How to get the IP address of a client in Node.js
Overview
In this shot, we will look at how to get an IP address in Node.js. We can achieve this using a typical Node.js server application and an express server.
The
address is an address given to a device connected to a network. IP internet protocol
Code
How to use req.socket.remoteAddress in a Node.js server
This method is a property of the socket property of the request object.
We can achieve this using the req.socket.remoteAddress or req.ip if you run an Express.js server.
const http = require("http");const requestListener = function (req, res) {res.end("Your IP Addresss is: " + req.socket.localAddress);};const server = http.createServer(requestListener);const PORT = process.env.PORT || 3000;server.listen(PORT, () => {console.log(`Server is running on port ${PORT}`);});
Explanation
From the code above, we created an port 3000.
Hence, we can get the IP address of a user by using the req.socket.localAddress.
How to use req.ip in an Express.js server
When you run an Express.js server, it is easy to get the IP address of a client.
Take a look at the code below.
var app = require("express")();app.get("/", function (req, res) {console.log(req.socket.remoteAddress);console.log(req.ip);res.send("your IP is: " + req.ip);});const PORT = process.env.PORT || 3000;app.listen(PORT, () => {console.log("server running on port: " + PORT);});
Explanation
The code above is similar to the previous one. The only difference is that the latter is created using the Express.js framework of Node.Js.
The easy way to get a client’s IP address is by getting the ip property of the request object, req.
Live code demo
View a live demo here on my replit.
