Quickly stream a file a over the network.

stream.js

/*
Stream.js
Descriptiopn: Quickly stream a file over the network
Dependency: npm i -g http
Run Syntax: stream.js <filename>
Author: @furaar
*/
const http = require('http');
const fs = require('fs');
const path = require('path');

// Get the filename from command-line arguments
const args = process.argv.slice(2);
if (args.length === 0) {
    console.error('Please provide a filename as an argument');
    process.exit(1);
}

const filePath = path.join(__dirname, args[0]); // Use the provided filename

const server = http.createServer((req, res) => {
    if (req.method === 'GET' && req.url === '/file') {
        fs.stat(filePath, (err, stats) => {
            if (err) {
                console.error('File stat error:', err);
                res.writeHead(500, { 'Content-Type': 'text/plain' });
                res.end('Internal Server Error');
                return;
            }

            res.writeHead(200, {
                'Content-Type': 'application/octet-stream',
                'Content-Length': stats.size,
                'Content-Disposition': 'attachment; filename=' + path.basename(filePath)
            });

            const readStream = fs.createReadStream(filePath);

            // Handle read stream errors
            readStream.on('error', (err) => {
                console.error('File read error:', err);
                res.end('Internal Server Error');
            });

            // Pipe the file stream to the response
            readStream.pipe(res);
        });
    } else {
        res.writeHead(404, { 'Content-Type': 'text/plain' });
        res.end('Not Found');
    }
});

const PORT = 3000;
server.listen(PORT, () => {
    console.log(`Server is listening on port ${PORT}`);
});