1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Source listing for Daytime.7</title> 5<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../boost_asio.html" title="Boost.Asio"> 8<link rel="up" href="../tutdaytime7.html" title="Daytime.7 - A combined TCP/UDP asynchronous server"> 9<link rel="prev" href="../tutdaytime7.html" title="Daytime.7 - A combined TCP/UDP asynchronous server"> 10<link rel="next" href="../../examples.html" title="Examples"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="../tutdaytime7.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../tutdaytime7.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../boost_asio.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="../../examples.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h4 class="title"> 27<a name="boost_asio.tutorial.tutdaytime7.src"></a><a class="link" href="src.html" title="Source listing for Daytime.7">Source listing 28 for Daytime.7</a> 29</h4></div></div></div> 30<pre class="programlisting">// 31// server.cpp 32// ~~~~~~~~~~ 33// 34// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com) 35// 36// Distributed under the Boost Software License, Version 1.0. (See accompanying 37// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 38// 39 40#include <ctime> 41#include <iostream> 42#include <string> 43#include <boost/array.hpp> 44#include <boost/bind/bind.hpp> 45#include <boost/shared_ptr.hpp> 46#include <boost/enable_shared_from_this.hpp> 47#include <boost/asio.hpp> 48 49using boost::asio::ip::tcp; 50using boost::asio::ip::udp; 51 52std::string make_daytime_string() 53{ 54 using namespace std; // For time_t, time and ctime; 55 time_t now = time(0); 56 return ctime(&now); 57} 58 59class tcp_connection 60 : public boost::enable_shared_from_this<tcp_connection> 61{ 62public: 63 typedef boost::shared_ptr<tcp_connection> pointer; 64 65 static pointer create(boost::asio::io_context& io_context) 66 { 67 return pointer(new tcp_connection(io_context)); 68 } 69 70 tcp::socket& socket() 71 { 72 return socket_; 73 } 74 75 void start() 76 { 77 message_ = make_daytime_string(); 78 79 boost::asio::async_write(socket_, boost::asio::buffer(message_), 80 boost::bind(&tcp_connection::handle_write, shared_from_this())); 81 } 82 83private: 84 tcp_connection(boost::asio::io_context& io_context) 85 : socket_(io_context) 86 { 87 } 88 89 void handle_write() 90 { 91 } 92 93 tcp::socket socket_; 94 std::string message_; 95}; 96 97class tcp_server 98{ 99public: 100 tcp_server(boost::asio::io_context& io_context) 101 : io_context_(io_context), 102 acceptor_(io_context, tcp::endpoint(tcp::v4(), 13)) 103 { 104 start_accept(); 105 } 106 107private: 108 void start_accept() 109 { 110 tcp_connection::pointer new_connection = 111 tcp_connection::create(io_context_); 112 113 acceptor_.async_accept(new_connection->socket(), 114 boost::bind(&tcp_server::handle_accept, this, new_connection, 115 boost::asio::placeholders::error)); 116 } 117 118 void handle_accept(tcp_connection::pointer new_connection, 119 const boost::system::error_code& error) 120 { 121 if (!error) 122 { 123 new_connection->start(); 124 } 125 126 start_accept(); 127 } 128 129 boost::asio::io_context& io_context_; 130 tcp::acceptor acceptor_; 131}; 132 133class udp_server 134{ 135public: 136 udp_server(boost::asio::io_context& io_context) 137 : socket_(io_context, udp::endpoint(udp::v4(), 13)) 138 { 139 start_receive(); 140 } 141 142private: 143 void start_receive() 144 { 145 socket_.async_receive_from( 146 boost::asio::buffer(recv_buffer_), remote_endpoint_, 147 boost::bind(&udp_server::handle_receive, this, 148 boost::asio::placeholders::error)); 149 } 150 151 void handle_receive(const boost::system::error_code& error) 152 { 153 if (!error) 154 { 155 boost::shared_ptr<std::string> message( 156 new std::string(make_daytime_string())); 157 158 socket_.async_send_to(boost::asio::buffer(*message), remote_endpoint_, 159 boost::bind(&udp_server::handle_send, this, message)); 160 161 start_receive(); 162 } 163 } 164 165 void handle_send(boost::shared_ptr<std::string> /*message*/) 166 { 167 } 168 169 udp::socket socket_; 170 udp::endpoint remote_endpoint_; 171 boost::array<char, 1> recv_buffer_; 172}; 173 174int main() 175{ 176 try 177 { 178 boost::asio::io_context io_context; 179 tcp_server server1(io_context); 180 udp_server server2(io_context); 181 io_context.run(); 182 } 183 catch (std::exception& e) 184 { 185 std::cerr << e.what() << std::endl; 186 } 187 188 return 0; 189} 190</pre> 191<p> 192 Return to <a class="link" href="../tutdaytime7.html" title="Daytime.7 - A combined TCP/UDP asynchronous server">Daytime.7 - A 193 combined TCP/UDP asynchronous server</a> 194 </p> 195</div> 196<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 197<td align="left"></td> 198<td align="right"><div class="copyright-footer">Copyright © 2003-2020 Christopher M. 199 Kohlhoff<p> 200 Distributed under the Boost Software License, Version 1.0. 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