Create and use isValidURL

outOfLineContent.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"fmt"
 	"mime"
-	"net/url"
 	"reflect"
 )
 
@@ -23,7 +22,7 @@ func newOutOfLineContent(mediaType string, content any) (*OutOfLineContent, erro
 		return nil, fmt.Errorf("content type %T incompatible with out of line content", content)
 	}
 
-	if _, err := url.ParseRequestURI(content.(string)); err != nil {
+	if !isValidURL(content.(URI)) {
 		return nil, errors.New("content not a valid uri")
 	}