92 lines
2.0 KiB
C++
92 lines
2.0 KiB
C++
//
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// sender.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 <iostream>
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#include <sstream>
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#include <string>
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#include <boost/asio.hpp>
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constexpr short multicast_port = 30001;
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constexpr int max_message_count = 10;
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class sender
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{
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public:
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sender(boost::asio::io_context& io_context,
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const boost::asio::ip::address& multicast_address)
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: endpoint_(multicast_address, multicast_port),
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socket_(io_context, endpoint_.protocol()),
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timer_(io_context),
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message_count_(0)
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{
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do_send();
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}
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private:
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void do_send()
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{
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std::ostringstream os;
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os << "Message " << message_count_++;
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message_ = os.str();
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socket_.async_send_to(
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boost::asio::buffer(message_), endpoint_,
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[this](boost::system::error_code ec, std::size_t /*length*/)
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{
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if (!ec && message_count_ < max_message_count)
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do_timeout();
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});
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}
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void do_timeout()
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{
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timer_.expires_after(std::chrono::seconds(1));
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timer_.async_wait(
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[this](boost::system::error_code ec)
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{
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if (!ec)
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do_send();
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});
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}
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private:
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boost::asio::ip::udp::endpoint endpoint_;
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boost::asio::ip::udp::socket socket_;
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boost::asio::steady_timer timer_;
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int message_count_;
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std::string message_;
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};
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int main(int argc, char* argv[])
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{
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try
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{
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if (argc != 2)
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{
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std::cerr << "Usage: sender <multicast_address>\n";
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std::cerr << " For IPv4, try:\n";
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std::cerr << " sender 239.255.0.1\n";
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std::cerr << " For IPv6, try:\n";
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std::cerr << " sender ff31::8000:1234\n";
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return 1;
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}
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boost::asio::io_context io_context;
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sender s(io_context, boost::asio::ip::make_address(argv[1]));
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io_context.run();
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}
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catch (std::exception& e)
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{
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std::cerr << "Exception: " << e.what() << "\n";
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}
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return 0;
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}
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