Build Your Own Ngrok HTTP Tunnel: NodeJS, WebSocket & React

Build a production-ready HTTP tunneling app like ngrok using Node.js, WebSocket & React — from CLI tool to web dashboard

What you’ll learn
✓ Build a production-grade CLI tool with Commander.js and TypeScript
✓ Implement bidirectional WebSocket communication with SocketIO
✓ Design custom network protocols for tunneling and request forwarding
✓ Create HTTP reverse proxy logic with request/response streaming
✓ Handle agent reconnection, heartbeats, and connection health monitoring
✓ Design PostgreSQL schemas for tunnels, users, tokens, and request logs
✓ Implement token-based authentication with JWT sessions
✓ Build real-time metrics collection (RPS, bandwidth, latency, error rates)
✓ Create React dashboard with live connection visualization using React Flow
✓ Deploy a multi-component system in production

Requirements
● Comfortable with JavaScript and TypeScript
● Basic understanding of Node.js and Express
● Little or no experience with React
● NodeJS and NPM
● A code editor

Description
Build an Ngrok-Style HTTP Tunneling Platform with Node.js, WebSockets & React

Have you ever wondered how tools like ngrok, localtunnel, or Cloudflare Tunnel expose your localhost to the internet?

In this hands-on course, you will build your own HTTP tunneling application from scratch using Node.js, WebSockets, PostgreSQL, and React.

Instead of simply using tunneling tools, you will learn how they work internally by implementing a complete production-grade tunneling system step by step.

This course focuses on real-world system architecture, giving you practical experience building a developer infrastructure tool similar to ngrok.

What You Will Build

During the course, you will design and implement a complete three-component system

Tunnel Agent (CLI Application)
A Node.js command-line tool that runs locally on a developer’s machine and creates a secure tunnel connection to the internet.

Tunnel Server (Relay Server)
A Node.js server responsible for managing tunnel connections, receiving public traffic, and routing HTTP requests to the connected agent.

Real-Time Monitoring Dashboard
A React application that visualizes tunnel connections and request activity in real time.

By the End of the Course

You will have built a fully functional HTTP tunneling platform, including

• a Node.js CLI tunnel agent

• a tunnel relay server

• a React real-time monitoring dashboard

You will also gain practical experience designing networked backend systems and developer infrastructure tools that can be showcased in your portfolio or extended into a real product.

Who this course is for
■ Full-stack developers who want to advance their skills
■ Backend engineers looking to understand production infrastructure and system design
■ Job seekers who need a standout portfolio project for interviews
■ Frontend engineers looking to level up on their expertise

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