Enabling COOP/COEP without touching the server

Enabling COOP/COEP without touching the server

摘要

Ever since the rather impressive Meltdown and Spectre attacks, browser vendors had to clamp down on shared memory and high resolution timers. While this conveniently means that the casual user doesn't have to work about phantom trolleys, it can be an irritating restriction for a developer. Some APIs got limited, while others were completely disabled unless one does a little dance to appease the web browser.

This means that certain web-applications have an additional hurdle to overcome.

A few examples of web-applications that have this problem are in-browser video converters using ffmpeg.wasm, a web-based notebook that supports Python and multithreaded Emscripten applications.