What does a rack handler do exactly, i.e. can someone explain in pseudo-code the steps that a rack handler takes to deliver a result for a request?
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What does a rack handler do exactly, i.e. can someone explain in pseudo-code the steps that a rack handler takes to deliver a result for a request?
It processes the HTTP request headers and content, instantiating a Request object. It then passes the Request object through the middleware then to the rack application. The rack application instantiates a Response object and sends it back up through the middleware, and the hander turns it into HTTP response headers and content.