[/
    Copyright (c) 2023 Mireo

    Distributed under the Boost Software License, Version 1.0. (See accompanying
    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
]

[section:is_authenticator is_authenticator concept]

A type `Authenticator` satisfies `is_authenticator` concept if it satisifes the requirements listed below.

[table
	[[operation] [type] [arguments]]
	[
		[```a.async_auth(step, data, h)```]
		[`void`]
		[
[*`step`] is [reflink2 auth_step_e async_mqtt5::auth_step_e] that specifies current authentication stage.

[*`data`] is `std::string`, server's authentication data.

[*`h`] is [asioreflink any_completion_handler any_completion_handler] with signature `void(__ERROR_CODE__ ec, std::string client_data)`. If `ec` is non-trivial, authentication is aborted.
		]
	]
	[
		[```a.method()```]
		[`std::string_view`, authentication method]
		[]
	]
]


[endsect]