priyendumori / Mini-Bit-torrent

Peer-to-peer file sharing system implemented using socket programming and multithreading in C++. Peers can upload and download text and multimedia files using custom format for torrent files called .mtorrent file.

Mini Bit Torrent

A mini p2p file sharing system.

Prerequisites

We need following to generate SHA1 hash of the files.

sudo apt-get install openssl
sudo apt-get install libssl-dev

Compiling

• Code is divided in folders: client and tracker
• Both folders have corresponding Makefile. Use "make" in both folders to compile

Running

• Run tracker

./tracker_2018201103 <my_tracker_ip>:<my_tracker_port> <other_tracker_ip>:<other_tracker_port> <seederlist_file> <log_file>

• Run client

./client_2018201103 <CLIENT_IP>:<UPLOAD_PORT> <TRACKER_IP_1>:<TRACKER_PORT_1> <TRACKER_IP_2>:<TRACKER_PORT_2> <log_file>

log_file(s) can be used to check the activities

Commands for client

• Share a file

share <local_file_path> <filename>.<file_extension>.mtorrent

It generates an mtorrent file and shares the information with tracker so that tracker can add the peer to seederlist

• Download a file

get <path_to_.mtorrent_file> <destination_path>

Gets data about the peers sharing the required file and starts downloading the file in destination_path

• Stop sharing a file

remove <filename.mtorrent>

Deletes mtorrent file and remove information about the peer from the tracker

• Show downloads

show downloads

show downloaded and downloading files

• Close the peer

exit

Remove information from the tracker and closes the client program

Assumptions

• Spaces in file name should be escaped by \
• Relative and absolute paths are supported
• Only one tracker is implemented
• Downloading occurs only from one peer (first peer from seederlist) in chunks of 512KB
• All the mTorrent files should be present in client/mTorrent folder