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-rw-r--r--3rdparty/asio/src/examples/cpp14/echo/async_udp_echo_server.cpp83
1 files changed, 83 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp14/echo/async_udp_echo_server.cpp b/3rdparty/asio/src/examples/cpp14/echo/async_udp_echo_server.cpp
new file mode 100644
index 00000000000..ea9a1da88a0
--- /dev/null
+++ b/3rdparty/asio/src/examples/cpp14/echo/async_udp_echo_server.cpp
@@ -0,0 +1,83 @@
+//
+// async_udp_echo_server.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 <cstdlib>
+#include <iostream>
+#include <asio/ts/buffer.hpp>
+#include <asio/ts/internet.hpp>
+
+using asio::ip::udp;
+
+class server
+{
+public:
+ server(asio::io_context& io_context, short port)
+ : socket_(io_context, udp::endpoint(udp::v4(), port))
+ {
+ do_receive();
+ }
+
+ void do_receive()
+ {
+ socket_.async_receive_from(
+ asio::buffer(data_, max_length), sender_endpoint_,
+ [this](std::error_code ec, std::size_t bytes_recvd)
+ {
+ if (!ec && bytes_recvd > 0)
+ {
+ do_send(bytes_recvd);
+ }
+ else
+ {
+ do_receive();
+ }
+ });
+ }
+
+ void do_send(std::size_t length)
+ {
+ socket_.async_send_to(
+ asio::buffer(data_, length), sender_endpoint_,
+ [this](std::error_code /*ec*/, std::size_t /*bytes_sent*/)
+ {
+ do_receive();
+ });
+ }
+
+private:
+ udp::socket socket_;
+ udp::endpoint sender_endpoint_;
+ enum { max_length = 1024 };
+ char data_[max_length];
+};
+
+int main(int argc, char* argv[])
+{
+ try
+ {
+ if (argc != 2)
+ {
+ std::cerr << "Usage: async_udp_echo_server <port>\n";
+ return 1;
+ }
+
+ asio::io_context io_context;
+
+ server s(io_context, std::atoi(argv[1]));
+
+ io_context.run();
+ }
+ catch (std::exception& e)
+ {
+ std::cerr << "Exception: " << e.what() << "\n";
+ }
+
+ return 0;
+}