137 lines
4.2 KiB
C
137 lines
4.2 KiB
C
|
/**
|
|||
|
|
* @file cm_async_dns.h
|
|||
|
|
* @brief 异步DNS解析接口
|
|||
|
|
* @copyright Copyright © 2021 China Mobile IOT. All rights reserved.
|
|||
|
|
* @author By wangk
|
|||
|
|
* @date 2021/08/16
|
|||
|
|
*
|
|||
|
|
* @defgroup async_dns async_dns
|
|||
|
|
* @ingroup NET
|
|||
|
|
* @{
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
#ifndef __CM_ASYNC_DNS_H__
|
|||
|
|
#define __CM_ASYNC_DNS_H__
|
|||
|
|
|
|||
|
|
/****************************************************************************
|
|||
|
|
* Included Files
|
|||
|
|
****************************************************************************/
|
|||
|
|
|
|||
|
|
#include <stdint.h>
|
|||
|
|
// 包含平台特定的socket头文件
|
|||
|
|
#include "lwip/sockets.h" // lwip socket
|
|||
|
|
#include "cm_eloop.h"
|
|||
|
|
|
|||
|
|
/****************************************************************************
|
|||
|
|
* Pre-processor Definitions
|
|||
|
|
****************************************************************************/
|
|||
|
|
|
|||
|
|
/****************************************************************************
|
|||
|
|
* Public Types
|
|||
|
|
****************************************************************************/
|
|||
|
|
|
|||
|
|
/** DNS resolve types */
|
|||
|
|
typedef enum
|
|||
|
|
{
|
|||
|
|
CM_ASYNC_DNS_ADDRTYPE_IPV4 = 0, /**< resolve IPv4 address */
|
|||
|
|
CM_ASYNC_DNS_ADDRTYPE_IPV6, /**< resolve IPv6 address */
|
|||
|
|
CM_ASYNC_DNS_ADDRTYPE_IPV4_IPV6, /**< try to resolve IPv4 first, try IPv6 if IPv4 fails only */
|
|||
|
|
CM_ASYNC_DNS_ADDRTYPE_IPV6_IPV4, /**< try to resolve IPv6 first, try IPv4 if IPv6 fails only */
|
|||
|
|
} cm_async_dns_addrtype_e;
|
|||
|
|
|
|||
|
|
/** 异步DNS解析事件类型 */
|
|||
|
|
typedef enum
|
|||
|
|
{
|
|||
|
|
CM_ASYNC_DNS_EV_NONE = 0,
|
|||
|
|
// responses
|
|||
|
|
CM_ASYNC_DNS_RESOLVE_OK, /**< 域名解析成功 */
|
|||
|
|
CM_ASYNC_DNS_RESOLVE_FAIL, /**< 域名解析失败 */
|
|||
|
|
} cm_async_dns_event_e;
|
|||
|
|
|
|||
|
|
/** IP地址(异步DNS解析结果)类型 */
|
|||
|
|
typedef struct cm_async_dns_ip_addr
|
|||
|
|
{
|
|||
|
|
cm_async_dns_addrtype_e type; /**< 地址类型(IPv4或IPv6) */
|
|||
|
|
union {
|
|||
|
|
struct in_addr sin_addr; /**< IPv4 address */
|
|||
|
|
struct in6_addr sin6_addr; /**< IPv6 address */
|
|||
|
|
} u_addr;
|
|||
|
|
} cm_async_dns_ip_addr_t;
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
异步DNS解析事件回调函数类型
|
|||
|
|
@param req_id [in] 请求ID
|
|||
|
|
@param event [in] 事件类型
|
|||
|
|
@param cb_param [in] 用户参数(创建socket时指定)
|
|||
|
|
@param host_name [in] 域名
|
|||
|
|
@param ip_addr [in] IP地址(DNS解析结果)
|
|||
|
|
*/
|
|||
|
|
typedef void (*cm_async_dns_event_cb)(int req_id, cm_async_dns_event_e event, void *cb_param,
|
|||
|
|
const char *host_name, const cm_async_dns_ip_addr_t *ip_addr);
|
|||
|
|
|
|||
|
|
/****************************************************************************
|
|||
|
|
* Public Data
|
|||
|
|
****************************************************************************/
|
|||
|
|
|
|||
|
|
/****************************************************************************
|
|||
|
|
* Public Function Prototypes
|
|||
|
|
****************************************************************************/
|
|||
|
|
|
|||
|
|
#ifdef __cplusplus
|
|||
|
|
#define EXTERN extern "C"
|
|||
|
|
extern "C" {
|
|||
|
|
#else
|
|||
|
|
#define EXTERN extern
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @brief 获取异步dns模块运行的Event Loop
|
|||
|
|
*
|
|||
|
|
* @return
|
|||
|
|
* 本模块运行的Event Loop
|
|||
|
|
*
|
|||
|
|
* @details 获取本模块运行的Event Loop(初始化传入或者系统默认Event Loop)
|
|||
|
|
*/
|
|||
|
|
cm_eloop_handle_t cm_async_dns_eloop(void);
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @brief 设置DNS解析全局优先级
|
|||
|
|
*
|
|||
|
|
* @param [in] priority DNS解析优先级，0：v4优先，1：v6优先，默认v6优先
|
|||
|
|
*
|
|||
|
|
* @return
|
|||
|
|
* = 0 - 成功 \n
|
|||
|
|
* < 0 - 失败
|
|||
|
|
*
|
|||
|
|
* @details 开机默认v6优先，若使用业务(MQTT/HTTP/NTP)时单独配置了通道优先级，则全局优先级对该业务通道将不生效
|
|||
|
|
*/
|
|||
|
|
int32_t cm_async_dns_set_priority(uint8_t priority);
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* @brief 请求执行异步DNS解析
|
|||
|
|
*
|
|||
|
|
* @param [in] host_name 域名
|
|||
|
|
* @param [in] addr_type 地址类型(IPV4或IPV6)
|
|||
|
|
* @param [out] ip_addr IP地址(DNS解析结果)
|
|||
|
|
* @param [in] event_cb 异步事件回调函数
|
|||
|
|
* @param [in] cb_param 用户参数(将作为参数传入event_cb)
|
|||
|
|
*
|
|||
|
|
* @return
|
|||
|
|
* > 0 - DNS请求成功,返回异步DNS请求ID(等待回调函数传回执行结果) \n
|
|||
|
|
* = 0 - DNS请求已完成(result输出解析结果) \n
|
|||
|
|
* = -1 - 请求失败
|
|||
|
|
*
|
|||
|
|
* @details 请求执行异步DNS解析
|
|||
|
|
*/
|
|||
|
|
int cm_async_dns_request(const char *host_name, cm_async_dns_addrtype_e addr_type,
|
|||
|
|
cm_async_dns_ip_addr_t *ip_addr, cm_async_dns_event_cb event_cb, void *cb_param);
|
|||
|
|
|
|||
|
|
#undef EXTERN
|
|||
|
|
#ifdef __cplusplus
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#endif /* __CM_ASYNC_DNS_H__ */
|
|||
|
|
|
|||
|
|
/** @}*/
|