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    use std::sync::Arc;
    use std::net::Shutdown;
    use std::io::{Read, Write, Error};
    use futures::Poll;
    use tokio_io::{AsyncRead, AsyncWrite};
    use tokio_core::net::TcpStream;

    pub struct SharedTcpStream {
    	io: Arc<TcpStream>,
    }

    impl SharedTcpStream {
    	pub fn new(a: Arc<TcpStream>) -> Self {
    		SharedTcpStream {
    			io: a,
    		}
    	}

    	pub fn shutdown(&self) {
    		// error is irrelevant here, the connection is dropped anyway
    		let _ = self.io.shutdown(Shutdown::Both);
    	}
    }

    impl From<TcpStream> for SharedTcpStream {
    	fn from(a: TcpStream) -> Self {
    		SharedTcpStream::new(Arc::new(a))
    	}
    }

    impl Read for SharedTcpStream {
    	fn read(&mut self, buf: &mut [u8]) -> Result<usize, Error> {
    		Read::read(&mut (&*self.io as &TcpStream), buf)
    	}
    }

    impl AsyncRead for SharedTcpStream {}

    impl AsyncWrite for SharedTcpStream {
    	fn shutdown(&mut self) -> Poll<(), Error> {
    		self.io.shutdown(Shutdown::Both).map(Into::into)
    	}
    }

    impl Write for SharedTcpStream {
    	fn write(&mut self, buf: &[u8]) -> Result<usize, Error> {
    		Write::write(&mut (&*self.io as &TcpStream), buf)
    	}

    	fn flush(&mut self) -> Result<(), Error> {
    		Write::flush(&mut (&*self.io as &TcpStream))
    	}
    }

    impl Clone for SharedTcpStream {
    	fn clone(&self) -> Self {
    		SharedTcpStream::new(self.io.clone())
    	}
    }

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