1 files changed, 24 insertions, 0 deletions
diff --git a/dom/webidl/WebTransportError.webidl b/dom/webidl/WebTransportError.webidl
new file mode 100644
index 0000000000..1484d65bf4
--- /dev/null
+++ b/dom/webidl/WebTransportError.webidl
@@ -0,0 +1,24 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* https://w3c.github.io/webtransport/#web-transport-error-interface */
+
+[Exposed=(Window,Worker), SecureContext, Pref="network.webtransport.enabled"]
+interface WebTransportError : DOMException {
+  constructor(optional WebTransportErrorInit init = {});
+
+  readonly attribute WebTransportErrorSource source;
+  readonly attribute octet? streamErrorCode;
+};
+
+dictionary WebTransportErrorInit {
+  [Clamp] octet streamErrorCode;
+  DOMString message;
+};
+
+enum WebTransportErrorSource {
+  "stream",
+  "session",
+};