Add func for easy double-knocking of requests

web/shared/clientRfc9421.go

@@ -29,6 +29,25 @@ Links for home:
 - https://datatracker.ietf.org/doc/html/rfc9421
 */
 
+// Perform a signed request. Tries RFC9421 first and on fail cavage.
+// This double-knocking is because implementations currently use cavage (a precursor to RFC9421).
+// However, Cavage is deprecated now and the RFC should be used instead. And so
+// implementations have slowly begun to implement the RFC in addition to cavage
+//
+// Returns the unmodified response, if the request completed with RFC signing and an error, if any
+func RequestSigned(
+	method, target string,
+	body []byte,
+	actor *models.User,
+) (response *http.Response, wasRfc9421 bool, err error) {
+	res, err := RequestSignedRFC9421(method, target, body, actor)
+	if err == nil {
+		return res, true, nil
+	}
+	res, err = RequestSignedCavage(method, target, body, actor)
+	return res, false, err
+}
+
 // Perform a request, signing it as specified in RFC 9421
 func RequestSignedRFC9421(
 	method, target string,