Meetify 🎥

• Welcome to Meetify, a modern video calling application built using Next.js 15 and WebRTC.
• This project focuses on real-time communication, providing users with personal meeting rooms and a seamless video calling experience.
• By developing this project, I explored WebRTC and various protocols, gaining valuable insights into peer-to-peer connections, media transmission, and building low-latency applications.

Meetify.mp4

Key Concepts Learned

🌐 WebRTC (Web Real-Time Communication)

• Peer-to-Peer Connections: Direct communication between users without relying on a central server, reducing latency and improving call quality.

• Signaling: Implemented a signaling server using Next.js API routes to exchange session descriptions (SDP) and ICE candidates between peers.

• ICE (Interactive Connectivity Establishment): Learned how ICE finds the best possible connection path between peers by gathering candidates (public, private, and relay addresses).

• STUN/TURN Servers:

  • STUN (Session Traversal Utilities for NAT): Helps clients discover their public IP addresses and establish direct peer-to-peer connections.
  • TURN (Traversal Using Relays around NAT): Acts as a relay server to route data if direct connections fail (used for handling restrictive firewalls).

• SRTP (Secure Real-time Transport Protocol): Ensured secure media transmission by encrypting audio and video streams.

• DTLS (Datagram Transport Layer Security): Established secure connections over WebRTC using DTLS for key exchange and encryption.

• MediaStream API: Accessed the user's camera and microphone to capture media streams and transmit them over the network.

• Data Channels: Explored WebRTC data channels to enable real-time text-based messaging during video calls.

---

📲 Connection Flow

1. Signaling: Exchange session descriptions (SDP) and ICE candidates between peers.

2. ICE Candidate Gathering: Discover the best route for the connection using STUN/TURN servers.

3. Connection Establishment: Create a peer connection using SRTP and DTLS protocols over UDP.

4. Media/Stream Handling: Transmit audio/video streams between connected peers.

---

Thank you for exploring Meetify! This project deepened my understanding of WebRTC and real-time communication protocols, enabling me to build dynamic and interactive web applications with low-latency video calls. 🚀