dns_client_statics.h

DNS 的实现代码

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/* Provision of static storage has been moved here from dns_client_resource.c 
 * since these items are private to the DNS client. That file now only contains 
 * structure alloc and free functions, and no longer uses any static storage. 
 * This is intended to allow DNS relay to utilise the functions there without 
 * incurring a memory cost.
 */

#include <stdlib.h>
#include "dns_resolv.h"
#include "dns_client_resource.h"

extern void         init_pkt_resources(void);
extern QueryState   *dns_get_querystate(void);
extern void         free_querystate(QueryState *);
extern u_long       dns_client_query_timeout(struct timeval *,
                                             dns_client_query_callback);
extern QueryState   *search_wait_list_id(U16);
extern QueryState   *search_wait_list_reply(ATMOS_MESSAGE *);
 
extern nslook_t     *dns_hent_alloc(void);
extern void         dns_hent_free(nslook_t *);
extern void         dns_hent_msg_free(ATMOS_MESSAGE *);
extern void         dns_hent_host_free(struct dns_hostent *);
 
extern nslook_t     *dns_nslkup_alloc(void);
extern void         dns_nslkup_free(nslook_t *);
extern void         dns_nslkup_msg_free(ATMOS_MESSAGE *);
extern void         dns_nslkup_host_free(struct dns_hostent *);
extern BOOL         dns_nslkup_locate(ATMOS_MESSAGE *);