https://www.phparch.com/article/what-can-the-nsa-teach-us-about-debugging/ By https://www.phparch.com/community/edward-barnard/ William F. Friedman wrote training materials teaching would-be cryptographers how to break encrypted messages.
This month we’re introducing PSR-15, which proposes standards for handling and responding to HTTP requests through request handlers and middleware. A request handler receives an HTTP message (see PSR-7 , processes the request, and returns a response.
There are two github repositories for this PSR: Server Request Handlers for Middleware (http-server-handler) and HTTP Server Middleware (http-server-middleware).