diff options
Diffstat (limited to '3rdparty/asio/src/examples/cpp11/spawn/echo_server.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp11/spawn/echo_server.cpp | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/spawn/echo_server.cpp b/3rdparty/asio/src/examples/cpp11/spawn/echo_server.cpp new file mode 100644 index 00000000000..ae949d60bef --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/spawn/echo_server.cpp @@ -0,0 +1,117 @@ +// +// echo_server.cpp +// ~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2024 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) +// + +#include <asio/detached.hpp> +#include <asio/io_context.hpp> +#include <asio/ip/tcp.hpp> +#include <asio/spawn.hpp> +#include <asio/steady_timer.hpp> +#include <asio/write.hpp> +#include <iostream> +#include <memory> + +using asio::ip::tcp; + +class session : public std::enable_shared_from_this<session> +{ +public: + explicit session(asio::io_context& io_context, tcp::socket socket) + : socket_(std::move(socket)), + timer_(io_context), + strand_(io_context.get_executor()) + { + } + + void go() + { + auto self(shared_from_this()); + asio::spawn(strand_, + [this, self](asio::yield_context yield) + { + try + { + char data[128]; + for (;;) + { + timer_.expires_after(std::chrono::seconds(10)); + std::size_t n = socket_.async_read_some(asio::buffer(data), yield); + asio::async_write(socket_, asio::buffer(data, n), yield); + } + } + catch (std::exception& e) + { + socket_.close(); + timer_.cancel(); + } + }, asio::detached); + + asio::spawn(strand_, + [this, self](asio::yield_context yield) + { + while (socket_.is_open()) + { + std::error_code ignored_ec; + timer_.async_wait(yield[ignored_ec]); + if (timer_.expiry() <= asio::steady_timer::clock_type::now()) + socket_.close(); + } + }, asio::detached); + } + +private: + tcp::socket socket_; + asio::steady_timer timer_; + asio::strand<asio::io_context::executor_type> strand_; +}; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 2) + { + std::cerr << "Usage: echo_server <port>\n"; + return 1; + } + + asio::io_context io_context; + + asio::spawn(io_context, + [&](asio::yield_context yield) + { + tcp::acceptor acceptor(io_context, + tcp::endpoint(tcp::v4(), std::atoi(argv[1]))); + + for (;;) + { + std::error_code ec; + tcp::socket socket(io_context); + acceptor.async_accept(socket, yield[ec]); + if (!ec) + { + std::make_shared<session>(io_context, std::move(socket))->go(); + } + } + }, + [](std::exception_ptr e) + { + if (e) + std::rethrow_exception(e); + }); + + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} |