1 // 2 // daytime_server.cpp 3 // ~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com) 6 // 7 // Distributed under the Boost Software License, Version 1.0. (See accompanying 8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 9 // 10 11 #include <ctime> 12 #include <iostream> 13 #include <string> 14 #include <boost/asio.hpp> 15 16 using boost::asio::ip::tcp; 17 make_daytime_string()18std::string make_daytime_string() 19 { 20 using namespace std; // For time_t, time and ctime; 21 time_t now = time(0); 22 return ctime(&now); 23 } 24 main()25int main() 26 { 27 try 28 { 29 boost::asio::io_context io_context; 30 31 tcp::endpoint endpoint(tcp::v4(), 13); 32 tcp::acceptor acceptor(io_context, endpoint); 33 34 for (;;) 35 { 36 tcp::iostream stream; 37 boost::system::error_code ec; 38 acceptor.accept(stream.socket(), ec); 39 if (!ec) 40 { 41 stream << make_daytime_string(); 42 } 43 } 44 } 45 catch (std::exception& e) 46 { 47 std::cerr << e.what() << std::endl; 48 } 49 50 return 0; 51 } 52