diff options
Diffstat (limited to 'src/boost/libs/asio/example/cpp11/multicast/receiver.cpp')
-rw-r--r-- | src/boost/libs/asio/example/cpp11/multicast/receiver.cpp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/boost/libs/asio/example/cpp11/multicast/receiver.cpp b/src/boost/libs/asio/example/cpp11/multicast/receiver.cpp new file mode 100644 index 000000000..7148288b8 --- /dev/null +++ b/src/boost/libs/asio/example/cpp11/multicast/receiver.cpp @@ -0,0 +1,88 @@ +// +// receiver.cpp +// ~~~~~~~~~~~~ +// +// Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#include <array> +#include <iostream> +#include <string> +#include <boost/asio.hpp> + +constexpr short multicast_port = 30001; + +class receiver +{ +public: + receiver(boost::asio::io_context& io_context, + const boost::asio::ip::address& listen_address, + const boost::asio::ip::address& multicast_address) + : socket_(io_context) + { + // Create the socket so that multiple may be bound to the same address. + boost::asio::ip::udp::endpoint listen_endpoint( + listen_address, multicast_port); + socket_.open(listen_endpoint.protocol()); + socket_.set_option(boost::asio::ip::udp::socket::reuse_address(true)); + socket_.bind(listen_endpoint); + + // Join the multicast group. + socket_.set_option( + boost::asio::ip::multicast::join_group(multicast_address)); + + do_receive(); + } + +private: + void do_receive() + { + socket_.async_receive_from( + boost::asio::buffer(data_), sender_endpoint_, + [this](boost::system::error_code ec, std::size_t length) + { + if (!ec) + { + std::cout.write(data_.data(), length); + std::cout << std::endl; + + do_receive(); + } + }); + } + + boost::asio::ip::udp::socket socket_; + boost::asio::ip::udp::endpoint sender_endpoint_; + std::array<char, 1024> data_; +}; + +int main(int argc, char* argv[]) +{ + try + { + if (argc != 3) + { + std::cerr << "Usage: receiver <listen_address> <multicast_address>\n"; + std::cerr << " For IPv4, try:\n"; + std::cerr << " receiver 0.0.0.0 239.255.0.1\n"; + std::cerr << " For IPv6, try:\n"; + std::cerr << " receiver 0::0 ff31::8000:1234\n"; + return 1; + } + + boost::asio::io_context io_context; + receiver r(io_context, + boost::asio::ip::make_address(argv[1]), + boost::asio::ip::make_address(argv[2])); + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} |