authTypeStreamingUnsignedTrailer
)

// Get request authentication type.
func getRequestAuthType(r *http.Request) (at authType) {
	if r.URL != nil {
		var err error
		r.Form, err = url.ParseQuery(r.URL.RawQuery)
		if err != nil {
			authNLogIf(r.Context(), err)
			return authTypeUnknown
		}
	}
	if isRequestSignatureV2(r) {
		return authTypeSignedV2
	} else if isRequestPresignedSignatureV2(r) {

pkg net/textproto, type Reader struct, R *bufio.Reader
pkg net/textproto, type Writer struct
pkg net/textproto, type Writer struct, W *bufio.Writer
pkg net/url, func Parse(string) (*URL, error)
pkg net/url, func ParseQuery(string) (Values, error)
pkg net/url, func ParseRequestURI(string) (*URL, error)
pkg net/url, func QueryEscape(string) string
pkg net/url, func QueryUnescape(string) (string, error)