ARES_FDS(3)            FreeBSD Library Functions Manual            ARES_FDS(3)

NAME
       ares_fds - return file descriptors to select on

SYNOPSIS
       #include <ares.h>

       int ares_fds(ares_channel channel,
                    fd_set *read_fds,
                 fd_set *write_fds)

DESCRIPTION
       The ares_fds(3) function retrieves the set of file descriptors which
       the calling application should select on for reading and writing for
       the processing of name service queries pending on the name service
       channel identified by channel.

       File descriptors will be set in the file descriptor sets pointed to by
       read_fds and write_fds as appropriate.  File descriptors already set in
       read_fds and write_fds will remain set; initialization of the file
       descriptor sets (using FD_ZERO) is the responsibility of the caller.

RETURN VALUES
       ares_fds(3) returns a value that is one greater than the number of the
       highest socket set in either read_fds or write_fds.  If no queries are
       active, ares_fds(3) returns 0.

SEE ALSO
       ares_timeout(3), ares_process(3)

AUTHOR
       Greg Hudson, MIT Information Systems
       Copyright 1998 by the Massachusetts Institute of Technology.

                                 23 July 1998                      ARES_FDS(3)