boost::asio UDP broadcasting

boost::asio UDP broadcasting

本文关键字：broadcasting UDP asio boost      更新时间：2023-10-16

我想使用boost::asio向本地网络中的所有计算机广播UDP消息。通过这些例子，我想出了

try {
    socket.open(boost::asio::ip::udp::v4());
    boost::asio::socket_base::broadcast option(true);
    socket.set_option(option);
    endpoint = boost::asio::ip::udp::endpoint(
        boost::asio::ip::address::from_string("192.168.1.255"),
        port);
}
catch(std::exception &e) {
}

并想用广播我队列中的消息

while(!queue.empty()) {
    std::string message = queue.front();
    boost::system::error_code ignored_error;
    socket.send_to(
        boost::asio::buffer(message),
        endpoint,
        0, ignored_error);
    queue.pop_front();
}

但是我的代码在第一个代码块中抛出异常CCD_ 2异常。不过，它对127.0.0.1运行良好。我做错了什么？

尝试以下代码片段发送UDP广播，利用ba::ip::address_v4::broadcast()调用获取端点：

    bs::error_code error;
    ba::ip::udp::socket socket(_impl->_ioService);
    socket.open(ba::ip::udp::v4(), error);
    if (!error)
    {
        socket.set_option(ba::ip::udp::socket::reuse_address(true));
        socket.set_option(ba::socket_base::broadcast(true));
        ba::ip::udp::endpoint senderEndpoint(ba::ip::address_v4::broadcast(), port);            
        socket.send_to(data, senderEndpoint);
        socket.close(error);
    }
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