Babel

The goal of this project was to create a VOIP cross-platform (Linux & Windows) software which enables multiple users to talk at any time.

Here is an extract of the subject:

PROTOCOL

The Babel project aims to create an SIP-like Voice Over IP (VOIP) protocol. It MUST be usable over the Internet (no multicast or anything LAN specific).
To test your protocol you MUST write a server and a client implementation.
The protocol MUST be a client/server protocol but voice transport MUST be client to client (the server can have a proxy mode for conference calls or NAT-ed clients).

The protocol MUST be a binary protocol, not a text one. For instance, TCP is a binary protocol and HTTP is a text one.

LIBRARIES

Any non-explicitly authorized library is explicitly forbidden. However:

• You are NOT allowed to use any SIP or other VOIP library.
• You MUST use the PortAudio (v190600.20161030) library for anything sound related
• You MUST use Opus (1.3.1) for the compression codec.
• You MUST use Qt (5.14.2) for the client’s graphical user interface, or any implementation detail on the client side.
• You are NOT allowed to use any Qt library on the server side.
• You are allowed and encouraged to use Boost libraries.
• For storage you are allowed to use sqlite3 and/or sqlite_orm
• PortAudio and Opus are C libraries, so you MUST create your own abstractions to them.

How to run it?

LINUX (recommended)

First, make sure QT5 library and Conan C++ package manager are installed.
Add following remotes to Conan:

• epitech: https://api.bintray.com/conan/epitech/public-conan
• bincrafters: https://api.bintray.com/conan/bincrafters/public-conan

At the root of the repository, run the following command:

$> mkdir build && cd build && conan install .. --build missing && cmake .. && make && cd bin

To run the server:

$> ./babel_server <PORT>

To run the client:

$> ./babel_client <SERVER_IP> <SERVER_PORT> <CLIENT_IP>

WINDOWS

The QT5 Windows installation is really hard to do, I recommend you to use any linux distro.
First, make sure QT5 library and Conan C++ package manager are installed.
Add following remotes to Conan:

• epitech: https://api.bintray.com/conan/epitech/public-conan
• bincrafters: https://api.bintray.com/conan/bincrafters/public-conan

At the root of the repository, run the following commands using powershell:

$> mkdir build
$> cd build
$> conan install .. --build missing
$> cmake ..
$> cmake --build .
$> cd bin

To run the server:

$> ./babel_server.exe <PORT>

To run the client:

$> ./babel_client.exe <SERVER_IP> <SERVER_PORT> <CLIENT_IP>