Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+}