Crash_Override/OVMS3-idf
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

optimization DNS get function

Browse source
This commit is contained in:
xueyunfei 2020-06-04 16:03:27 +08:00
parent c13b946773
commit 32b3c255ac
1 changed files with 11 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
components/tcp_transport/transport_tcp.c
View file

@ -34,18 +34,20 @@ typedef struct {
static int resolve_dns(const char *host, struct sockaddr_in *ip) { static int resolve_dns(const char *host, struct sockaddr_in *ip) {
struct hostent *he; const struct addrinfo hints = {
struct in_addr **addr_list; .ai_family = AF_INET,
he = gethostbyname(host); .ai_socktype = SOCK_STREAM,
if (he == NULL) { };
return ESP_FAIL; struct addrinfo *res;
}
addr_list = (struct in_addr **)he->h_addr_list; int err = getaddrinfo(host, NULL, &hints, &res);
if (addr_list[0] == NULL) { if(err != 0 || res == NULL) {
ESP_LOGE(TAG, "DNS lookup failed err=%d res=%p", err, res);
return ESP_FAIL; return ESP_FAIL;
} }
ip->sin_family = AF_INET; 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; return ESP_OK;
} }