62 lines
1.6 KiB
Plaintext
62 lines
1.6 KiB
Plaintext
[/
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/ Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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/
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/ Distributed under the Boost Software License, Version 1.0. (See accompanying
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/ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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/]
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[section:MoveAcceptHandler Move accept handler requirements]
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A move accept handler must meet the requirements for a [link
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boost_asio.reference.Handler handler]. A value `h` of a move accept handler class
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should work correctly in the expression `h(ec, s)`, where `ec` is an lvalue of
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type `const error_code` and `s` is an lvalue of the nested type
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`Protocol::socket` for the type `Protocol` of the socket class template.
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[heading Examples]
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A free function as a move accept handler:
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void accept_handler(
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const boost::system::error_code& ec, boost::asio::ip::tcp::socket s)
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{
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...
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}
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A move accept handler function object:
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struct accept_handler
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{
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...
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void operator()(
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const boost::system::error_code& ec, boost::asio::ip::tcp::socket s)
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{
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...
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}
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...
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};
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A lambda as a move accept handler:
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acceptor.async_accept(...,
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[](const boost::system::error_code& ec, boost::asio::ip::tcp::socket s)
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{
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...
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});
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A non-static class member function adapted to a move accept handler using
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`std::bind()`:
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void my_class::accept_handler(
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const boost::system::error_code& ec, boost::asio::ip::tcp::socket socket)
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{
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...
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}
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...
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boost::asio::async_accept(...,
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std::bind(&my_class::accept_handler,
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this, std::placeholders::_1,
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std::placeholders::_2));
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[endsect]
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