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diff --git a/FreeRTOS-Plus/Source/FreeRTOS-IoT-Libraries/c_sdk/standard/mqtt/include/iot_mqtt_config_defaults.h b/FreeRTOS-Plus/Source/FreeRTOS-IoT-Libraries/c_sdk/standard/mqtt/include/iot_mqtt_config_defaults.h
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+++ b/FreeRTOS-Plus/Source/FreeRTOS-IoT-Libraries/c_sdk/standard/mqtt/include/iot_mqtt_config_defaults.h
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+/*
+ * Amazon FreeRTOS MQTT V2.0.0
+ * Copyright (C) 2018 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://aws.amazon.com/freertos
+ * http://www.FreeRTOS.org
+ */
+
+/**
+ * @file iot_mqtt_config_defaults.h
+ * @brief MQTT default config options.
+ *
+ * Ensures that the config options for MQTT are set to sensible default
+ * values if the user does not provide one.
+ */
+
+#ifndef _AWS_MQTT_CONFIG_DEFAULTS_H_
+#define _AWS_MQTT_CONFIG_DEFAULTS_H_
+
+/**
+ * @brief Enable subscription management.
+ *
+ * Subscription management allows the user to register per subscription
+ * callback.
+ */
+#ifndef mqttconfigENABLE_SUBSCRIPTION_MANAGEMENT
+    #define mqttconfigENABLE_SUBSCRIPTION_MANAGEMENT    ( 1 )
+#endif
+
+/**
+ * @brief Maximum length of the topic which can be stored in subscription
+ * manager.
+ *
+ * If the user has enabled subscription management (by defining the macro
+ * mqttconfigENABLE_SUBSCRIPTION_MANAGEMENT to 1), then this macro must be defined
+ * to accommodate the maximum length topic which the user is going to subscribe.
+ * The subscribe operation will fail if the user tries to subscribe to a topic
+ * of length more than the maximum specified here.
+ */
+#ifndef mqttconfigSUBSCRIPTION_MANAGER_MAX_TOPIC_LENGTH
+    #define mqttconfigSUBSCRIPTION_MANAGER_MAX_TOPIC_LENGTH    ( 128 )
+#endif
+
+/**
+ * @brief Maximum number of subscriptions which can be stored in subscription
+ * manager.
+ *
+ * If the user has enabled subscription management (by defining the macro
+ * mqttconfigENABLE_SUBSCRIPTION_MANAGEMENT to 1), then this macro must be defined
+ * to the maximum number of topics which the user is going to subscribe
+ * simultaneously. The subscribe operation will fail is the user tries to
+ * subscribe to more topics than the maximum specified here.
+ */
+#ifndef mqttconfigSUBSCRIPTION_MANAGER_MAX_SUBSCRIPTIONS
+    #define mqttconfigSUBSCRIPTION_MANAGER_MAX_SUBSCRIPTIONS    ( 8 )
+#endif
+
+/**
+ * @brief Define mqttconfigASSERT to enable asserts.
+ *
+ * mqttconfigASSERT should be defined to match the semantics of standard
+ * C assert() macro i.e. an assertion should trigger if the parameter
+ * passed is zero. If the standard C assert is available, the user might
+ * do the following:
+ * @code
+ * #define mqttconfigASSERT( x ) assert( x )
+ * @endcode
+ *
+ * Otherwise, a user can choose to implement a function which should be
+ * called when an assertion triggers and then define the mqttconfigASSERT
+ * to that function:
+ * @code
+ * extern void vAssertCalled( const char *pcFile, uint32_t ulLine );
+ * #define mqttconfigASSERT( x ) if( ( x ) == 0 ) vAssertCalled( __FILE__, __LINE__ )
+ * @endcode
+ */
+#ifndef mqttconfigASSERT
+    #define mqttconfigASSERT( x )
+#endif
+
+/**
+ * @brief Define mqttconfigENABLE_DEBUG_LOGS macro to 1 for enabling debug logs.
+ *
+ * If you choose to enable debug logs, the following function must be implemented
+ * which is called to print logs:
+ * @code
+ * void vLoggingPrintf( const char *pcFormatString, ... );
+ * @endcode
+ */
+#if ( mqttconfigENABLE_DEBUG_LOGS == 1 )
+    extern void vLoggingPrintf( const char * pcFormatString,
+                                ... );
+    #define mqttconfigDEBUG_LOG( x )    vLoggingPrintf x
+#else
+    #define mqttconfigDEBUG_LOG( x )
+#endif
+
+#endif /* _AWS_MQTT_CONFIG_DEFAULTS_H_ */