Inconsistency in the behavior of session.req_header().uri

Hello,

I have noticed that `session.req_header().uri` can be quite confusing in its behavior, as it produces different results depending on whether the request is HTTP or HTTPS.

**Example:**

```rust
// For the same request, once over HTTP and once over HTTPS
let url = session.req_header().uri.to_string();
```

* **HTTP**: returns
`/test.html`

* **HTTPS**: returns
`https://127.0.0.1:9002/test.html`

Wouldn’t it be better to standardize this behavior?