Diff: simple-mbed-cloud-client/mbed-cloud-client/mbed-client/source/include/m2mnsdlinterface.h

Revision:

0:8f0bb79ddd48

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/simple-mbed-cloud-client/mbed-cloud-client/mbed-client/source/include/m2mnsdlinterface.h	Tue May 04 08:55:12 2021 +0000
@@ -0,0 +1,746 @@
+/*
+ * Copyright (c) 2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * 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 M2MNSDLINTERFACE_H
+#define M2MNSDLINTERFACE_H
+
+#include "ns_list.h"
+#include "mbed-client/m2mvector.h"
+#include "mbed-client/m2mconfig.h"
+#include "mbed-client/m2minterface.h"
+#include "mbed-client/m2mtimerobserver.h"
+#include "mbed-client/m2mobservationhandler.h"
+#include "mbed-client/m2mtimer.h"
+#include "mbed-client/m2mbase.h"
+#include "mbed-client/m2mserver.h"
+#include "include/nsdllinker.h"
+#include "eventOS_event.h"
+
+//FORWARD DECLARARTION
+class M2MSecurity;
+class M2MObject;
+class M2MObjectInstance;
+class M2MResource;
+class M2MResourceInstance;
+class M2MNsdlObserver;
+class M2MServer;
+class M2MConnectionHandler;
+class M2MNotificationHandler;
+
+const int UNDEFINED_MSG_ID = -1;
+
+/**
+ * @brief M2MNsdlInterface
+ * Class which interacts between mbed Client C++ Library and mbed-client-c library.
+ */
+class M2MNsdlInterface : public M2MTimerObserver,
+                         public M2MObservationHandler
+{
+private:
+    // Prevents the use of assignment operator by accident.
+    M2MNsdlInterface& operator=( const M2MNsdlInterface& /*other*/ );
+
+    // Prevents the use of copy constructor by accident
+    M2MNsdlInterface( const M2MNsdlInterface& /*other*/ );
+
+public:
+
+    struct request_context_s {
+        request_data_cb     on_request_data_cb;
+        request_error_cb    on_request_error_cb;
+        size_t              received_size;
+        uint32_t            msg_token;
+        char                *uri_path;
+        void                *context;
+        bool                async_req;
+        sn_coap_msg_code_e  msg_code;
+        bool                resend;
+        DownloadType        download_type;
+        ns_list_link_t      link;
+    };
+
+    struct nsdl_coap_data_s {
+        nsdl_s              *nsdl_handle;
+        sn_coap_hdr_s       *received_coap_header;
+        sn_nsdl_addr_s      address;
+    };
+
+    struct coap_response_s {
+        char                 *uri_path;
+        int32_t              msg_id;
+        M2MBase::MessageType type;
+        bool                 blockwise_used;
+        ns_list_link_t       link;
+    };
+
+    typedef NS_LIST_HEAD(request_context_s, link) request_context_list_t;
+
+    typedef NS_LIST_HEAD(coap_response_s, link) response_list_t;
+
+    /**
+    * @brief Constructor
+    * @param observer, Observer to pass the event callbacks from nsdl library.
+    */
+    M2MNsdlInterface(M2MNsdlObserver &observer, M2MConnectionHandler &connection_handler);
+
+    /**
+     * @brief Destructor
+     */
+    virtual ~M2MNsdlInterface();
+
+    /**
+     * @brief Creates endpoint object for the nsdl stack.
+     * @param endpoint_name, Endpoint name of the client.
+     * @param endpoint_type, Endpoint type of the client.
+     * @param life_time, Life time of the client in seconds
+     * @param domain, Domain of the client.
+     * @param mode, Binding mode of the client, default is UDP
+     * @param context_address, Context address default is empty.
+    */
+    void create_endpoint(const String &endpoint_name,
+                         const String &endpoint_type,
+                         const int32_t life_time,
+                         const String &domain,
+                         const uint8_t mode,
+                         const String &context_address);
+
+    /**
+     * @brief Deletes the endpoint.
+    */
+    void delete_endpoint();
+
+    /**
+     * @brief Updates endpoint name.
+    */
+    void update_endpoint(const String &name);
+
+    /**
+     * @brief Updates domain.
+    */
+    void update_domain(const String &domain);
+
+    /**
+     * @brief Creates the NSDL structure for the registered objectlist.
