| // |
| // client.cpp |
| // ~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2010 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 <iostream> |
| #include <boost/array.hpp> |
| #include <boost/asio.hpp> |
| |
| using boost::asio::ip::udp; |
| |
| int main(int argc, char* argv[]) |
| { |
| try |
| { |
| if (argc != 2) |
| { |
| std::cerr << "Usage: client <host>" << std::endl; |
| return 1; |
| } |
| |
| boost::asio::io_service io_service; |
| |
| udp::resolver resolver(io_service); |
| udp::resolver::query query(udp::v4(), argv[1], "daytime"); |
| udp::endpoint receiver_endpoint = *resolver.resolve(query); |
| |
| udp::socket socket(io_service); |
| socket.open(udp::v4()); |
| |
| boost::array<char, 1> send_buf = { 0 }; |
| socket.send_to(boost::asio::buffer(send_buf), receiver_endpoint); |
| |
| boost::array<char, 128> recv_buf; |
| udp::endpoint sender_endpoint; |
| size_t len = socket.receive_from( |
| boost::asio::buffer(recv_buf), sender_endpoint); |
| |
| std::cout.write(recv_buf.data(), len); |
| } |
| catch (std::exception& e) |
| { |
| std::cerr << e.what() << std::endl; |
| } |
| |
| return 0; |
| } |