53 lines
1.2 KiB
C++
53 lines
1.2 KiB
C++
//
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// client.cpp
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// ~~~~~~~~~~
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//
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// Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <iostream>
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#include <boost/array.hpp>
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#include <boost/asio.hpp>
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using boost::asio::ip::udp;
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int main(int argc, char* argv[])
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{
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try
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{
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if (argc != 2)
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{
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std::cerr << "Usage: client <host>" << std::endl;
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return 1;
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}
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boost::asio::io_context io_context;
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udp::resolver resolver(io_context);
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udp::endpoint receiver_endpoint =
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*resolver.resolve(udp::v4(), argv[1], "daytime").begin();
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udp::socket socket(io_context);
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socket.open(udp::v4());
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boost::array<char, 1> send_buf = {{ 0 }};
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socket.send_to(boost::asio::buffer(send_buf), receiver_endpoint);
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boost::array<char, 128> recv_buf;
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udp::endpoint sender_endpoint;
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size_t len = socket.receive_from(
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boost::asio::buffer(recv_buf), sender_endpoint);
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std::cout.write(recv_buf.data(), len);
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}
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catch (std::exception& e)
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{
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std::cerr << e.what() << std::endl;
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}
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return 0;
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}
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