Read a result for the query associated with the |fd| descriptor. Closes |fd| before returning.
< 0: negative POSIX error code (see errno.h for possible values). |rcode| is not set. >= 0: length of |answer|. |rcode| is the resolver return code (e.g., ns_r_nxdomain)
See Implementation
Read a result for the query associated with the |fd| descriptor. Closes |fd| before returning.