CollectHeadersToLog returns an ordered slice of slices of headers to be logged and returns a unique, ordered slice of headers to be logged.

ReadResponseWithTimeout extends http.ReadResponse but it utilizes a timeout.

AddHeaderIfNotPresentRewriter: Adds headers only if they are not present in the current http.Header.

RemoveHeaderRewriter: Removes any value associated to a header The http.Header must be built using the method Add() to canonalize the keys.