(Deprecated:
Use expiry()
.) Get the timer's expiry time relative to now.
duration expires_from_now() const; » more...
(Deprecated: Use expires_after()
.) Set the timer's expiry
time relative to now.
std::size_t expires_from_now( const duration & expiry_time); » more... std::size_t expires_from_now( const duration & expiry_time, asio::error_code & ec); » more...