optimization DNS get function
@@ -32,20 +32,22 @@ typedef struct {
int sock;
} transport_tcp_t;
-static int resolve_dns(const char *host, struct sockaddr_in *ip) {
-
- struct hostent *he;
- struct in_addr **addr_list;
- he = gethostbyname(host);
- if (he == NULL) {
- return ESP_FAIL;
- }
- addr_list = (struct in_addr **)he->h_addr_list;
- if (addr_list[0] == NULL) {
+static int resolve_dns(const char *host, struct sockaddr_in *ip)
+{
+ const struct addrinfo hints = {
+ .ai_family = AF_INET,
+ .ai_socktype = SOCK_STREAM,
+ };
+ struct addrinfo *res;
+
+ int err = getaddrinfo(host, NULL, &hints, &res);
+ if(err != 0 || res == NULL) {
+ ESP_LOGE(TAG, "DNS lookup failed err=%d res=%p", err, res);
return ESP_FAIL;
}
ip->sin_family = AF_INET;
- memcpy(&ip->sin_addr, addr_list[0], sizeof(ip->sin_addr));
+ memcpy(&ip->sin_addr, &((struct sockaddr_in *)(res->ai_addr))->sin_addr, sizeof(ip->sin_addr));
+ freeaddrinfo(res);
return ESP_OK;
}
