fixes #576 recv returned due to timeout returns ETIMEDOUT, not EAGAIN
fixes #576 recv returned due to timeout returns ETIMEDOUT, not EAGAIN

imp/nanomsg,snikulov/nanomsg,imp/nanomsg,reqshark/nanomsg,thisco-de/nanomsg,reqshark/nanomsg,featherweight/ftw-kernel-nanomsg,reqshark/nanomsg,snikulov/nanomsg,thisco-de/nanomsg,featherweight/ftw-kernel-nanomsg,imp/nanomsg