proxy.pipeline.transform(async (chunk, metadata) => if (metadata.isResponse && metadata.headers['content-type'] === 'application/json') const data = JSON.parse(chunk.toString()); delete data.creditCard; return JSON.stringify(data);
Traditional proxies act as intermediaries that fully ingest a request, parse its headers, open a secondary connection to the destination, and pipe the response back. This process is highly CPU-intensive and memory-bound.
: Users may face persistent CAPTCHA challenges or phone verification requests that are difficult to bypass automatically. scramjet proxy
| Feature | | Ultraviolet | Rammerhead | Stomp | | :--- | :--- | :--- | :--- | :--- | | Status | Actively maintained | Discontinued, succeeded by Scramjet | Alternative | Alternative (sandboxed iframe) | | Architecture | Interception + rewriting, WASM, Service Worker | Service Worker | Iframe-based | Sandboxed iframes, no Service Worker | | Technologies | Rust, WebAssembly, JS | JavaScript | JavaScript | JavaScript | | Performance | High (WASM) | Moderate (compared to Scramjet) | Moderate | High (simple architecture) | | Stealth | High (rewrites JS to evade detection) | Moderate | Low (iframe based) | Moderate | | CAPTCHA Support | Yes | Yes | Unclear | Unclear | | Setup Complexity | Easy | Moderate | Moderate | Easy | | WebSocket Support | Yes | Yes | Limited | No | | CORS Bypass | Yes | Yes | Limited | Limited | | Use Case | Modern, high-stealth proxying | Legacy systems, educational | Simple unblocking | Lightweight, simple proxying |
proxy.on('request', async (req, ctx) => const variant = Math.random() < 0.1 ? 'new-backend' : 'stable'; ctx.upstream = variant === 'new-backend' ? 'https://beta-api.example.com' : 'https://api.example.com'; ); | Feature | | Ultraviolet | Rammerhead |
Modern websites use sophisticated fingerprints to block scrapers. A Scramjet proxy setup often integrates with networks or Rotating Datacenter IPs. Because the Scramjet framework is highly customizable, you can programmatically change headers, cookies, and TLS fingerprints on the fly to mimic human behavior. 3. Real-Time Data Transformation
The proxy fetches the content, rewrites URLs, headers, and scripts to ensure the site functions properly through the proxy. A Scramjet proxy setup often integrates with networks
, a tool designed to cut through corporate firewalls like a hot blade through silk [2].