Merge "Add support for poll()-ing nlsockets"

    return sa.nl_pid;

}

pollfd Socket::preparePoll(short events) {

    return {mFd.get(), events, 0};

}

Socket::receive_iterator::receive_iterator(Socket& socket, bool end)

    : mSocket(socket), mIsEnd(end) {

    if (!end) receive();

#include <libnl++/MessageFactory.h>

#include <linux/netlink.h>

#include <poll.h>

#include <optional>

#include <set>

     */

    std::optional<unsigned> getPid();

    /**

     * Creates a pollfd object for the socket.

     *

     * \param events Value for pollfd.events.

     * \return A populated pollfd object.

     */

    pollfd preparePoll(short events = 0);

    /**

     * Live iterator continuously receiving messages from Netlink socket.

     *