    # File lib/phusion_passenger/rack/request_handler.rb, line 67
            def process_request(env, input, output, full_http_response)
                    rewindable_input = PhusionPassenger::Utils::RewindableInput.new(input)
                    begin
                            env[RACK_VERSION]      = RACK_VERSION_VALUE
                            env[RACK_INPUT]        = rewindable_input
                            env[RACK_ERRORS]       = STDERR
                            env[RACK_MULTITHREAD]  = false
                            env[RACK_MULTIPROCESS] = true
                            env[RACK_RUN_ONCE]     = false

                            if env[HTTP_CONTENT_LENGTH] && env[CONTENT_LENGTH]
                                    env.delete(HTTP_CONTENT_LENGTH)
                            elsif env[HTTP_CONTENT_LENGTH] && !env[CONTENT_LENGTH]
                                    env[CONTENT_LENGTH] = env[HTTP_CONTENT_LENGTH]
                                    env.delete(HTTP_CONTENT_LENGTH)
                            end
                            if env[HTTP_CONTENT_TYPE] && env[CONTENT_TYPE]
                                    env.delete(HTTP_CONTENT_TYPE)
                            elsif env[HTTP_CONTENT_TYPE] && !env[CONTENT_TYPE]
                                    env[CONTENT_TYPE] = env[HTTP_CONTENT_TYPE]
                                    env.delete(HTTP_CONTENT_TYPE)
                            end

                            if env[HTTPS] == YES || env[HTTPS] == ON || env[HTTPS] == ONE
                                    env[RACK_URL_SCHEME] = HTTPS_DOWNCASE
                            else
                                    env[RACK_URL_SCHEME] = HTTP
                            end

                            status, headers, body = @app.call(env)
                            begin
                                    if full_http_response
                                            output.write("HTTP/1.1 #{status.to_i.to_s} Whatever#{CRLF}")
                                            output.write("Connection: close#{CRLF}")
                                    end
                                    headers_output = [
                                            STATUS, status.to_i.to_s, CRLF,
                                            X_POWERED_BY, @passenger_header, CRLF
                                    ]
                                    headers.each do |key, values|
                                            if values.is_a?(String)
                                                    values = values.split(NEWLINE)
                                            end
                                            values.each do |value|
                                                    headers_output << key
                                                    headers_output << NAME_VALUE_SEPARATOR
                                                    headers_output << value
                                                    headers_output << CRLF
                                            end
                                    end
                                    headers_output << CRLF

                                    if body.is_a?(Array)
                                            # The body may be an ActionController::StringCoercion::UglyBody
                                            # object instead of a real Array, even when #is_a? claims so.
                                            # Call #to_a just to be sure.
                                            output.writev2(headers_output, body.to_a)
                                    elsif body.is_a?(String)
                                            headers_output << body
                                            output.writev(headers_output)
                                    else
                                            output.writev(headers_output)
                                            if body
                                                    body.each do |s|
                                                            output.write(s)
                                                    end
                                            end
                                    end
                            ensure
                                    body.close if body.respond_to?(:close)
                            end
                    ensure
                            rewindable_input.close
                    end
            end