Sometimes hostname resolution will fail.  Make sure that, if it does, we don't break the ioloop.
Sometimes hostname resolution will fail.  Make sure that, if it does, we don't break the ioloop.

trevorbernard/jeromq,zeromq/jeromq,trevorbernard/jeromq,zeromq/jeromq,c-rack/jeromq,fredoboulo/jeromq,fredoboulo/jeromq