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Heap optimization (#471)

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* Remove duplicated include

* Clear certificates just after handshake

It can save up to 7k of heap
This commit is contained in:
copercini 2017-06-29 04:30:59 -03:00 committed by Me No Dev
parent 87093368d9
commit cfde557916
1 changed files with 12 additions and 13 deletions
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25
libraries/WiFiClientSecure/src/ssl_client.cpp
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@ -8,7 +8,6 @@
#include "Arduino.h" #include "Arduino.h"
#include <esp32-hal-log.h> #include <esp32-hal-log.h>
#include <lwip/sockets.h>
#include <lwip/err.h> #include <lwip/err.h>
#include <lwip/sockets.h> #include <lwip/sockets.h>
#include <lwip/sys.h> #include <lwip/sys.h>
@ -181,6 +180,18 @@ int start_ssl_client(sslclient_context *ssl_client, uint32_t ipAddress, uint32_t
} else { } else {
log_i("Certificate verified."); log_i("Certificate verified.");
} }
if (rootCABuff != NULL) {
mbedtls_x509_crt_free(&ssl_client->ca_cert);
}
if (cli_cert != NULL) {
mbedtls_x509_crt_free(&ssl_client->client_cert);
}
if (cli_key != NULL) {
mbedtls_pk_free(&ssl_client->client_key);
}
log_i("Free heap after TLS %u", xPortGetFreeHeapSize()); log_i("Free heap after TLS %u", xPortGetFreeHeapSize());
@ -201,18 +212,6 @@ void stop_ssl_socket(sslclient_context *ssl_client, const char *rootCABuff, cons
mbedtls_ssl_config_free(&ssl_client->ssl_conf); mbedtls_ssl_config_free(&ssl_client->ssl_conf);
mbedtls_ctr_drbg_free(&ssl_client->drbg_ctx); mbedtls_ctr_drbg_free(&ssl_client->drbg_ctx);
mbedtls_entropy_free(&ssl_client->entropy_ctx); mbedtls_entropy_free(&ssl_client->entropy_ctx);
if (rootCABuff != NULL) {
mbedtls_x509_crt_free(&ssl_client->ca_cert);
}
if (cli_cert != NULL) {
mbedtls_x509_crt_free(&ssl_client->client_cert);
}
if (cli_key != NULL) {
mbedtls_pk_free(&ssl_client->client_key);
}
} }