Function http_serve::serve

pub fn serve<E: Entity, P: Payload + From<Box<Stream<Item = E::Data, Error = E::Error> + Send>>, PI>(
    e: E, 
    req: &Request<PI>
) -> Response<P>

Serves GET and HEAD requests for a given byte-ranged entity. Handles conditional & subrange requests. The caller is expected to have already determined the correct entity and appended Expires, Cache-Control, and Vary headers if desired.