diff options
Diffstat (limited to '3rdparty/asio/src/examples/cpp11/tutorial/daytime6/server.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp11/tutorial/daytime6/server.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/tutorial/daytime6/server.cpp b/3rdparty/asio/src/examples/cpp11/tutorial/daytime6/server.cpp new file mode 100644 index 00000000000..42c80795a9e --- /dev/null +++ b/3rdparty/asio/src/examples/cpp11/tutorial/daytime6/server.cpp @@ -0,0 +1,89 @@ +// +// 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 <array> +#include <ctime> +#include <functional> +#include <iostream> +#include <memory> +#include <string> +#include <asio.hpp> + +using asio::ip::udp; + +std::string make_daytime_string() +{ + using namespace std; // For time_t, time and ctime; + time_t now = time(0); + return ctime(&now); +} + +class udp_server +{ +public: + udp_server(asio::io_context& io_context) + : socket_(io_context, udp::endpoint(udp::v4(), 13)) + { + start_receive(); + } + +private: + void start_receive() + { + socket_.async_receive_from( + asio::buffer(recv_buffer_), remote_endpoint_, + std::bind(&udp_server::handle_receive, this, + asio::placeholders::error, + asio::placeholders::bytes_transferred)); + } + + void handle_receive(const std::error_code& error, + std::size_t /*bytes_transferred*/) + { + if (!error) + { + std::shared_ptr<std::string> message( + new std::string(make_daytime_string())); + + socket_.async_send_to(asio::buffer(*message), remote_endpoint_, + std::bind(&udp_server::handle_send, this, message, + asio::placeholders::error, + asio::placeholders::bytes_transferred)); + + start_receive(); + } + } + + void handle_send(std::shared_ptr<std::string> /*message*/, + const std::error_code& /*error*/, + std::size_t /*bytes_transferred*/) + { + } + + udp::socket socket_; + udp::endpoint remote_endpoint_; + std::array<char, 1> recv_buffer_; +}; + +int main() +{ + try + { + asio::io_context io_context; + udp_server server(io_context); + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << e.what() << std::endl; + } + + return 0; +} |