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Setting up a basic server

Setting up a basic server in Node.js is straightforward. Here’s a step-by-step guide to help you get started:

1. Install Node.js

First, ensure you have Node.js installed on your system. You can download it from the official Node.js website.
Verify the installation by running the following commands in your terminal:
```
node -v
npm -v
```

2. Create a New Directory for Your Project

Create a new directory for your server and navigate into it:
```
mkdir my-basic-server
cd my-basic-server
```

3. Initialize a Node.js Project

Initialize a new Node.js project by running:
```
npm init -y
```
This will create a package.json file with default settings.

4. Create the Server File

Create a new file called server.js:
```
touch server.js
```

5. Write Basic Server Code

Open server.js in your favorite text editor and write the following code:

// Import the HTTP module
const http = require('http');

// Define the hostname and port
const hostname = '127.0.0.1';
const port = 3000;

// Create the server
const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello, World!\n');
});

// Start the server
server.listen(port, hostname, () => {
  console.log(`Server running at http://${hostname}:${port}/`);
});

6. Run the Server

Run the server using Node.js:
```
node server.js
```
You should see the following output in your terminal:
```
Server running at http://127.0.0.1:3000/
```

7. Test the Server

Open your web browser and navigate to http://127.0.0.1:3000/.
You should see the message "Hello, World!" displayed in your browser.

Explanation of the Code:

http.createServer(): This method creates an HTTP server that listens to server requests.
req and res: The req object represents the request from the client, and the res object is the response that will be sent back.
res.statusCode = 200;: Sets the HTTP status code to 200, indicating success.
res.setHeader('Content-Type', 'text/plain');: Sets the response header to indicate the content type.
res.end('Hello, World!\n');: Sends the response "Hello, World!" and ends the request.

Now you have a basic server running in Node.js!

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