mirror of
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118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
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/*
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/~` _ _ _|_. _ _ |_ | _
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\_,(_)| | | || ||_|(_||_)|(/_
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https://github.com/Naios/continuable
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v3.0.0
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Copyright(c) 2015 - 2019 Denis Blank <denis.blank at outlook dot com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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**/
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#include <array>
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#include <chrono>
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#include <iostream>
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#include <string>
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#include <system_error>
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#if defined(CONTINUABLE_HAS_EXCEPTIONS)
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#include <exception>
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#endif
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#include <asio.hpp>
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#include <continuable/continuable.hpp>
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using namespace std::chrono_literals;
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inline auto error_code_remapper() {
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return [](auto&& promise, asio::error_code e, auto&&... args) {
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if (e) {
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#if defined(CONTINUABLE_HAS_EXCEPTIONS)
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promise.set_exception(std::make_exception_ptr(e));
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#else
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promise.set_exception(cti::exception_t(e.value(), e.category()));
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#endif
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} else {
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promise.set_value(std::forward<decltype(args)>(args)...);
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}
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};
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}
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struct functional_io_service {
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asio::io_context service_;
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asio::ip::udp::resolver resolver_;
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functional_io_service() : resolver_(service_) {
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}
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auto trough_post() noexcept {
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return [&](auto&& work) mutable {
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asio::post(service_, std::forward<decltype(work)>(work));
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};
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}
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auto wait_async(std::chrono::milliseconds /*time*/) {
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return cti::make_continuable<void>([](auto&& promise) {
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// ...
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promise.set_value();
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});
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}
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auto async_resolve(std::string host, std::string service) {
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return cti::promisify<asio::ip::udp::resolver::iterator>::with(
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error_code_remapper(),
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[&](auto&&... args) {
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resolver_.async_resolve(std::forward<decltype(args)>(args)...);
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},
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std::move(host), std::move(service));
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}
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void run() {
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service_.run();
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}
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};
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int main(int, char**) {
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using asio::ip::udp;
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functional_io_service service;
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service.async_resolve("127.0.0.1", "daytime")
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.then(
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[](udp::resolver::iterator iterator) {
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// ...
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return *iterator;
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},
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service.trough_post())
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.then([](udp::endpoint /*endpoint*/) {
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// auto socket = std::make_shared<udp::socket>(service);
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// socket->async_send_to()
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})
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.fail([](cti::exception_t /*error*/) {
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// ...
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});
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service.run();
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return 0;
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}
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