File sharing network

Overview

A client-server application for transferring files over a network using the TCP protocol.

Commands in the user console: list - list of shared files, get filename - upload the file, exit - exit the application, help - output possible commands.

Realization

Clients connect to the server over TCP, after connecting , they automatically send to the server a repository of names of shared files (stored in the same folder), as well as hashes for the contents of these files. If the contents of the files match, their hashes match, and the server stores a repository of unique files on the network.

The client can request a repository of files shared on the network and start downloading any of them through the server. If the same downloaded file is on 2 or more clients, the download is performed simultaneously from all clients, alternating blocks by 1 KB. Thus, each client transfers the file to the network only partially.

Dependencies

sudo apt install libboost-all-dev libssl-dev -y 

Build

From the root of the repository:

mkdir build && cd build

cmake ..

cmake --build .

Run

To start the client:

./build/client/client

To start the multithreaded server:

./build/multithreaded_server/multithreaded_server

To start the asynchronous server:

python3 ../asynchronous_server/asynchronous_server.py