feat(tls): update esp-tls and tcp_transport from idf

Commit ID:88bf21b2

components/tcp_transport/private_include/esp_transport_utils.h

@@ -0,0 +1,49 @@
+// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _ESP_TRANSPORT_UTILS_H_
+#define _ESP_TRANSPORT_UTILS_H_
+#include <sys/time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief      Utility macro to be used for NULL ptr check after malloc
+ *
+ */
+#define ESP_TRANSPORT_MEM_CHECK(TAG, a, action) if (!(a)) {                                         \
+        ESP_LOGE(TAG,"%s:%d (%s): %s", __FILE__, __LINE__, __FUNCTION__, "Memory exhausted");       \
+        action;                                                                                     \
+        }
+
+/**
+ * @brief      Convert milliseconds to timeval struct for valid timeouts, otherwise
+ *             (if "wait forever" requested by timeout_ms=-1) timeval structure is not updated and NULL returned
+ *
+ * @param[in]  timeout_ms  The timeout value in milliseconds or -1 to waiting forever
+ * @param[out] tv          Pointer to timeval struct
+ *
+ * @return
+ * - NULL if timeout_ms=-1 (wait forever)
+ * - pointer to the updated timeval structure (provided as "tv" argument) with recalculated timeout value
+ */
+struct timeval* esp_transport_utils_ms_to_timeval(int timeout_ms, struct timeval *tv);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _ESP_TRANSPORT_UTILS_H_ */