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)