How to stream response body

[jgrund]

What's the best way to stream a response body using 0.10.0-alpha?

I know there is access to the chunks of a response with https://docs.rs/reqwest/0.10.0-alpha.1/reqwest/struct.Response.html#method.chunk but I'd like to access the Decoder to use the Stream trait.

Previously, this could be done using into_body, but there does not appear to be an equivalent.

[seanmonstar]

For now, I'm reluctant to expose a Stream interface. But it's fairly straight-forward to create one using the async fn chunk with unfold:

let stream = futures::stream::unfold(resp, |mut resp| async move {
    let result = resp.chunk().await;
    match result {
        Ok(Some(chunk)) => Some((Ok(chunk), resp)),
        Ok(None) => None,
        Err(err) => Some((Err(err), resp)),
    }
});