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1 | // |
2 | // server.cpp | |
3 | // ~~~~~~~~~~ | |
4 | // | |
92f5a8d4 | 5 | // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
7c673cae FG |
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/array.hpp> | |
15 | #include <boost/bind.hpp> | |
16 | #include <boost/shared_ptr.hpp> | |
17 | #include <boost/enable_shared_from_this.hpp> | |
18 | #include <boost/asio.hpp> | |
19 | ||
20 | using boost::asio::ip::tcp; | |
21 | using boost::asio::ip::udp; | |
22 | ||
23 | std::string make_daytime_string() | |
24 | { | |
25 | using namespace std; // For time_t, time and ctime; | |
26 | time_t now = time(0); | |
27 | return ctime(&now); | |
28 | } | |
29 | ||
30 | class tcp_connection | |
31 | : public boost::enable_shared_from_this<tcp_connection> | |
32 | { | |
33 | public: | |
34 | typedef boost::shared_ptr<tcp_connection> pointer; | |
35 | ||
b32b8144 | 36 | static pointer create(boost::asio::io_context& io_context) |
7c673cae | 37 | { |
b32b8144 | 38 | return pointer(new tcp_connection(io_context)); |
7c673cae FG |
39 | } |
40 | ||
41 | tcp::socket& socket() | |
42 | { | |
43 | return socket_; | |
44 | } | |
45 | ||
46 | void start() | |
47 | { | |
48 | message_ = make_daytime_string(); | |
49 | ||
50 | boost::asio::async_write(socket_, boost::asio::buffer(message_), | |
51 | boost::bind(&tcp_connection::handle_write, shared_from_this())); | |
52 | } | |
53 | ||
54 | private: | |
b32b8144 FG |
55 | tcp_connection(boost::asio::io_context& io_context) |
56 | : socket_(io_context) | |
7c673cae FG |
57 | { |
58 | } | |
59 | ||
60 | void handle_write() | |
61 | { | |
62 | } | |
63 | ||
64 | tcp::socket socket_; | |
65 | std::string message_; | |
66 | }; | |
67 | ||
68 | class tcp_server | |
69 | { | |
70 | public: | |
b32b8144 | 71 | tcp_server(boost::asio::io_context& io_context) |
92f5a8d4 TL |
72 | : io_context_(io_context), |
73 | acceptor_(io_context, tcp::endpoint(tcp::v4(), 13)) | |
7c673cae FG |
74 | { |
75 | start_accept(); | |
76 | } | |
77 | ||
78 | private: | |
79 | void start_accept() | |
80 | { | |
81 | tcp_connection::pointer new_connection = | |
92f5a8d4 | 82 | tcp_connection::create(io_context_); |
7c673cae FG |
83 | |
84 | acceptor_.async_accept(new_connection->socket(), | |
85 | boost::bind(&tcp_server::handle_accept, this, new_connection, | |
86 | boost::asio::placeholders::error)); | |
87 | } | |
88 | ||
89 | void handle_accept(tcp_connection::pointer new_connection, | |
90 | const boost::system::error_code& error) | |
91 | { | |
92 | if (!error) | |
93 | { | |
94 | new_connection->start(); | |
95 | } | |
96 | ||
97 | start_accept(); | |
98 | } | |
99 | ||
92f5a8d4 | 100 | boost::asio::io_context& io_context_; |
7c673cae FG |
101 | tcp::acceptor acceptor_; |
102 | }; | |
103 | ||
104 | class udp_server | |
105 | { | |
106 | public: | |
b32b8144 FG |
107 | udp_server(boost::asio::io_context& io_context) |
108 | : socket_(io_context, udp::endpoint(udp::v4(), 13)) | |
7c673cae FG |
109 | { |
110 | start_receive(); | |
111 | } | |
112 | ||
113 | private: | |
114 | void start_receive() | |
115 | { | |
116 | socket_.async_receive_from( | |
117 | boost::asio::buffer(recv_buffer_), remote_endpoint_, | |
118 | boost::bind(&udp_server::handle_receive, this, | |
119 | boost::asio::placeholders::error)); | |
120 | } | |
121 | ||
122 | void handle_receive(const boost::system::error_code& error) | |
123 | { | |
b32b8144 | 124 | if (!error) |
7c673cae FG |
125 | { |
126 | boost::shared_ptr<std::string> message( | |
127 | new std::string(make_daytime_string())); | |
128 | ||
129 | socket_.async_send_to(boost::asio::buffer(*message), remote_endpoint_, | |
130 | boost::bind(&udp_server::handle_send, this, message)); | |
131 | ||
132 | start_receive(); | |
133 | } | |
134 | } | |
135 | ||
136 | void handle_send(boost::shared_ptr<std::string> /*message*/) | |
137 | { | |
138 | } | |
139 | ||
140 | udp::socket socket_; | |
141 | udp::endpoint remote_endpoint_; | |
142 | boost::array<char, 1> recv_buffer_; | |
143 | }; | |
144 | ||
145 | int main() | |
146 | { | |
147 | try | |
148 | { | |
b32b8144 FG |
149 | boost::asio::io_context io_context; |
150 | tcp_server server1(io_context); | |
151 | udp_server server2(io_context); | |
152 | io_context.run(); | |
7c673cae FG |
153 | } |
154 | catch (std::exception& e) | |
155 | { | |
156 | std::cerr << e.what() << std::endl; | |
157 | } | |
158 | ||
159 | return 0; | |
160 | } |