TestCafe Hammerhead Proxy

testcafe-hammerhead is a robust, low-level web proxy library serving as the core engine for the TestCafe end-to-end testing framework. It functions as a URL-rewriting proxy, transparently modifying URLs within proxied web pages and intercepting access to URL-containing properties to provide original values, making it appear to the client that the page is hosted at its original location. The current stable version is 31.7.7, with frequent patch and minor releases to address bugs, security vulnerabilities, and improve compatibility. Key differentiators include its ability to handle HTTP/HTTPS, WebSockets, EventSource, and file uploads, along with extensive request and response modification capabilities. It is primarily used programmatically to establish and configure proxy servers for web traffic manipulation.