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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]