Merge branch 'feature/add_kconfig_for_http_ota_buff_size' into 'master'

feat(http): Add Kconfig for user to configure HTTP buffer and ota buffer size

See merge request sdk/ESP8266_RTOS_SDK!1055

components/esp_http_client/Kconfig

@@ -7,4 +7,12 @@ config ESP_HTTP_CLIENT_ENABLE_HTTPS
     help
         This option will enable https protocol by linking mbedtls library and initializing SSL transport
 
+config HTTP_BUF_SIZE
+    int "Default HTTP Buffer Size (both send and receive)"
+    default 512
+    range 512 1460
+    help
+        Set HTTP Buffer Size. The larger buffer size will make send and receive more size packet once. 
+
+
 endmenu

components/esp_http_client/include/esp_http_client.h

@@ -24,7 +24,7 @@
 extern "C" {
 #endif
 
-#define DEFAULT_HTTP_BUF_SIZE (512)
+#define DEFAULT_HTTP_BUF_SIZE    CONFIG_HTTP_BUF_SIZE
 
 typedef struct esp_http_client *esp_http_client_handle_t;
 typedef struct esp_http_client_event *esp_http_client_event_handle_t;

components/esp_https_ota/Kconfig

@@ -0,0 +1,12 @@
+menu "ESP HTTPS OTA"
+
+config OTA_BUF_SIZE
+    int "Default OTA Buffer Size"
+    default 256
+    range 256 1460
+    help
+        Set OTA Buffer Size. The larger buffer size will read more size packet once and can reduce upgrade cost time.
+        This buffer size depends on CONFIG_HTTP_BUF_SIZE. If you want to enlarge ota buffer size, please also enlarge CONFIG_HTTP_BUF_SIZE.
+        OTA_BUF_SIZE equals to 1460 can save 40% upgrade time in contrast to OTA_BUF_SIZE which equals to 256. 
+
+endmenu

components/esp_https_ota/src/esp_https_ota.c

@@ -18,8 +18,9 @@
 #include <esp_https_ota.h>
 #include <esp_ota_ops.h>
 #include <esp_log.h>
+#include "sdkconfig.h"
 
-#define OTA_BUF_SIZE 256
+#define OTA_BUF_SIZE    CONFIG_OTA_BUF_SIZE
 static const char *TAG = "esp_https_ota";
 
 static void http_cleanup(esp_http_client_handle_t client)