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1 | // |
2 | // sender.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 <iostream> | |
12 | #include <sstream> | |
13 | #include <string> | |
14 | #include <boost/asio.hpp> | |
15 | #include "boost/bind.hpp" | |
7c673cae FG |
16 | |
17 | const short multicast_port = 30001; | |
18 | const int max_message_count = 10; | |
19 | ||
20 | class sender | |
21 | { | |
22 | public: | |
b32b8144 | 23 | sender(boost::asio::io_context& io_context, |
7c673cae FG |
24 | const boost::asio::ip::address& multicast_address) |
25 | : endpoint_(multicast_address, multicast_port), | |
b32b8144 FG |
26 | socket_(io_context, endpoint_.protocol()), |
27 | timer_(io_context), | |
7c673cae FG |
28 | message_count_(0) |
29 | { | |
30 | std::ostringstream os; | |
31 | os << "Message " << message_count_++; | |
32 | message_ = os.str(); | |
33 | ||
34 | socket_.async_send_to( | |
35 | boost::asio::buffer(message_), endpoint_, | |
36 | boost::bind(&sender::handle_send_to, this, | |
37 | boost::asio::placeholders::error)); | |
38 | } | |
39 | ||
40 | void handle_send_to(const boost::system::error_code& error) | |
41 | { | |
42 | if (!error && message_count_ < max_message_count) | |
43 | { | |
11fdf7f2 | 44 | timer_.expires_after(boost::asio::chrono::seconds(1)); |
7c673cae FG |
45 | timer_.async_wait( |
46 | boost::bind(&sender::handle_timeout, this, | |
47 | boost::asio::placeholders::error)); | |
48 | } | |
49 | } | |
50 | ||
51 | void handle_timeout(const boost::system::error_code& error) | |
52 | { | |
53 | if (!error) | |
54 | { | |
55 | std::ostringstream os; | |
56 | os << "Message " << message_count_++; | |
57 | message_ = os.str(); | |
58 | ||
59 | socket_.async_send_to( | |
60 | boost::asio::buffer(message_), endpoint_, | |
61 | boost::bind(&sender::handle_send_to, this, | |
62 | boost::asio::placeholders::error)); | |
63 | } | |
64 | } | |
65 | ||
66 | private: | |
67 | boost::asio::ip::udp::endpoint endpoint_; | |
68 | boost::asio::ip::udp::socket socket_; | |
11fdf7f2 | 69 | boost::asio::steady_timer timer_; |
7c673cae FG |
70 | int message_count_; |
71 | std::string message_; | |
72 | }; | |
73 | ||
74 | int main(int argc, char* argv[]) | |
75 | { | |
76 | try | |
77 | { | |
78 | if (argc != 2) | |
79 | { | |
80 | std::cerr << "Usage: sender <multicast_address>\n"; | |
81 | std::cerr << " For IPv4, try:\n"; | |
82 | std::cerr << " sender 239.255.0.1\n"; | |
83 | std::cerr << " For IPv6, try:\n"; | |
84 | std::cerr << " sender ff31::8000:1234\n"; | |
85 | return 1; | |
86 | } | |
87 | ||
b32b8144 FG |
88 | boost::asio::io_context io_context; |
89 | sender s(io_context, boost::asio::ip::make_address(argv[1])); | |
90 | io_context.run(); | |
7c673cae FG |
91 | } |
92 | catch (std::exception& e) | |
93 | { | |
94 | std::cerr << "Exception: " << e.what() << "\n"; | |
95 | } | |
96 | ||
97 | return 0; | |
98 | } |