return
			}
		}

		// Apply http tracing "middleware" based on presence of flag.
		var f2 http.HandlerFunc
		if handlerFlags.Has(traceAllFlag) {
			f2 = httpTraceAll(f)
		} else {
			f2 = httpTraceHdrs(f)
		}

		// call the final handler
		f2(w, r)
	}

	// Enable compression of responses based on presence of flag.
	if !handlerFlags.Has(noGZFlag) {
		handler = gzipHandler(handler)
	}