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85 lines
3.0 KiB
Groff
85 lines
3.0 KiB
Groff
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.\" $Id$
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.\"
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.\" Copyright 1998 by the Massachusetts Institute of Technology.
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.\" Copyright (C) 2008-2010 by Daniel Stenberg
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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_SERVERS 3 "5 March 2010"
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.SH NAME
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ares_set_servers \- Initialize an ares_channel name servers 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_servers(ares_channel \fIchannel\fP, struct ares_addr_node *\fIservers\fP)
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.fi
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.SH DESCRIPTION
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The \fBares_set_servers(3)\fP function initializes name servers configuration
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for the channel data identified by
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.IR channel ,
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from a
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.IR servers
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pointer to a linked list of ares_addr_node structs holding name servers
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address data.
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The name server linked list pointer argument may be the result of a previous
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call to \fBares_get_servers(3)\fP or a linked list of ares_addr_node structs
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setup by other means.
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This function replaces any potentially previously configured name servers
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with the ones given in the linked list. So, in order to configure a channel
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with more than one name server all the desired ones must be specified in a
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single list.
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\fBares_set_servers(3)\fP does not take ownership of the linked list argument.
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The caller is responsible to free the linked list when no longer needed.
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This function is capable of handling IPv4 and IPv6 name server
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addresses simultaneously, rendering \fBares_init_options(3)\fP with
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optmask \fBARES_OPT_SERVERS\fP functionally obsolete except for
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IPv4-only name server usage.
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.SH RETURN VALUES
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.B ares_set_servers(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 name servers configuration was successfuly 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_get_servers (3),
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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_servers(3) was added in c-ares 1.7.1
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.SH AUTHOR
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Implementation of this function and associated library internals are based
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on code, comments and feedback provided November and December of 2008 by
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Daniel Stenberg, Gregor Jasny, Phil Blundell and Yang Tse, December 2009
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by Cedric Bail, February 2010 by Jakub Hrozek. On March 2010 Yang Tse
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shuffled all the bits and this function popped out.
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.br
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Copyright 1998 by the Massachusetts Institute of Technology.
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Copyright (C) 2008-2010 by Daniel Stenberg
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