Peer-to-Peer File Transfer through Network

This project aims to develop a Peer-to-Peer File Transfer Project through a Network controlled and centralized by a Server.

About

This is the first team project for our Distributed Applications Programming Laboratory, being an optional course for the 6th semester of Computer Science Bachelor's Degree at Politehnica Timisoara University.

Team Members

• Stan Darius
• Sadovan Bogdan
• Roșca Nicoleta
• Sava Alexandru

Description

• We define the client as a Peer who wants to download and in the same time share different files into the Network. After the client connected to the server, he may access a list of possible files to download through the server from other clients.
• The client sends a request to the server to download a file. In that moment, the server sends a request to all of the other peers to see where the exact file requested is located.
• Peers send back a message and the server decides how to split the file and creates the ports for future connections. Therefore, the server sends back to the initial client a list of ports where all the peer-to-peer connections will be established.
• Once that is made, the partial files will be partially transfered to the client and after completion a checksum is calculated and verified in order to proceed to the last step: file reconstruction.

How to start the Server and Client

• You mush be running Linux/Ubuntu Terminal

• SERVER

• chmod 700 server.c

• chmod 700 structura.c

• chmod 700 structura.h

• gcc -c structura.c

• gcc -Wall -D_REENTRANT -pthread -o sv server.c structura.o

• ./sv

• CLIENT

• chmod 700 client.c

• gcc -c client.c

• gcc -Wall -D_REENTRANT -pthread -o cl client.c

• ./cl