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.\"
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.\" Permission to use, copy, modify, and distribute this
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.\" software and its documentation for any purpose and without
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.\" fee is hereby granted, provided that the above copyright
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.\" notice appear in all copies and that both that copyright
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.\" notice and this permission notice appear in supporting
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.\" documentation, and that the name of M.I.T. not be used in
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.\" advertising or publicity pertaining to distribution of the
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.\" software without specific, written prior permission.
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.\" M.I.T. makes no representations about the suitability of
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.\" this software for any purpose. It is provided "as is"
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.\" without express or implied warranty.
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.\"
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.TH ARES_SET_SORTLIST 3 "23 November 2015"
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.SH NAME
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ares_set_sortlist \- Initialize an ares_channel sortlist configuration
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.SH SYNOPSIS
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.nf
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.B #include <ares.h>
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.PP
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.B int ares_set_sortlist(ares_channel \fIchannel\fP, const char *\fIsortstr\fP)
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.fi
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.SH DESCRIPTION
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The \fBares_set_sortlist(3)\fP function initializes an address sortlist configuration
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for the channel data identified by
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.IR channel ,
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so that addresses returned by \fBares_gethostbyname(3)\fP are sorted according to the
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sortlist. The provided
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.IR sortstr
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string that holds a space separated list of IP-address-netmask pairs. The
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netmask is optional but follows the address after a slash if present. For example,
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"130.155.160.0/255.255.240.0 130.155.0.0".
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This function replaces any potentially previously configured address sortlist
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with the ones given in the configuration string.
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.SH RETURN VALUES
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.B ares_set_sortlist(3)
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may return any of the following values:
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.TP 15
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.B ARES_SUCCESS
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The sortlist configuration was successfully initialized.
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.TP 15
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.B ARES_ENOMEM
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The process's available memory was exhausted.
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.TP 15
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.B ARES_ENODATA
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The channel data identified by
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.IR channel
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was invalid.
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.TP 15
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.B ARES_ENOTINITIALIZED
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c-ares library initialization not yet performed.
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.SH SEE ALSO
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.BR ares_init_options (3),
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.BR ares_dup(3)
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.SH AVAILABILITY
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ares_set_sortlist(3) was added in c-ares 1.11.0
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