1 files changed, 15 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/private-network-access/resources/socket-opener.html b/testing/web-platform/tests/fetch/private-network-access/resources/socket-opener.html
new file mode 100644
index 0000000000..48d27216be
--- /dev/null
+++ b/testing/web-platform/tests/fetch/private-network-access/resources/socket-opener.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>WebSocket Opener</title>
+<script>
+  window.addEventListener("message", function (event) {
+    const socket = new WebSocket(event.data);
+
+    socket.onopen = () => {
+      parent.postMessage("open", "*");
+    };
+    socket.onclose = (evt) => {
+      parent.postMessage(`close: code ${evt.code}`, "*");
+    };
+  });
+</script>