1 files changed, 50 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/private-network-access/resources/shared-worker-blob-fetcher.html b/testing/web-platform/tests/fetch/private-network-access/resources/shared-worker-blob-fetcher.html
new file mode 100644
index 0000000000..a79869b2f9
--- /dev/null
+++ b/testing/web-platform/tests/fetch/private-network-access/resources/shared-worker-blob-fetcher.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>SharedWorker Blob Fetcher</title>
+<script>
+  window.addEventListener("message", function (evt) {
+    let { url } = evt.data;
+
+    const workerScriptContent = `
+      async function doFetch(url) {
+        const response = await fetch(url);
+        const body = await response.text();
+        return {
+          status: response.status,
+          body,
+        };
+      }
+
+      async function fetchAndPost(url, port) {
+        try {
+          const message = await doFetch(url);
+          port.postMessage(message);
+        } catch(e) {
+          port.postMessage({ error: e.name });
+        }
+      }
+
+      const url = "${url}";
+
+      self.addEventListener("connect", async (evt) => {
+        await fetchAndPost(url, evt.ports[0]);
+      });
+    `;
+    const blob =
+        new Blob([workerScriptContent], {type: 'application/javascript'});
+    const workerScriptUrl = URL.createObjectURL(blob);
+
+    const worker = new SharedWorker(workerScriptUrl);
+
+    URL.revokeObjectURL(workerScriptUrl);
+
+    worker.onerror = (evt) => {
+      parent.postMessage({ error: evt.message || "unknown error" }, "*");
+    };
+
+    worker.port.addEventListener("message", (evt) => {
+      parent.postMessage(evt.data, "*");
+    });
+    worker.port.start();
+  });
+</script>