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1c0f3c36be
The following example illustrates a simple asynchronous operation that
implements an echo protocol in terms of a coroutine:
template <typename CompletionToken>
auto async_echo(tcp::socket& socket,
CompletionToken&& token)
{
return boost::asio::async_initiate<
CompletionToken, void(boost::system::error_code)>(
boost::asio::experimental::co_composed<
void(boost::system::error_code)>(
[](auto state, tcp::socket& socket) -> void
{
try
{
state.throw_if_cancelled(true);
state.reset_cancellation_state(
boost::asio::enable_terminal_cancellation());
for (;;)
{
char data[1024];
std::size_t n = co_await socket.async_read_some(
boost::asio::buffer(data), boost::asio::deferred);
co_await boost::asio::async_write(socket,
boost::asio::buffer(data, n), boost::asio::deferred);
}
}
catch (const boost::system::system_error& e)
{
co_return {e.code()};
}
}, socket),
token, std::ref(socket));
}
60 lines
2.0 KiB
Plaintext
60 lines
2.0 KiB
Plaintext
#
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# Copyright (c) 2003-2022 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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import os ;
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import feature ;
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lib socket ; # SOLARIS
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lib nsl ; # SOLARIS
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lib ws2_32 ; # NT
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lib mswsock ; # NT
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lib ipv6 ; # HPUX
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lib network ; # HAIKU
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local USE_SELECT =
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<define>BOOST_ASIO_DISABLE_EPOLL
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<define>BOOST_ASIO_DISABLE_KQUEUE
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<define>BOOST_ASIO_DISABLE_IOCP
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;
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project
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: requirements
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<library>/boost/date_time//boost_date_time
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<library>/boost/system//boost_system
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<library>/boost/chrono//boost_chrono
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<define>BOOST_ALL_NO_LIB=1
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<threading>multi
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<target-os>solaris:<library>socket
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<target-os>solaris:<library>nsl
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<target-os>windows:<define>_WIN32_WINNT=0x0501
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<target-os>windows,<toolset>gcc:<library>ws2_32
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<target-os>windows,<toolset>gcc:<library>mswsock
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<target-os>windows,<toolset>gcc-cygwin:<define>__USE_W32_SOCKETS
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<target-os>hpux,<toolset>gcc:<define>_XOPEN_SOURCE_EXTENDED
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<target-os>hpux:<library>ipv6
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<target-os>haiku:<library>network
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;
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test-suite "asio-experimental" :
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[ run awaitable_operators.cpp ]
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[ run awaitable_operators.cpp : : : $(USE_SELECT) : awaitable_operators_select ]
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[ run basic_channel.cpp ]
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[ run basic_channel.cpp : : : $(USE_SELECT) : basic_channel_select ]
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[ run basic_concurrent_channel.cpp ]
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[ run basic_concurrent_channel.cpp : : : $(USE_SELECT) : basic_concurrent_channel_select ]
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[ run channel.cpp ]
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[ run channel.cpp : : : $(USE_SELECT) : channel_select ]
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[ run channel_traits.cpp ]
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[ run channel_traits.cpp : : : $(USE_SELECT) : channel_traits_select ]
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[ run co_composed.cpp ]
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[ run co_composed.cpp : : : $(USE_SELECT) : co_composed_select ]
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[ run concurrent_channel.cpp ]
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[ run concurrent_channel.cpp : : : $(USE_SELECT) : concurrent_channel_select ]
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[ run promise.cpp ]
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[ run promise.cpp : : : $(USE_SELECT) : promise_select ]
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;
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