s

network.js

@@ -0,0 +1,19 @@
+
+const https = require('https');
+const fs = require('fs');
+function downloadFile(url, dest) {
+    return new Promise((resolve, reject) => {
+        const options = { headers: { 'User-Agent': 'Mozilla/5.0' } };
+        const request = https.get(url, options, (response) => {
+            if (response.statusCode === 301 || response.statusCode === 302) {
+                return downloadFile(response.headers.location, dest).then(resolve).catch(reject);
+            }
+            if (response.statusCode !== 200) { return reject(new Error(`Failed: ${response.statusCode}`)); }
+            const file = fs.createWriteStream(dest);
+            response.pipe(file);
+            file.on('finish', () => { file.close(() => resolve()); });
+        });
+        request.on('error', (err) => { if (fs.existsSync(dest)) fs.unlink(dest, () => {}); reject(err); });
+    });
+}
+module.exports = { downloadFile };