Homework & Coding Practice

Homework/Practice Coding Assignment (20-min)

Expand Your HTTP Server to Serve Different Static Files Based on the URL

Steps:

1. Step 1: Create a file fileServer.js.

2. Step 2: Add the following code:

   javascript코드 복사const http = require('http');
   const fs = require('fs');
   const path = require('path');
   
   const server = http.createServer((req, res) => {
     const filePath = path.join(__dirname, req.url === '/' ? 'index.html' : req.url);
   
     fs.readFile(filePath, (err, data) => {
       if (err) {
         res.writeHead(404, { 'Content-Type': 'text/plain' });
         return res.end('404 Not Found');
       }
   
       res.writeHead(200, { 'Content-Type': 'text/html' });
       res.end(data);
     });
   });
   
   server.listen(3000, () => {
     console.log('File server running at http://localhost:3000');
   });

3. Step 3: Create sample HTML files:

   • index.html:

     html코드 복사<h1>Welcome to the Home Page</h1>

   • about.html:

     html코드 복사<h1>About Us</h1>

4. Step 4: Run the server:

   bash코드 복사node fileServer.js

5. Step 5: Test the server:

   • Visit http://localhost:3000/ to view the Home Page.

   • Visit http://localhost:3000/about.html to view the About Page.

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Research and Write a Short Note on Streams:

• Key Points:

  1. Streams process data in chunks, improving memory usage for large files.

  2. Types of streams: Readable, Writable, Duplex, and Transform.

  3. Example use cases: File I/O, video streaming, and real-time data processing.

Expected Outcomes

1. Students become proficient in using the fs, http, and stream modules for practical tasks.

2. Hands-on activities prepare students for server-side programming challenges.

3. Homework reinforces their understanding of file serving and stream performance benefits.