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[英]How to receive a UDP broadcast sent to 255.255.255.255 using boost asio?
[英]udp broadcast using boost::asio under windows
我在應用程序的udp廣播小節中遇到問題。 我正在Windows 10下使用Boost 1.62.0。
void test_udp_broadcast(void)
{
boost::asio::io_service io_service;
boost::asio::ip::udp::socket socket(io_service);
boost::asio::ip::udp::endpoint remote_endpoint;
socket.open(boost::asio::ip::udp::v4());
socket.set_option(boost::asio::ip::udp::socket::reuse_address(true));
socket.set_option(boost::asio::socket_base::broadcast(true));
remote_endpoint = boost::asio::ip::udp::endpoint(boost::asio::ip::address_v4::any(), 4000);
try {
socket.bind(remote_endpoint);
socket.send_to(boost::asio::buffer("abc", 3), remote_endpoint);
} catch (boost::system::system_error e) {
std::cout << e.what() << std::endl;
}
}
我收到:send_to:請求的地址在其上下文中無效。
我試圖將端點從any()更改為broadcast(),但是這只會在bind()上引發相同的錯誤。
我通常在linux下編程,並且此代碼可以在我的正常目標上運行。 所以我在這里弄錯了我的頭。 誰能給我正確的方向戳?
我相信您想使用any()將套接字綁定到本地端點(如果您希望接收廣播數據包-請參閱此問題 ),並使用broadcast()發送到遠程端點(請參閱此問題 )。
以下代碼為我編譯,不會引發任何錯誤:
void test_udp_broadcast(void)
{
boost::asio::io_service io_service;
boost::asio::ip::udp::socket socket(io_service);
boost::asio::ip::udp::endpoint local_endpoint;
boost::asio::ip::udp::endpoint remote_endpoint;
socket.open(boost::asio::ip::udp::v4());
socket.set_option(boost::asio::ip::udp::socket::reuse_address(true));
socket.set_option(boost::asio::socket_base::broadcast(true));
local_endpoint = boost::asio::ip::udp::endpoint(boost::asio::ip::address_v4::any(), 4000);
remote_endpoint = boost::asio::ip::udp::endpoint(boost::asio::ip::address_v4::broadcast(), 4000);
try {
socket.bind(local_endpoint);
socket.send_to(boost::asio::buffer("abc", 3), remote_endpoint);
} catch (boost::system::system_error e) {
std::cout << e.what() << std::endl;
}
}
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