handler_type

(Deprecated: Use two-parameter version of async_result.) Default handler type traits provided for all completion token types.

template<
    typename CompletionToken,
    typename Signature,
    typename  = void>
struct handler_type

Types

Name	Description
type	The handler type for the specific signature.

The handler_type traits class is used for determining the concrete handler type to be used for an asynchronous operation. It allows the handler type to be determined at the point where the specific completion handler signature is known.

This template may be specialised for user-defined completion token types.

Requirements

Header: asio/handler_type.hpp

Convenience header: asio.hpp