static int resolve_name(struct http_client_ctx *ctx,
const char *server,
enum dns_query_type type)
{
struct waiter dns_waiter;
int ret;
dns_waiter.ctx = ctx;
k_sem_init(&dns_waiter.wait, 0, 1);
ret = dns_get_addr_info(server, type, &ctx->dns_id, dns_cb,
&dns_waiter, DNS_WAIT);
if (ret < 0) {
NET_ERR("Cannot resolve %s (%d)", server, ret);
ctx->dns_id = 0;
return ret;
}
/* Wait a little longer for the DNS to finish so that
* the DNS will timeout before the semaphore.
*/
if (k_sem_take(&dns_waiter.wait, DNS_WAIT_SEM)) {
NET_ERR("Timeout while resolving %s", server);
ctx->dns_id = 0;
return -ETIMEDOUT;
}
ctx->dns_id = 0;
if (ctx->tcp.remote.family == AF_UNSPEC) {
return -EINVAL;
}
return 0;
}
STATIC mp_obj_t mod_getaddrinfo(size_t n_args, const mp_obj_t *args) {
mp_obj_t host_in = args[0], port_in = args[1];
const char *host = mp_obj_str_get_str(host_in);
mp_int_t family = 0;
if (n_args > 2) {
family = mp_obj_get_int(args[2]);
}
getaddrinfo_state_t state;
// Just validate that it's int
(void)mp_obj_get_int(port_in);
state.port = port_in;
state.result = mp_obj_new_list(0, NULL);
k_sem_init(&state.sem, 0, UINT_MAX);
for (int i = 2; i--;) {
int type = (family != AF_INET6 ? DNS_QUERY_TYPE_A : DNS_QUERY_TYPE_AAAA);
RAISE_ERRNO(dns_get_addr_info(host, type, NULL, dns_resolve_cb, &state, 3000));
k_sem_take(&state.sem, K_FOREVER);
if (family != 0) {
break;
}
family = AF_INET6;
}
// Raise error only if there's nothing to return, otherwise
// it may be IPv4 vs IPv6 differences.
mp_int_t len = MP_OBJ_SMALL_INT_VALUE(mp_obj_len(state.result));
if (state.status != 0 && len == 0) {
mp_raise_OSError(state.status);
}
return state.result;
}
