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    use std::io;
    use std::time::Duration;
    use futures::{Future, Select, Poll, Async};
    use tokio_core::reactor::{Handle, Timeout};

    type DeadlineBox<F> = Box<Future<Item = DeadlineStatus<<F as Future>::Item>, Error = <F as Future>::Error> + Send>;

    pub fn deadline<F, T>(duration: Duration, handle: &Handle, future: F) -> Result<Deadline<F>, io::Error>
    	where F: Future<Item = T, Error = io::Error> + Send + 'static, T: 'static {
    	let timeout: DeadlineBox<F> = Box::new(try!(Timeout::new(duration, handle)).map(|_| DeadlineStatus::Timeout));
    	let future: DeadlineBox<F> = Box::new(future.map(DeadlineStatus::Meet));
    	let deadline = Deadline {
    		future: timeout.select(future),
    	};
    	Ok(deadline)
    }

    pub enum DeadlineStatus<T> {
    	Meet(T),
    	Timeout,
    }

    pub struct Deadline<F> where F: Future + Send {
    	future: Select<DeadlineBox<F>, DeadlineBox<F>>,
    }

    impl<F, T> Future for Deadline<F> where F: Future<Item = T, Error = io::Error> + Send {
    	type Item = DeadlineStatus<T>;
    	type Error = io::Error;

    	fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
    		match self.future.poll() {
    			Ok(Async::Ready((result, _other))) => Ok(Async::Ready(result)),
    			Ok(Async::NotReady) => Ok(Async::NotReady),
    			Err((err, _other)) => Err(err),
    		}
    	}
    }

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