diff options
Diffstat (limited to '3rdparty/asio/src/examples/cpp03/echo/async_udp_echo_server.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp03/echo/async_udp_echo_server.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/echo/async_udp_echo_server.cpp b/3rdparty/asio/src/examples/cpp03/echo/async_udp_echo_server.cpp new file mode 100644 index 00000000000..851c46b0803 --- /dev/null +++ b/3rdparty/asio/src/examples/cpp03/echo/async_udp_echo_server.cpp @@ -0,0 +1,92 @@ +// +// async_udp_echo_server.cpp +// ~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2016 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 <boost/bind.hpp> +#include "asio.hpp" + +using asio::ip::udp; + +class server +{ +public: + server(asio::io_context& io_context, short port) + : socket_(io_context, udp::endpoint(udp::v4(), port)) + { + socket_.async_receive_from( + asio::buffer(data_, max_length), sender_endpoint_, + boost::bind(&server::handle_receive_from, this, + asio::placeholders::error, + asio::placeholders::bytes_transferred)); + } + + void handle_receive_from(const asio::error_code& error, + size_t bytes_recvd) + { + if (!error && bytes_recvd > 0) + { + socket_.async_send_to( + asio::buffer(data_, bytes_recvd), sender_endpoint_, + boost::bind(&server::handle_send_to, this, + asio::placeholders::error, + asio::placeholders::bytes_transferred)); + } + else + { + socket_.async_receive_from( + asio::buffer(data_, max_length), sender_endpoint_, + boost::bind(&server::handle_receive_from, this, + asio::placeholders::error, + asio::placeholders::bytes_transferred)); + } + } + + void handle_send_to(const asio::error_code& /*error*/, + size_t /*bytes_sent*/) + { + socket_.async_receive_from( + asio::buffer(data_, max_length), sender_endpoint_, + boost::bind(&server::handle_receive_from, this, + asio::placeholders::error, + asio::placeholders::bytes_transferred)); + } + +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; + + using namespace std; // For atoi. + server s(io_context, atoi(argv[1])); + + io_context.run(); + } + catch (std::exception& e) + { + std::cerr << "Exception: " << e.what() << "\n"; + } + + return 0; +} |