Description
Hardware:
Board: ESP32 Dev Module
Core Installation version: 1.0.3
IDE name: Platform.io
Flash Frequency: 80Mhz
PSRAM enabled: no
Upload Speed: 115200
Computer OS: Windows 10
Description:
WiFiClientSecure does not free memory after a failed connection.
Update: In the ssl_client.cpp, in start_ssl_client function.
if (rootCABuff != NULL) {
log_v("Loading CA cert");
mbedtls_x509_crt_init(&ssl_client->ca_cert);
mbedtls_ssl_conf_authmode(&ssl_client->ssl_conf, MBEDTLS_SSL_VERIFY_REQUIRED);
ret = mbedtls_x509_crt_parse(&ssl_client->ca_cert, (const unsigned char *)rootCABuff, strlen(rootCABuff) + 1);
mbedtls_ssl_conf_ca_chain(&ssl_client->ssl_conf, &ssl_client->ca_cert, NULL);
//mbedtls_ssl_conf_verify(&ssl_client->ssl_ctx, my_verify, NULL );
if (ret < 0) {
return handle_error(ret);
}
}
You can see that after mbedtls_x509_crt_init(&ssl_client->ca_cert);,
if (ret < 0) has no mbedtls_x509_crt_free(&ssl_client->ca_cert); to free memory.
So the free memory in RAM decreasing continuously.
The same thing (I guess) may occur with the
ret = mbedtls_x509_crt_parse(&ssl_client->client_cert, (const unsigned char *)cli_cert, strlen(cli_cert) + 1);
if (ret < 0) {
return handle_error(ret);
}
and the
ret = mbedtls_pk_parse_key(&ssl_client->client_key, (const unsigned char *)cli_key, strlen(cli_key) + 1, NULL, 0);
if (ret != 0) {
return handle_error(ret);
}
So please update the code. My project is stuck here. I need your help.
Thank you so much.
Sketch:
void loop() {
// put your main code here, to run repeatedly:
Serial.println(esp_get_free_heap_size());
WiFiClientSecure client;
client.setCACert(test_root_ca);
client.setCertificate(client_crt);
client.setPrivateKey(client_key);
Serial.println(client.connect("test.mosquitto.org", 8884, 500));
client.stop();
}
Serial Monitor:
WiFi connected.
IP address:
192.168.1.37
213744
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