Plant a bug, then watch Doorbell find it.

A live run against PayPal's Sandbox; it takes a few minutes, because PayPal delivers and lists on its own clock. You place an order, plant a bug and the order, and Doorbell finds out whether the shop's books heard about it. Each bug is one we planted, and the shop is fictional.

Checking whether the live lane is running.

1Enter the token

The judge token opens a session on PayPal's Sandbox. It stays in this browser tab and is sent only to this site.

2Place an order

Buy something from the shop. PayPal takes test money.

3Turn on a bug

Pick one of the bugs we planted in the shop's , in its code or in its settings. The working handler is the fix.

Handler of the shopDropped after a 200 OK, planted by ushandlers/ack-drop.tsRejected with 401, planted by ushandlers/bad-body.tsA late payment wins, planted by ushandlers/last-write-wins.tsRejected after a settings change, planted by ushandlers/tidy.tsWorking handler, the fixhandlers/good.ts

4Refund it

Ask PayPal to refund the latest order. The shop's books are supposed to hear about it.

5Run Doorbell

Doorbell checks each at PayPal again and finds the . A gap is called only once PayPal has had time to deliver and list the event: from a few seconds to about a minute.

Nothing to trace yet

PayPal
Not traced yet
Doorbell
Not traced yet
Your shopMaple Mug
Not traced yet
Your books
Not traced yet

Times are UTC.

Nothing has been done in this session yet.