A request/response rewriting HTTP proxy. A Rack app.

Subclass Rack::Proxy and provide your rewrite_env and rewrite_response methods.

Example:

class Foo < Rack::Proxy

  def rewrite_env(env)
    env["HTTP_HOST"] = "example.com"

    env
  end

  def rewrite_response(triplet)
    status, headers, body = triplet

    headers["X-Foo"] = "Bar"

    triplet
  end

end

See tests for more examples.