origAuth := req.Header.Get("Authorization")
	if origAuth != "" {
		req.Header.Set("Authorization", "**REDACTED**")
	}

	// Only display request header.
	reqTrace, err := httputil.DumpRequestOut(req, false)
	if err != nil {
		return
	}

	// Write request to trace output.
	_, err = fmt.Fprint(c.TraceOutput, string(reqTrace))
	if err != nil {
		return
	}

pkg net/http/httptest, type Server struct, TLS *tls.Config
pkg net/http/httptest, type Server struct, URL string
pkg net/http/httputil, func DumpRequest(*http.Request, bool) ([]uint8, error)
pkg net/http/httputil, func DumpRequestOut(*http.Request, bool) ([]uint8, error)
pkg net/http/httputil, func DumpResponse(*http.Response, bool) ([]uint8, error)
pkg net/http/httputil, func NewChunkedReader(io.Reader) io.Reader