55 lines
1.2 KiB
C++
55 lines
1.2 KiB
C++
//
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// server.cpp
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// ~~~~~~~~~~
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//
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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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#include <ctime>
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#include <iostream>
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#include <string>
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#include <boost/array.hpp>
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#include <boost/asio.hpp>
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using boost::asio::ip::udp;
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std::string make_daytime_string()
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{
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using namespace std; // For time_t, time and ctime;
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time_t now = time(0);
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return ctime(&now);
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}
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int main()
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{
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try
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{
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boost::asio::io_context io_context;
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udp::socket socket(io_context, udp::endpoint(udp::v4(), 13));
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for (;;)
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{
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boost::array<char, 1> recv_buf;
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udp::endpoint remote_endpoint;
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boost::system::error_code error;
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socket.receive_from(boost::asio::buffer(recv_buf), remote_endpoint);
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std::string message = make_daytime_string();
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boost::system::error_code ignored_error;
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socket.send_to(boost::asio::buffer(message),
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remote_endpoint, 0, ignored_error);
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}
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}
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catch (std::exception& e)
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{
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std::cerr << e.what() << std::endl;
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}
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return 0;
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}
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