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-[/
- / Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- /
- / 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:WaitHandler Wait handler requirements]
-
-A wait handler must meet the requirements for a [link
-asio.reference.Handler handler]. A value `h` of a wait handler class
-should work correctly in the expression `h(ec)`, where `ec` is an lvalue of
-type `const error_code`.
-
-[heading Examples]
-
-A free function as a wait handler:
-
- void wait_handler(
- const asio::error_code& ec)
- {
- ...
- }
-
-A wait handler function object:
-
- struct wait_handler
- {
- ...
- void operator()(
- const asio::error_code& ec)
- {
- ...
- }
- ...
- };
-
-A lambda as a wait handler:
-
- socket.async_wait(...,
- [](const asio::error_code& ec)
- {
- ...
- });
-
-A non-static class member function adapted to a wait handler using
-`std::bind()`:
-
- void my_class::wait_handler(
- const asio::error_code& ec)
- {
- ...
- }
- ...
- socket.async_wait(...,
- std::bind(&my_class::wait_handler,
- this, std::placeholders::_1));
-
-A non-static class member function adapted to a wait handler using
-`boost::bind()`:
-
- void my_class::wait_handler(
- const asio::error_code& ec)
- {
- ...
- }
- ...
- socket.async_wait(...,
- boost::bind(&my_class::wait_handler,
- this, asio::placeholders::error));
-
-[endsect]