Build an Express middleware to log incoming HTTP requests to the server.

Question

Aryan Kumar · Answer

Sure, here is the code for an Express middleware to log incoming HTTP requests to the server:

JavaScript

const express = require("express");

const logger = (req, res, next) => {
  const timestamp = new Date().toISOString();
  const method = req.method;
  const url = req.url;
  const ip = req.ip;

  console.log(`${timestamp} ${method} ${url} ${ip}`);
  next();
};

const app = express();

app.use(logger);

app.listen(3000, () => {
  console.log("Server started on port 3000");
});

This code first imports the express module. Then, it defines a middleware function called logger. The logger function takes three arguments: the request object, the response object, and the next middleware function.

The logger function logs the following information about the request:

The timestamp of the request
The HTTP method of the request
The URL of the request
The IP address of the client

The logger function then calls the next() function to pass control to the next middleware function in the stack.

Finally, the app creates a route that listens on the / path. This route uses the logger middleware to log incoming requests.

To run this code, you can save it as a file called app.js and then run it from the command line:

node app.js

This will start the Express server on port 3000. You can then make requests to the server and the logger middleware will log the requests to the console.

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Build an Express middleware to log incoming HTTP requests to the server.

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