📡 Build a WebRTC Video Call App with MERN, Socket.io & STUN/TURN Ever wondered how Zoom or Google Meet works under the hood? I built a full‑stack video calling app using MERN + WebRTC + Socket.io – and you can too. Here's the high-level architecture: Frontend: React (Vite) + WebRTC APIs Backend: Node.js + Express + Socket.io (signaling) Database: MongoDB (call logs, auth) NAT Traversal: STUN/TURN servers 🔁 How It Works Users join a room via Socket.io WebRTC exchanges SDP offers/answers ICE candidates find the best connection path Media streams flow peer-to-peer (or via TURN if direct fails) 💡 Why This Matters Learn real‑time P2P media without third‑party APIs Understand signaling, ICE, and NAT traversal Build a foundation for Zoom‑like apps, telehealth, or collaboration tools 🛠️ Tech Stack Highlights RTCPeerConnection & getUserMedia Custom useWebRTC React hook Socket.io room‑based signaling Optional TURN relay for production 🚀 Get the Full Code & Step‑by‑Step Guide The complete tutorial…