Deployment

If you wish to deploy the code online to get your Public IP address then follow the steps.

module.exports = app;

add the following line to your code so that your code looks like this 

const app = require("express")().get("/*", (req, res) => {
  res.send({
    IP:
      req.headers["x-forwarded-for"]?.split(",").shift() ||
      req.socket?.remoteAddress,
  });
});
app.listen(3000, () => console.log("Listening on port 3000"));
module.exports = app;

(install vercel CLI and login to vercel with npm i -g vercel )

Make vercel.json in the root directory and paste the following code 

{
  "version": 2,
  "routes": [
    {
      "src": "/",
      "dest": "/api"
    }
  ],
  "builds": [
    {
      "src": "api/index.js",
      "use": "@vercel/node"
    }
  ]
  
}

 

Next, Deploy the code to vercel with 

vercel deploy

 

and Congrats you have an API that gives you your IP address

 

https://get-ip-eight.vercel.app/

 

https://get-ip-eight.vercel.app/api