electron
diff --git a/‎shell/browser/api/electron_api_data_pipe_holder.cc‎
Lines changed: 4 additions & 1 deletion b/‎shell/browser/api/electron_api_data_pipe_holder.cc‎
Lines changed: 4 additions & 1 deletion
diff --git a/‎spec-main/api-session-spec.ts‎
Lines changed: 44 additions & 0 deletions b/‎spec-main/api-session-spec.ts‎
Lines changed: 44 additions & 0 deletions
@@ -86,8 +86,11 @@ class DataPipeReader {
     if (result == MOJO_RESULT_OK) {  // success
       remaining_size_ -= length;
       head_ += length;
-      if (remaining_size_ == 0)
+      if (remaining_size_ == 0) {
         OnSuccess();
+      } else {
+        handle_watcher_.ArmOrNotify();
+      }
     } else if (result == MOJO_RESULT_SHOULD_WAIT) {  // IO pending
       handle_watcher_.ArmOrNotify();
     } else {  // error
 
@@ -529,6 +529,50 @@ describe('session module', () => {
     });
   });
 
+  describe('ses.getBlobData2()', () => {
+    const scheme = 'cors-blob';
+    const protocol = session.defaultSession.protocol;
+    const url = `${scheme}://host`;
+    after(async () => {
+      await protocol.unregisterProtocol(scheme);
+    });
+    afterEach(closeAllWindows);
+
+    it('returns blob data for uuid', (done) => {
+      const content = `<html>
+                       <script>
+                       let fd = new FormData();
+                       fd.append("data", new Blob(new Array(65_537).fill('a')));
+                       fetch('${url}', {method:'POST', body: fd });
+                       </script>
+                       </html>`;
+
+      protocol.registerStringProtocol(scheme, (request, callback) => {
+        try {
+          if (request.method === 'GET') {
+            callback({ data: content, mimeType: 'text/html' });
+          } else if (request.method === 'POST') {
+            const uuid = request.uploadData![1].blobUUID;
+            expect(uuid).to.be.a('string');
+            session.defaultSession.getBlobData(uuid!).then(result => {
+              try {
+                const data = new Array(65_537).fill('a');
+                expect(result.toString()).to.equal(data.join(''));
+                done();
+              } catch (e) {
+                done(e);
+              }
+            });
+          }
+        } catch (e) {
+          done(e);
+        }
+      });
+      const w = new BrowserWindow({ show: false });
+      w.loadURL(url);
+    });
+  });
+
   describe('ses.setCertificateVerifyProc(callback)', () => {
     let server: http.Server;