1ARES_FDS(3)                Library Functions Manual                ARES_FDS(3)
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NAME

6       ares_fds - return file descriptors to select on
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SYNOPSIS

9       #include <ares.h>
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11       int ares_fds(ares_channel channel,
12                    fd_set *read_fds,
13                 fd_set *write_fds)
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DESCRIPTION

16       The  ares_fds(3)  function  retrieves the set of file descriptors which
17       the calling application should select on for reading  and  writing  for
18       the  processing  of  name  service  queries pending on the name service
19       channel identified by channel.
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21       File descriptors will be set in the file descriptor sets pointed to  by
22       read_fds and write_fds as appropriate.  File descriptors already set in
23       read_fds and write_fds will remain set; initialization of the file  de‐
24       scriptor sets (using FD_ZERO) is the responsibility of the caller.
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RETURN VALUES

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

32       ares_timeout(3), ares_process(3)
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AUTHOR

35       Greg Hudson, MIT Information Systems
36       Copyright 1998 by the Massachusetts Institute of Technology.
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40                                 23 July 1998                      ARES_FDS(3)