On Aug 10, 2013, at 5:51 AM, Bjorn Reese <breese@mail1.stofanet.dk>

wrote:

Boost.Asio uses native_handle_type, which is a wrapper class for the
underlying socket type. In the case of Windows this is SOCKET. However,
you probably need to go via a intermediary variable:

boost::asio::windows::stream_handle::native_handle_type handle(zfd);
boost::asio::windows::stream_handle io(ios, handle);

Disclaimer: I have not compiled it. You may need to include something
from detail to make it work, or it may not work at all ;-)

zmq::context_t zenv(1);

zmq::socket_t zocket(zenv, ZMQ_PUSH);

SOCKET zfd;

std::size_t zfd_size = sizeof(zfd);

zocket.getsockopt(ZMQ_FD, &zfd, &zfd_size);

boost::asio::windows::stream_handle::native_handle_type

zfd_native(&zfd);

boost::asio::io_service ios;

boost::asio::windows::stream_handle io(ios, zfd_native);

I have no idea, yet, if that is a good thing or not ;-)