ares_free_data(3) [debian man page]
ARES_FREE_DATA(3) Library Functions Manual ARES_FREE_DATA(3) NAME
ares_free_data - Free data allocated by several c-ares functions SYNOPSIS
#include <ares.h> void ares_free_data(void *dataptr) cc file.c -lcares DESCRIPTION
The ares_free_data(3) function frees one or more data structures allocated and returned by several c-ares functions. Specifically the data returned by the following list of functions must be deallocated using this function. ares_get_servers(3) When used to free the data returned by ares_get_servers(3) this will free the whole linked list of ares_addr_node structures returned by ares_get_servers(3). ares_parse_srv_reply(3) When used to free the data returned by ares_parse_srv_reply(3) this will free the whole linked list of ares_srv_reply structures returned by ares_parse_srv_reply(3), along with any additional storage associated with those structures. ares_parse_mx_reply(3) When used to free the data returned by ares_parse_mx_reply(3) this will free the whole linked list of ares_mx_reply structures returned by ares_parse_mx_reply(3), along with any additional storage associated with those structures. ares_parse_txt_reply(3) When used to free the data returned by ares_parse_txt_reply(3) this will free the whole linked list of ares_txt_reply structures returned by ares_parse_txt_reply(3), along with any additional storage associated with those structures. ares_parse_soa_reply(3) When used to free the data returned by ares_parse_soa_reply(3) this will free the ares_soa_reply structure, along with any additional storage associated with those structure. RETURN VALUE
The ares_free_data() function does not return a value. AVAILABILITY
This function was first introduced in c-ares version 1.7.0. SEE ALSO
ares_get_servers(3), ares_parse_srv_reply(3), ares_parse_mx_reply(3), ares_parse_txt_reply(3), ares_parse_soa_reply(3) AUTHOR
Yang Tse Copyright 1998 by the Massachusetts Institute of Technology. Copyright (C) 2004-2010 by Daniel Stenberg. 5 March 2010 ARES_FREE_DATA(3)
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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)