Hi Martin, On Thu, Aug 22, 2013 at 9:37 AM, Martin Sustrik <sustrik@xxxxxxxxxx> wrote: > I was thinking of something simpler, like: > > s = nn_socket (AF_SP, NN_SUB); > nn_connect (s, "topology://market-data"); > > The idea being that access to DNS is already configured on the box, so > there's no need to specify additional name-resolution-related properties. > The idea to get protocol from the name resolution is good. But even in this simple idea there are shortcomings. You would really write: nn_connect (s, "topology://_market-data._tcp.your.organization.com") Note by spec you specify the protocol you would like to use in the DNS request. -- Paul