist it. A flow window is created when the peer downloads a chunk from another peer. Congestion control and flow control are done by manipulating all sorts of indices in the data structure of data window and flow window.
Each time the sock of a peer is selected, it reads/writes one single packet, which is a packet from/to the peer with oldest connection with this peer.
Congestion control is done according to the requiremnts of handout. Flow control fixes the window size to be 10, which might limit the transmitions speed.
[RUN-3] How to Run
--------------------------------------------------------------------------------
Building code by running make:
make
Running code by inputing:
peer -p <peer-list-file> -c <has-chunk-file> -m <max-downlaods>
-i <peer-identity> -f <master-chunk-file> -d <debug-mode>
// debug mode is hard coded to 0xff, i.e. all debug info. are printed
[TXT-5] The content of file problem2-peer.txt
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p2p bittorrent with congestion control (UDP)
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