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-rw-r--r--3rdparty/asio/src/examples/cpp11/multicast/receiver.cpp88
1 files changed, 88 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/multicast/receiver.cpp b/3rdparty/asio/src/examples/cpp11/multicast/receiver.cpp
new file mode 100644
index 00000000000..9cb032c4148
--- /dev/null
+++ b/3rdparty/asio/src/examples/cpp11/multicast/receiver.cpp
@@ -0,0 +1,88 @@
+//
+// receiver.cpp
+// ~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 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 "asio.hpp"
+
+constexpr short multicast_port = 30001;
+
+class receiver
+{
+public:
+ receiver(asio::io_context& io_context,
+ const asio::ip::address& listen_address,
+ const asio::ip::address& multicast_address)
+ : socket_(io_context)
+ {
+ // Create the socket so that multiple may be bound to the same address.
+ asio::ip::udp::endpoint listen_endpoint(
+ listen_address, multicast_port);
+ socket_.open(listen_endpoint.protocol());
+ socket_.set_option(asio::ip::udp::socket::reuse_address(true));
+ socket_.bind(listen_endpoint);
+
+ // Join the multicast group.
+ socket_.set_option(
+ asio::ip::multicast::join_group(multicast_address));
+
+ do_receive();
+ }
+
+private:
+ void do_receive()
+ {
+ socket_.async_receive_from(
+ asio::buffer(data_), sender_endpoint_,
+ [this](std::error_code ec, std::size_t length)
+ {
+ if (!ec)
+ {
+ std::cout.write(data_.data(), length);
+ std::cout << std::endl;
+
+ do_receive();
+ }
+ });
+ }
+
+ asio::ip::udp::socket socket_;
+ 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;
+ }
+
+ asio::io_context io_context;
+ receiver r(io_context,
+ asio::ip::make_address(argv[1]),
+ asio::ip::make_address(argv[2]));
+ io_context.run();
+ }
+ catch (std::exception& e)
+ {
+ std::cerr << "Exception: " << e.what() << "\n";
+ }
+
+ return 0;
+}