ares_fds man page on Alpinelinux

ares_fds man page on Alpinelinux

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ARES_FDS(3)							   ARES_FDS(3)

NAME
       ares_fds - Get file descriptors to select on for name service

SYNOPSIS
       #include <ares.h>

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

DESCRIPTION
       The  ares_fds  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 returns one greater than the number of the highest socket  set
       in  either  read_fds  or write_fds.  If no queries are active, ares_fds
       will return 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)

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