I have installed wolfSSL and wolfMQTT for the Arduino IDE. I've reworked the wolfMQTT example code for WiFi instead of Ethernet since I'm using an ESP32 dev board.
I have a cert that is already being used in a non-wolfSSL implementation and connects to a mosquitto broker. The cert is loaded into the code as:
const char* ca_cert = \
"-----BEGIN CERTIFICATE-----\n" \
--------cert code here-------------
"-----END CERTIFICATE-----\n";How would I load the cert? This is what I'm trying and it locks up:
static int mqttclient_tls_cb(MqttClient* cli)
{
int rc = WOLFSSL_FAILURE;
cli->tls.ctx = wolfSSL_CTX_new(wolfTLSv1_2_client_method());
if (cli->tls.ctx) {
wolfSSL_CTX_set_verify(cli->tls.ctx, SSL_VERIFY_NONE, mqttclient_tls_verify_cb);
/* default to success */
rc = WOLFSSL_SUCCESS;
/* Load CA certificate buffer */[b]<----************This is where it locks up!!**************[/b]
rc = wolfSSL_CTX_load_verify_buffer(cli->tls.ctx,
(const byte*)ca_cert, (long)XSTRLEN(ca_cert), WOLFSSL_FILETYPE_PEM);
}
PRINTF("MQTT TLS Setup (%d)", rc);
return rc;
}