Add into_error

        &self.error

    }

    /// Consumes `self`, returning its error.

    pub fn into_error(self) -> Error {

        self.error

    }

    /// Restarts the handshake process.

    pub fn handshake(mut self) -> Result<SslStream<S>, HandshakeError<S>> {

        let ret = unsafe { ffi::SSL_do_handshake(self.stream.ssl.as_ptr()) };