Tutorial |
#include <iostream> #include <boost/array.hpp> #include <asio.hpp> using asio::ip::udp; int main(int argc, char* argv[]) { try { if (argc != 2) { std::cerr << "Usage: client <host>" << std::endl; return 1; } 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(asio::buffer(send_buf), receiver_endpoint); boost::array<char, 128> recv_buf; udp::endpoint sender_endpoint; size_t len = socket.receive_from( 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; }