ares_dup(3) [centos man page]

ARES_DUP(3)						     Library Functions Manual						       ARES_DUP(3)

NAME

       ares_dup - Duplicate a resolver channel

SYNOPSIS

       #include <ares.h>

       int ares_dup(ares_channel *dest, ares_channel source)

DESCRIPTION

       The  ares_dup(3)  function duplicates an existing communications channel for name service lookups.  If it returns successfully, ares_dup(3)
       will set the variable pointed to by dest to a handle used to identify the name service channel.	The caller should  invoke  ares_destroy(3)
       on the handle when the channel is no longer needed.

       The  ares_dup_options  function also initializes a name service channel, with additional options set exactly as the source channel has them
       configured.

SEE ALSO

       ares_destroy(3), ares_init(3), ares_library_init(3)

AVAILABILITY

       ares_dup(3) was added in c-ares 1.6.0

AUTHOR

       Daniel Stenberg

								    26 May 2009 						       ARES_DUP(3)

ARES_SET_SERVERS(3)					     Library Functions Manual					       ARES_SET_SERVERS(3)

NAME

       ares_set_servers - Initialize an ares_channel name servers configuration

SYNOPSIS

       #include <ares.h>

       int ares_set_servers(ares_channel channel, struct ares_addr_node *servers)

DESCRIPTION

       The  ares_set_servers(3) function initializes name servers configuration for the channel data identified by channel, from a servers pointer
       to a linked list of ares_addr_node structs holding name servers address data.

       The name server linked list pointer argument may be the result of a previous call to ares_get_servers(3) or a linked list of ares_addr_node
       structs setup by other means.

       This function replaces any potentially previously configured name servers with the ones given in the linked list. So, in order to configure
       a channel with more than one name server all the desired ones must be specified in a single list.

       ares_set_servers(3) does not take ownership of the linked list argument.  The caller is responsible for freeing the  linked  list  when	no
       longer needed.

       This  function  is  capable  of	handling  IPv4	and IPv6 name server addresses simultaneously, rendering ares_init_options(3) with optmask
       ARES_OPT_SERVERS functionally obsolete except for IPv4-only name server usage.

RETURN VALUES

       ares_set_servers(3) may return any of the following values:

       ARES_SUCCESS   The name servers configuration was successfuly initialized.

       ARES_ENOMEM    The process's available memory was exhausted.

       ARES_ENODATA   The channel data identified by channel was invalid.

       ARES_ENOTINITIALIZED
		      c-ares library initialization not yet performed.

SEE ALSO

       ares_set_servers_csv(3), ares_get_servers(3), ares_init_options(3), ares_dup(3)

AVAILABILITY

       ares_set_servers(3) was added in c-ares 1.7.1

AUTHOR

       Implementation of this function and associated library internals are based on code, comments and feedback provided in November and December
       of 2008 by Daniel Stenberg, Gregor Jasny, Phil Blundell and Yang Tse, December 2009 by Cedric Bail, February 2010 by Jakub Hrozek. On March
       2010 Yang Tse shuffled all the bits and this function popped out.
       Copyright 1998 by the Massachusetts Institute of Technology.
       Copyright (C) 2008-2010 by Daniel Stenberg

								   5 March 2010 					       ARES_SET_SERVERS(3)