1 files changed, 34 insertions, 0 deletions
diff --git a/webAO/services/request.js b/webAO/services/request.js
index 6479dcc..5a060fd 100644
--- a/webAO/services/request.js
+++ b/webAO/services/request.js
@@ -4,6 +4,40 @@
  * @returns response data
  * @throws {Error} if status code is not 2xx, or a network error occurs
  */
+export async function requestBuffer(url) {
+  return new Promise((resolve, reject) => {
+    const xhr = new XMLHttpRequest();
+    xhr.responseType = 'arraybuffer';
+    xhr.addEventListener('error', () => {
+      const err = new Error(`Request for ${url} failed: ${xhr.statusText}`);
+      err.code = xhr.status;
+      reject(err);
+    });
+    xhr.addEventListener('abort', () => {
+      const err = new Error(`Request for ${url} was aborted!`);
+      err.code = xhr.status;
+      reject(err);
+    });
+    xhr.addEventListener('load', () => {
+      if (xhr.status < 200 || xhr.status >= 300) {
+        const err = new Error(`Request for ${url} failed with status code ${xhr.status}`);
+        err.code = xhr.status;
+        reject(err);
+      } else {
+        resolve(xhr.response);
+      }
+    });
+    xhr.open('GET', url, true);
+    xhr.send();
+  });
+}
+
+/**
+ * Make a GET request for a specific URI.
+ * @param {string} url the URI to be requested
+ * @returns response data
+ * @throws {Error} if status code is not 2xx, or a network error occurs
+ */
 const request = async (url) => new Promise((resolve, reject) => {
   const xhr = new XMLHttpRequest();
   xhr.responseType = 'text';