A simple Remote Procedure Call (RPC) implementation using Node.js, Express, and Axios. This project demonstrates how to perform RPC communication between a client and a server over HTTP using JSON, either on the same network or via tunnels like Ngrok.

RPC/
├── RPC-server/
│   ├── rpc-server.js
│   └── package.json
├── RPC-client/
│   ├── rpc-client.js
│   └── package.json

git clone https://github.com/FarhanTausif/RPC.git
cd RPC

cd RPC-server
npm install express body-parser dotenv ngrok 

node rpc-server.js

By default, the server runs at:
http://localhost:3000/rpc

If you're running across different networks, use Ngrok:

ngrok http 3000

Use the HTTPS forwarding URL from Ngrok (e.g., https://abc123.ngrok-free.app) in your client.

cd RPC-client
npm install

const SERVER_URL = "<server_ip_address>/rpc"; // Or your ngrok HTTPS URL

node rpc-client.js

The client sends a JSON request like:

{
  "method": "add",
  "params": [5, 3]
}

And the server responds with:

{
  "result": 8
}

• Node.js
• Express.js
• Axios
• Ngrok (optional for tunneling)
• body-parser
• dotenv