+     * @param list, List of objects implementing the M2MBase interface to be registered.
+     * @return true if structure created successfully else false.
+    */
+    bool create_nsdl_list_structure(const M2MBaseList &list);
+
+    /**
+     * @brief Removed the NSDL resource for the given resource.
+     * @param base, Resource to be removed.
+     * @return true if removed successfully else false.
+    */
+    bool remove_nsdl_resource(M2MBase *base);
+
+    /**
+     * @brief Creates the bootstrap object.
+     * @param address Bootstrap address.
+     * @return true if created and sent successfully else false.
+    */
+    bool create_bootstrap_resource(sn_nsdl_addr_s *address);
+
+    /**
+     * @brief Sets the register message to the server.
+     * @param address M2MServer address.
+     * @param address_length M2MServer address length.
+     * @param port M2MServer port.
+     * @param address_type IP Address type.
+    */
+    void set_server_address(uint8_t* address,
+                            uint8_t address_length,
+                            const uint16_t port,
+                            sn_nsdl_addr_type_e address_type);
+    /**
+     * @brief Sends the register message to the server.
+     * @return  true if register sent successfully else false.
+    */
+    bool send_register_message();
+
+    /**
+     * @brief Sends the CoAP request to the server.
+     * @type Download type.
+     * @uri Uri path to the data.
+     * @msg_code CoAP message code of request to send.
+     * @offset Data offset.
+     * @async In async mode application must call this API again with the updated offset.
+     *        If set to false then client will automatically download the whole package.
+     * @token The token to use for the request, 0 value will generate new token.
+     * @payload_len Length of payload buffer.
+     * @payload_ptr Pointer to payload buffer.
+     * @request_data_cb Callback which is triggered once there is data available.
+     * @request_error_cb Callback which is trigged in case of any error.
+     * @context Application context.
+     */
+    void send_request(DownloadType type,
+                      const char *uri,
+                      const sn_coap_msg_code_e msg_code,
+                      const size_t offset,
+                      const bool async,
+                      uint32_t token,
+                      const uint16_t payload_len,
+                      uint8_t *payload_ptr,
+                      request_data_cb data_cb,
+                      request_error_cb error_cb,
+                      void *context);
+
+    /**
+     * @brief Sends the update registration message to the server.
+     * @param lifetime, Updated lifetime value in seconds.
+     * @return  true if sent successfully else false.
+     *
+    */
+    bool send_update_registration(const uint32_t lifetime = 0);
+
+    /**
+     * @brief Sends unregister message to the server.
+     * @return  true if unregister sent successfully else false.
+    */
+    bool send_unregister_message();
+
+    /**
+     * @brief Memory Allocation required for libCoap.
+     * @param size, Size of memory to be reserved.
+    */
+    static void* memory_alloc(uint32_t size);
+
+    /**
+     * @brief Memory free functions required for libCoap
+     * @param ptr, Object whose memory needs to be freed.
+    */
+    static void memory_free(void *ptr);
+
+    /**
+    * @brief Callback from nsdl library to inform the data is ready
+    * to be sent to server.
+    * @param nsdl_handle, Handler for the nsdl structure for this endpoint
+    * @param protocol, Protocol format of the data
+    * @param data, Data to be sent.
+    * @param data_len, Size of the data to be sent
+    * @param address, server address where data has to be sent.
+    * @return 1 if successful else 0.
+    */
+    uint8_t send_to_server_callback(struct nsdl_s * nsdl_handle,
+                                    sn_nsdl_capab_e protocol,
+                                    uint8_t *data,
+                                    uint16_t data_len,
+                                    sn_nsdl_addr_s *address);
+
+    /**
+    * @brief Callback from nsdl library to inform the data which is
+    * received from server for the client has been converted to coap message.
+    * @param nsdl_handle, Handler for the nsdl structure for this endpoint
+    * @param coap_header, Coap message formed from data.
+    * @param address, Server address from where the data is received.
+    * @return 1 if successful else 0.
+    */
+    uint8_t received_from_server_callback(struct nsdl_s * nsdl_handle,
+                                          sn_coap_hdr_s *coap_header,
+                                          sn_nsdl_addr_s *address);
+
+    /**
+    * @brief Callback from nsdl library to inform the data which is
+    * received from server for the resources has been converted to coap message.
+    * @param nsdl_handle, Handler for the nsdl resource structure for this endpoint..
