Normal- - Tarzan -enlace De Descarga

const stream = fs.createReadStream(filePath, start, end ); stream.pipe(res); else // Full download res.writeHead(200, 'Content-Length': total, 'Content-Type': 'application/octet-stream', 'Content-Disposition': `attachment; filename="$path.basename(filePath)"`, 'Accept-Ranges': 'bytes', 'Cache-Control': 'no-store' );

// ---- Helper: validate token ---- function validateToken(token) try const decoded = Buffer.from(token, 'base64url').toString('utf8'); const [fileId, expires, signature] = decoded.split(':'); if (Date.now() / 1000 > Number(expires)) return null; // expired Tarzan -enlace de descarga normal-

const stream = fs.createReadStream(filePath); stream.pipe(res); const stream = fs

// ---- Rate limiting (5 downloads / minute per IP) ---- const downloadLimiter = rateLimit( windowMs: 60_000, max: 5, message: error: 'Too many download attempts, please try again later.' ); const stream = fs.createReadStream(filePath

// ---- Route: GET /download/:fileId ---- router.get('/download/:fileId', downloadLimiter, async (req, res) => const fileId = req.params; const token = req.query.token;

// 1️⃣ Verify token (if you require signed URLs) if (process.env.REQUIRE_SIGNED_URLS === 'true')