Perhaps even:

---

Your HTTP server should respond to:

```
POST /test3 HTTP/1.1

{"num":123}
```

with:

```
HTTP/1.1 200k Ok

{"num":123}
```

But keep in mind, the value for `num` could be any number, and we expect you to send back the value that you're given in the request.

---

I may worry too much about pseudo-code, though, so, again, feel free to dispute this view.