+    * @param coap_header, Coap message formed from data.
+    * @param address, Server address from where the data is received.
+    * @param nsdl_capab, Protocol for the message, currently only coap is supported.
+    * @return 1 if successful else 0.
+    */
+    uint8_t resource_callback(struct nsdl_s *nsdl_handle, sn_coap_hdr_s *coap,
+                               sn_nsdl_addr_s *address,
+                               sn_nsdl_capab_e nsdl_capab);
+
+    /**
+     * @brief Callback from event loop for handling CoAP messages received from server for the resources
+     * that has been converted to coap message.
+     * @param coap_header, Coap message formed from data.
+     * @param address, Server address from where the data is received.
+     * @return 0 if successful else 1.
+     */
+    uint8_t resource_callback_handle_event(sn_coap_hdr_s *coap,
+                                           sn_nsdl_addr_s *address);
+
+
+    /**
+     * @brief Callback when there is data received from server and needs to be processed.
+     * @param data, data received from server.
+     * @param data_size, data size received from server.
+     * @param addres, address structure of the server.
+     * @return true if successfully processed else false.
+     */
+    bool process_received_data(uint8_t *data,
+                               uint16_t data_size,
+                               sn_nsdl_addr_s *address);
+
+    /**
+     * @brief Stops all the timers in case there is any errors.
+     */
+    void stop_timers();
+
+    /**
+     * @brief Returns nsdl handle.
+     * @return ndsl handle
+     */
+    nsdl_s* get_nsdl_handle() const;
+
+    /**
+     * @brief Get endpoint name
+     * @return endpoint name
+     */
+    const String& endpoint_name() const;
+
+    /**
+     * @brief Get internal endpoint name
+     * @return internal endpoint name
+     */
+    const String internal_endpoint_name() const;
+
+    /**
+     * @brief Set server address
+     * @param server_address, Bootstrap or M2M server address.
+     */
+    void set_server_address(const char *server_address);
+
+    /**
+     * @brief Remove an object from the list kept by the NSDLInteface.
+     * Does not call delete on the object.
+     */
+    bool remove_object_from_list(M2MBase *base);
+
+    /*
+     * @brief Get NSDL timer.
+     * @return NSDL execution timer.
+     */
+    M2MTimer &get_nsdl_execution_timer();
+
+    /**
+     * @brief Get unregister state.
+     * @return Is unregistration ongoing.
+     */
+    bool is_unregister_ongoing() const;
+
+    /**
+     * @brief Get update register state.
+     * @return Is updare registration ongoing.
+     */
+    bool is_update_register_ongoing() const;
+
+    /**
+     * @brief Starts the NSDL execution timer.
+     */
+    void start_nsdl_execution_timer();
+
+    /**
+     * @brief Returns security object.
+     * @return M2MSecurity object, contains lwm2m server information.
+     */
+    M2MSecurity* get_security_object();
+
+    /**
+     * @brief Returns auto-observation token.
+     * @param path, Resource path, used for searching the right object.
+     * @param token[OUT], Token data.
+     * @return Length of the token if found otherwise 0.
+     */
+    uint8_t find_auto_obs_token(const char *path, uint8_t *token) const;
+
+    /**
+     * @brief Set custom uri query paramaters used in LWM2M registration.
+     * @uri_query_params Uri query params. Parameters must be in key-value pair format:
+     * "a=100&b=200". Maximum length can be up to 64 bytes.
+     * @return False if maximum length exceeded otherwise True.
+    */
+    bool set_uri_query_parameters(const char *uri_query_params);
+
+    /**
+     * @brief Clears the sent blockwise message list in CoAP library.
+    */
+    void clear_sent_blockwise_messages();
+
+    /**
+     * @brief Clears the received blockwise message list in CoAP library.
+     */
+    void clear_received_blockwise_messages();
+
+    /**
+     * @brief Send next notification message.
+    */
+    void send_next_notification(bool clear_token);
+
+    /**
+     * @brief Store the "BS finished" response id.
+     * @param msg_id Response id.
+    */
+    void store_bs_finished_response_id(uint16_t msg_id);
+
+    /**
+     * @brief Store the registration state.
+     * @param registered Registered to lwm2m server or not.
+    */
+    void set_registration_status(bool registered);
+
+    /**
+     * @brief Handle incoming bootstrap PUT message.
+     * @param coap_header, Received CoAP message
+     * @param address, Server address
+    */
+    void handle_bootstrap_put_message(sn_coap_hdr_s *coap_header, sn_nsdl_addr_s *address);
+
+    /**
+     * @brief Handle bootstrap finish acknowledgement.
+    */
+    void handle_bootstrap_finish_ack(uint16_t msg_id);
+
+    /**
+     * @brief Returns total retransmission time
+     * @resend_count Resend count
+     * @return Total retransmission time
+    */
+    uint32_t total_retransmission_time(uint32_t resend_count);
+
+    /**
+     * @brief Returns CoAP retransmission count
+     * @return CoAP retransmission count
+    */
+    uint8_t get_resend_count();
+
+    /**
+     * @brief Mark request to be resend again after network break
+     * @param token, Message token
+     * @param token_len, Message token length
+    */
+    void set_request_context_to_be_resend(uint8_t *token, uint8_t token_len);
+
+    /**
+     * @brief Create a new time when to send CoAP ping.
+    */
+    void calculate_new_coap_ping_send_time();
+
+protected: // from M2MTimerObserver
+
+    virtual void timer_expired(M2MTimerObserver::Type type);
+
+protected: // from M2MObservationHandler
+
+    virtual bool observation_to_be_sent(M2MBase *object,
+                                        uint16_t obs_number,
+                                        const m2m::Vector<uint16_t> &changed_instance_ids,
+                                        bool send_object = false);
+
+    virtual void resource_to_be_deleted(M2MBase* base);
+
+    virtual void value_updated(M2MBase *base);
+
+    virtual void remove_object(M2MBase *object);
+#ifndef DISABLE_DELAYED_RESPONSE
+    virtual void send_delayed_response(M2MBase *base);
+#endif //DISABLE_DELAYED_RESPONSE
+
+#ifdef ENABLE_ASYNC_REST_RESPONSE
+    virtual void send_asynchronous_response(M2MBase *base,
+                                            const uint8_t *payload,
+                                            size_t payload_len,
+                                            const uint8_t* token,
+                                            const uint8_t token_len,
+                                            coap_response_code_e code);
+#endif //ENABLE_ASYNC_REST_RESPONSE
+
+private:
+
+    /**
+     * Enum defining an LWM2M object type.
+    */
+    typedef enum {
+        SECURITY = 0x00,
+        SERVER   = 0x01,
+        DEVICE   = 0x02
+    }ObjectType;
+
+    /**
+    * @brief Initializes all the nsdl library component to be usable.
+    * @return true if initialization is successful else false.
+    */
+    bool initialize();
+
+    bool add_object_to_list(M2MBase *base);
+
+    bool create_nsdl_structure(M2MBase *base);
+
+#ifdef MBED_CLOUD_CLIENT_EDGE_EXTENSION
+    bool create_nsdl_endpoint_structure(M2MEndpoint *endpoint);
+#endif
+
+    bool create_nsdl_object_structure(M2MObject *object);
+
+    bool create_nsdl_object_instance_structure(M2MObjectInstance *object_instance);
+
+    bool create_nsdl_resource_structure(M2MResource *resource,
+                                        bool multiple_instances = false);
+
+    bool create_nsdl_resource(M2MBase *base);
+
+    static String coap_to_string(const uint8_t *coap_data_ptr,
+                                 int coap_data_ptr_length);
+
+    void execute_nsdl_process_loop();
+
+    uint64_t registration_time() const;
+
+    M2MBase* find_resource(const String &object) const;
+
+#ifdef MBED_CLOUD_CLIENT_EDGE_EXTENSION
+    M2MBase* find_resource(const M2MEndpoint *endpoint,
+                                             const String &object_name) const;
+#endif
+
+    M2MBase* find_resource(const M2MObject *object,
+                           const String &object_instance) const;
+
+    M2MBase* find_resource(const M2MObjectInstance *object_instance,
+                           const String &resource_instance) const;
+
+    M2MBase* find_resource(const M2MResource *resource,
+                           const String &object_name,
+                           const String &resource_instance) const;
+
+    bool object_present(M2MBase *base) const;
+
+    int object_index(M2MBase *base) const;
+
+    static M2MInterface::Error interface_error(const sn_coap_hdr_s &coap_header);
+
+    void send_object_observation(M2MObject *object,
+                                 uint16_t obs_number,
+                                 const m2m::Vector<uint16_t> &changed_instance_ids,
+                                 bool send_object);
+
+    void send_object_instance_observation(M2MObjectInstance *object_instance,
+                                          uint16_t obs_number);
+
+    void send_resource_observation(M2MResource *resource, uint16_t obs_number);
+
+
+
+    /**
+     * @brief Allocate (size + 1) amount of memory, copy size bytes into
+     * it and add zero termination.
+     * @param source Source string to copy, may not be NULL.
+     * @param size The size of memory to be reserved.
+    */
+    static uint8_t* alloc_string_copy(const uint8_t* source, uint16_t size);
+
+    /**
+     * @brief Utility method to convert given lifetime int to ascii
+     * and allocate a buffer for it and set it to _endpoint->lifetime_ptr.
+     * @param lifetime A new value for lifetime.
+    */
+    void set_endpoint_lifetime_buffer(int lifetime);
+
+    /**
+     * @brief Handle bootstrap finished message.
+     * @param coap_header, Received CoAP message
+     * @param address, Server address
+    */
+    void handle_bootstrap_finished(sn_coap_hdr_s *coap_header,sn_nsdl_addr_s *address);
+
+    /**
+     * @brief Handle bootstrap delete message.
+     * @param coap_header, Received CoAP message
+     * @param address, Server address
+    */
+    void handle_bootstrap_delete(sn_coap_hdr_s *coap_header,sn_nsdl_addr_s *address);
+
+    /**
+     * @brief Parse bootstrap TLV message.
+     * @param coap_header, Received CoAP message
+     * @return True if parsing was succesful else false
+    */
+    bool parse_bootstrap_message(sn_coap_hdr_s *coap_header, M2MNsdlInterface::ObjectType lwm2m_object_type);
+
+    /**
+     * @brief Parse bootstrap TLV message.
+     * @param coap_header, Received CoAP message
+     * @return True if parsing was succesful else false
+    */
+    bool validate_security_object();
+
+    /**
+     * @brief Handle bootstrap errors.
+     * @param reason, Reason for Bootstrap failure.
+     * @param wait, True if need to wait that ACK has been sent.
+     *              False if reconnection can start immediately.
+    */
+    void handle_bootstrap_error(const char *reason, bool wait);
+
+    /**
+     * @brief Handle different coap errors.
+     * @param coap_header, CoAP structure.
+     * @return Error reason.
+    */
+    static const char *coap_error(const sn_coap_hdr_s &coap_header);
+
+    /**
+     * @brief Claim
+     */
+    void claim_mutex();
+
+    /**
+     * @brief Release
+     */
+    void release_mutex();
+
+    /**
+     * @brief Change operation mode of every resource.
+     * @param object, Object to be updated.
+     * @return operation, New operation mode.
+    */
+    void change_operation_mode(M2MObject *object, M2MBase::Operation operation);
+
+    /**
+     * @brief Parse URI query parameters and pass those to nsdl-c.
+     * @return True if parsing success otherwise False
+    */
+    bool parse_and_send_uri_query_parameters();
+
+    /**
+     * @brief Callback function that triggers the registration update call.
+     * @param argument, Arguments part of the POST request.
+    */
+    void update_trigger_callback(void *argument);
+
+    bool lifetime_value_changed() const;
+
+    void execute_notification_delivery_status_cb(M2MBase* object, int32_t msgid);
+
+    bool is_response_to_request(const sn_coap_hdr_s *coap_header,
+                                struct request_context_s &get_data);
+
+    void free_request_context_list(const sn_coap_hdr_s *coap_header, bool call_error_cb, request_error_t error_code = FAILED_TO_SEND_MSG);
+
+    void free_response_list();
+
+    void remove_item_from_response_list(const char* uri_path, const int32_t msg_id);
+
+#if !defined(DISABLE_DELAYED_RESPONSE) || defined(ENABLE_ASYNC_REST_RESPONSE)
+    void remove_items_from_response_list_for_uri(const char* uri_path);
+#endif
+    /**
+     * @brief Send next notification for object, return true if notification sent, false
+     *        if no notification to send or send already in progress.
+     * @param object, M2MObject whose next notification should be sent
+     * @param clear_token, Flag to indicate whether observation token should be cleared.
+     * @return True if notification sent, false otherwise or if send already in progress
+     */
+    bool send_next_notification_for_object(M2MObject& object, bool clear_token);
+
+    static char* parse_uri_query_parameters(char* uri);
+
+    void send_coap_ping();
+
+    void send_empty_ack(const sn_coap_hdr_s *header, sn_nsdl_addr_s *address);
+
+    struct M2MNsdlInterface::nsdl_coap_data_s* create_coap_event_data(sn_coap_hdr_s *received_coap_header,
+                                                  sn_nsdl_addr_s *address,
+                                                  struct nsdl_s *nsdl_handle,
+                                                  uint8_t coap_msg_code = COAP_MSG_CODE_EMPTY);
+
+    void handle_register_response(const sn_coap_hdr_s *coap_header);
+
+    void handle_unregister_response(const sn_coap_hdr_s *coap_header);
+
+    void handle_register_update_response(const sn_coap_hdr_s *coap_header);
+
+    void handle_request_response(const sn_coap_hdr_s *coap_header, struct request_context_s *request_context);
+
+    void handle_bootstrap_response(const sn_coap_hdr_s *coap_header);
+
+    void handle_message_delivered(M2MBase *base, const M2MBase::MessageType type);
+
+    void handle_empty_ack(const sn_coap_hdr_s *coap_header, bool is_bootstrap_msg);
+
+    bool handle_post_response(sn_coap_hdr_s *coap_header,
+                              sn_nsdl_addr_s *address,
+                              sn_coap_hdr_s *&coap_response,
+                              M2MObjectInstance *&obj_instance,
+                              bool is_bootstrap_msg);
+
+    void set_retransmission_parameters();
+
+    void send_pending_request();
+
+    void store_to_response_list(const char *uri, int32_t msg_id, M2MBase::MessageType type);
+
+    struct coap_response_s* find_response(int32_t msg_id);
+
+#if !defined(DISABLE_DELAYED_RESPONSE) || defined(ENABLE_ASYNC_REST_RESPONSE)
+    struct coap_response_s* find_delayed_response(const char* uri_path,
+                                                  const M2MBase::MessageType type,
+                                                  int32_t message_id = UNDEFINED_MSG_ID);
+
+    bool handle_delayed_response_store(const char* uri_path,
+                                       sn_coap_hdr_s* received_coap,
+                                       sn_nsdl_addr_s *address,
+                                       const M2MBase::MessageType message_type);
+#endif
+
+    void failed_to_send_request(request_context_s *request, const sn_coap_hdr_s *coap_header);
+
+    bool coap_ping_in_process() const;
+
+    void remove_ping_from_response_list();
+
+#ifdef ENABLE_ASYNC_REST_RESPONSE
+    static M2MBase::Operation operation_for_message_code(sn_coap_msg_code_e code);
+#endif // ENABLE_ASYNC_REST_RESPONSE
+
+private:
+    M2MNsdlObserver                         &_observer;
+    M2MBaseList                             _base_list;
+    sn_nsdl_ep_parameters_s                 *_endpoint;
+    nsdl_s                                  *_nsdl_handle;
+    M2MSecurity                             *_security; // Not owned
+    M2MServer                               *_server;
+    M2MTimer                                _nsdl_execution_timer;
+    M2MTimer                                _registration_timer;
+    M2MConnectionHandler                    &_connection_handler;
+    String                                  _endpoint_name;
+    String                                  _internal_endpoint_name;
+    uint32_t                                _counter_for_nsdl;
+    uint32_t                                _next_coap_ping_send_time;
+    char                                    *_server_address; // BS or M2M address
+    request_context_list_t                  _request_context_list;
+    response_list_t                         _response_list;
+    char                                    *_custom_uri_query_params;
+    M2MNotificationHandler                  *_notification_handler;
+    arm_event_storage_t                     _event;
+    uint16_t                                _auto_obs_token;
+    uint16_t                                _bootstrap_id;
+    static int8_t                           _tasklet_id;
+    uint8_t                                 _binding_mode;
+    bool                                    _identity_accepted;
+    bool                                    _nsdl_execution_timer_running;
+    bool                                    _notification_send_ongoing;
+    bool                                    _registered;
+    bool                                    _bootstrap_finish_ack_received;
+    M2MTimer                                _download_retry_timer;
+    uint64_t                                _download_retry_time;
+
+friend class Test_M2MNsdlInterface;
+
+};
+
+#endif // M2MNSDLINTERFACE_H
+