Esp 8266使用関数espconn_gethostbyname()解析に失敗した問題

ip_addr_t *esp_server_ip;
LOCAL void ICACHE_FLASH_ATTR
user_esp_platform_dns_found(const char *name, ip_addr_t *ipaddr, void *arg)
{
struct espconn *pespconn = (struct espconn *)arg;
if (ipaddr != NULL)
os_printf(user_esp_platform_dns_found %d.%d.%d.%d/n,
*((uint8 *)&ipaddr->addr), *((uint8 *)&ipaddr->addr + 1),
*((uint8 *)&ipaddr->addr + 2), *((uint8 *)&ipaddr->addr + 3));
}
void dns_test(void) {
espconn_gethostbyname(pespconn,“iot.espressif.cn”, esp_server_ip,
user_esp_platform_dns_found);
}

  DSN                ，           。

 
  
  
   
ip_addr_t *esp_server_ip;
  
   
espconn_gethostbyname(pespconn,“iot.espressif.cn”, esp_server_ip,
user_esp_platform_dns_found);
  
  
 
   
 
  
             ：
  
   
  
   
ip_addr_t esp_server_ip;
  
   
espconn_gethostbyname(pespconn,“iot.espressif.cn”, &esp_server_ip,
user_esp_platform_dns_found);