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       ares_get_servers   -   Retrieve   name   servers  from  an  initialized


       #include <ares.h>

       int ares_get_servers(ares_channel channel, struct ares_addr_node **servers)


       The ares_get_servers(3) function retrieves name  servers  configuration
       from  the  channel  data  identified  by  channel,  as a linked list of
       ares_addr_node structs storing a pointer  to  the  first  node  at  the
       address specified by servers.

       Function  caller  may traverse the returned name server linked list, or
       may use it directly  as  suitable  input  for  the  ares_set_servers(3)
       function, but shall not shrink or extend the list on its own.

       Each  node  of  the  name  server  linked  list  is  stored  in  memory
       dynamically allocated  and  managed  by  c-ares.  It  is  the  caller’s
       responsibility    to    free   the   resulting   linked   list,   using
       ares_free_data(3) , once the caller does not need it any longer.

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


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

       ARES_SUCCESS   The name servers configuration was successfuly retrieved

       ARES_ENOMEM    The memory was exhausted

       ARES_ENODATA   The channel data identified by channel was invalid.


       ares_set_servers(3), ares_init_options(3), ares_save_options(3)


       ares_get_servers(3) was added in c-ares 1.7.1


       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