m3u8 relative url fixed (urls starting with // and urls with query string)

internal/hls/client.go

@@ -34,12 +34,15 @@ func clientURLAbsolute(base *url.URL, relative string) (*url.URL, error) {
 		return nil, err
 	}
 
-	if !u.IsAbs() {
+	if strings.HasPrefix(relative, "//") {
+		u.Scheme = base.Scheme
+	} else if !u.IsAbs() {
 		u = &url.URL{
 			Scheme:   base.Scheme,
 			User:     base.User,
 			Host:     base.Host,
-			Path:   gopath.Join(gopath.Dir(base.Path), relative),
+			Path:     gopath.Join(gopath.Dir(base.Path), u.Path),
+			RawQuery: u.RawQuery,
 		}
 	}