P2P : Share/Stream/Gossip Over LAN

Introduction

P2P helps you to share and stream resources over LAN, where each acts as a independent node. There is no dependency on a central server, each peer have their own local database which help them to act independant.

Video explanation

Features Implemented

1. Triggring events when a peer leave/joins the network:

   • Uses nodejs dgram libaray to broadcast UDP packet when a peer joins/leaves the network.
   • Each peer maintains their own list of active user found in network.

2. Sharing/Browsing resources over lan:

   • Share resources by just providing their path.
   • SHA-256 hash used to uniquely identify files/folders.
   • Look for resources shared by other active peer in the network.

3. Download Resources:

   • Uses nodejs net library to transfer file chunk over TCP socket.
   • Pulls chunk from different peers to build file.
   • Allows folder download without compressing it.
   • Health of chunk chunk checked using checksum.
   • Automatically pauses the download when peers goes offline.
   • Ability to resume download from last chunk.

4. Chat With Other Peers :

   • Provide ability to send chat message over TCP socket.

5. Stream Shared Videos From Other Peers :

   • Real time video streaming from other active peer on network.
   • No need to download videos on local PC.

Frameworks/Libraries/Packages Used

- Node Js
- React
- Dgram
- Net
- Inquirer
- Commander
- Crypto
- Socket.io
- Docker
- Mongodb

Local Setup

Clone the repositorie, cd into it, and then follow the below mentioned steps for starting backend and web-client.

Starting node:

- Fork the repository.
- Clone the repository (git clone https://github.com/arun-kushwaha04/P2P.git).
- Open the folder in which you cloned the repository.
- Run mongodb as a docker container(important). You can use this command `docker run -d -p 12707:12707 mongo --name=mongod`
- Run *npm install*.
- Find your networks broadcast address using ifconfig(mac/linux) or ipconfig.    
- Now you can run 'npm start {provide_a_desired_username_here}'.    
- Enter broadcast address in the cli prompt and you are good to go.

Web-client:

- cd to `web-client` folder.
- Run *npm install*.
- Run *npm start* to run web-client.
- Open `http://localhost:3000/` to access web-client.

Screenshots

TO-DO

• Improve Web ui.
• Client app for mobile devices.
• Better error handling.
• Smooth user experience.
• Dockerizing.
• Ui for customizing settings.