Scramjet Web — Proxy

You can clone the repository and build it locally with the following commands found on the Scramjet GitHub :

git clone --recursive https://github.com/MercuryWorkshop/scramjet Install Dependencies: pnpm i Build the Rewriter: pnpm rewriter:build Build the Proxy: pnpm build Run the Server: pnpm dev

: Implementations leverage technologies like DPDK (Data Plane Development Kit) or RDMA (Remote Direct Memory Access) to move packets directly from NIC to proxy logic to egress NIC, bypassing the operating system kernel entirely. This removes context-switch overhead. scramjet web proxy

Unlike traditional proxies that may choke on heavy multimedia streams or high-concurrency API calls, Scramjet is built to be non-blocking. It is designed to pass traffic through a series of "transforms"—allowing users to inspect headers, modify payloads on the fly, or log specific patterns—all with negligible latency.

Benchmarks of experimental Scramjet-like proxies (e.g., modified versions of Envoy’s "tap filter" or custom eBPF-based forwarders) demonstrate remarkable gains: You can clone the repository and build it

In the landscape of modern web development and cybersecurity, the ability to inspect, modify, and replay HTTP traffic is paramount. While tools like Burp Suite and OWASP ZAP have long dominated the security sector, and browser DevTools handle frontend debugging, there remains a significant need for a bridge that combines high-performance automation with developer-centric workflows.

Despite its speed, the Scramjet proxy has significant drawbacks. By refusing to buffer, it cannot smooth out network jitter or retransmit lost packets at the proxy layer. It also cannot inspect or modify content—making it useless for content filtering, malware scanning, or protocol conversion. Furthermore, it amplifies congestion: if a downstream link is slower than the upstream, the proxy will simply drop packets (like a scramjet stalling at low speed) rather than queuing them. For these reasons, the Scramjet proxy is typically deployed traditional proxies, forming a hybrid "fast path / slow path" architecture. It is designed to pass traffic through a

One of Scramjet’s standout features is its extensibility. Rather than relying solely on a GUI, Scramjet allows developers to write scripts (often in JavaScript/Node.js or Python) that define how traffic is handled. This enables complex logic, such as: