That netdb.h I linked to does have getaddrinfo and its changelog mentions it being added two years ago, but http://cygwin.com/cygwin-api/std-notimpl.html includes getaddrinfo in the not implemented list.
That netdb.h I linked to does have getaddrinfo and its changelog mentions it being added two years ago, but http:// cygwin. com/cygwin- api/std- notimpl. html includes getaddrinfo in the not implemented list.