src/core/thread/network_data_leader_ftd.hpp - third_party/openthread - Git at Google

 /*
  *  Copyright (c) 2016, The OpenThread Authors.
  *  All rights reserved.
  *
  *  Redistribution and use in source and binary forms, with or without
  *  modification, are permitted provided that the following conditions are met:
  *  1. Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *  3. Neither the name of the copyright holder nor the
  *     names of its contributors may be used to endorse or promote products
  *     derived from this software without specific prior written permission.
  *
  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  *  POSSIBILITY OF SUCH DAMAGE.
  */

 /**
  * @file
  *   This file includes definitions for manipulating Thread Network Data managed by the Thread Leader.
  */

 #ifndef NETWORK_DATA_LEADER_FTD_HPP_
 #define NETWORK_DATA_LEADER_FTD_HPP_

 #include "openthread-core-config.h"

 #if OPENTHREAD_FTD

 #include <stdint.h>

 #include "coap/coap.hpp"
 #include "common/non_copyable.hpp"
 #include "common/timer.hpp"
 #include "net/ip6_address.hpp"
 #include "thread/mle_router.hpp"
 #include "thread/network_data.hpp"

 namespace ot {

 namespace NetworkData {

 /**
  * @addtogroup core-netdata-leader
  *
  * @brief
  *   This module includes definitions for manipulating Thread Network Data managed by the Thread Leader.
  *
  * @{
  *
  */

 /**
  * This class implements the Thread Network Data maintained by the Leader.
  *
  */
 class Leader : public LeaderBase, private NonCopyable
 {
 public:
     /**
      * This enumeration defines the match mode constants to compare two RLOC16 values.
      *
      */
     enum MatchMode : uint8_t
     {
         kMatchModeRloc16,   ///< Perform exact RLOC16 match.
         kMatchModeRouterId, ///< Perform Router ID match (match the router and any of its children).
     };

     /**
      * This constructor initializes the object.
      *
      * @param[in]  aInstance     A reference to the OpenThread instance.
      *
      */
     explicit Leader(Instance &aInstance);

     /**
      * This method reset the Thread Network Data.
      *
      */
     void Reset(void);

     /**
      * This method starts the Leader services.
      *
      * The start mode indicates whether device is starting normally as leader or restoring its role as leader after
      * reset. In the latter case, we do not accept any new registrations (`HandleServerData()`) and wait for
      * `HandleNetworkDataRestoredAfterReset()` to indicate that the leader has successfully recovered the Network Data
      * before allowing new Network Data registrations.
      *
      * @param[in] aStartMode   The start mode.
      *
      */
     void Start(Mle::LeaderStartMode aStartMode);

     /**
      * This method stops the Leader services.
      *
      */
     void Stop(void);

     /**
      * This method increments the Thread Network Data version.
      *
      */
     void IncrementVersion(void);

     /**
      * This method increments both the Thread Network Data version and stable version.
      *
      */
     void IncrementVersionAndStableVersion(void);

     /**
      * This method returns CONTEXT_ID_RESUSE_DELAY value.
      *
      * @returns The CONTEXT_ID_REUSE_DELAY value.
      *
      */
     uint32_t GetContextIdReuseDelay(void) const { return mContextIdReuseDelay; }

     /**
      * This method sets CONTEXT_ID_RESUSE_DELAY value.
      *
      * @warning This method should only be used for testing.
      *
      * @param[in]  aDelay  The CONTEXT_ID_REUSE_DELAY value.
      *
      */
     void SetContextIdReuseDelay(uint32_t aDelay) { mContextIdReuseDelay = aDelay; }

     /**
      * This method removes Network Data entries matching with a given RLOC16.
      *
      * @param[in]  aRloc16    A RLOC16 value.
      * @param[in]  aMatchMode A match mode (@sa MatchMode).
      *
      */
     void RemoveBorderRouter(uint16_t aRloc16, MatchMode aMatchMode);

     /**
      * This method synchronizes internal 6LoWPAN Context ID Set with recently obtained Thread Network Data.
      *
      * Note that this method should be called only by the Leader once after reset.
      *
      */
     void HandleNetworkDataRestoredAfterReset(void);

     /**
      * This method scans network data for given Service ID and returns pointer to the respective TLV, if present.
      *
      * @param aServiceId Service ID to look for.
      * @return Pointer to the Service TLV for given Service ID, or nullptr if not present.
      *
      */
     const ServiceTlv *FindServiceById(uint8_t aServiceId) const;

     /**
      * This method sends SVR_DATA.ntf message for any stale child entries that exist in the network data.
      *
      * @param[in]  aHandler  A function pointer that is called when the transaction ends.
      * @param[in]  aContext  A pointer to arbitrary context information.
      *
      * @retval kErrorNone      A stale child entry was found and successfully enqueued a SVR_DATA.ntf message.
      * @retval kErrorNoBufs    A stale child entry was found, but insufficient message buffers were available.
      * @retval kErrorNotFound  No stale child entries were found.
      *
      */
     Error RemoveStaleChildEntries(Coap::ResponseHandler aHandler, void *aContext);

 #if OPENTHREAD_FTD && OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
     /**
      * This method indicates whether a given Prefix can act as a valid OMR prefix and exists in the network data.
      *
      * @param[in]  aPrefix   The OMR prefix to check.
      *
      * @retval TRUE  If @p aPrefix is a valid OMR prefix and Network Data contains @p aPrefix.
      * @retval FALSE Otherwise.
      *
      */
     bool ContainsOmrPrefix(const Ip6::Prefix &aPrefix);
 #endif

 private:
     class ChangedFlags
     {
     public:
         ChangedFlags(void)
             : mChanged(false)
             , mStableChanged(false)
         {
         }

         void Update(const NetworkDataTlv &aTlv)
         {
             mChanged       = true;
             mStableChanged = (mStableChanged || aTlv.IsStable());
         }

         bool DidChange(void) const { return mChanged; }
         bool DidStableChange(void) const { return mStableChanged; }

     private:
         bool mChanged;       // Any (stable or not) network data change (add/remove).
         bool mStableChanged; // Stable network data change (add/remove).
     };

     enum UpdateStatus : uint8_t
     {
         kTlvRemoved, // TLV contained no sub TLVs and therefore is removed.
         kTlvUpdated, // TLV stable flag is updated based on its sub TLVs.
     };

     static void HandleServerData(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo);
     void        HandleServerData(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

     static void HandleTimer(Timer &aTimer);
     void        HandleTimer(void);

     void RegisterNetworkData(uint16_t aRloc16, const NetworkData &aNetworkData);

     Error AddPrefix(const PrefixTlv &aPrefix, ChangedFlags &aChangedFlags);
     Error AddHasRoute(const HasRouteTlv &aHasRoute, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
     Error AddBorderRouter(const BorderRouterTlv &aBorderRouter, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
     Error AddService(const ServiceTlv &aService, ChangedFlags &aChangedFlags);
     Error AddServer(const ServerTlv &aServer, ServiceTlv &aDstService, ChangedFlags &aChangedFlags);

     Error AllocateServiceId(uint8_t &aServiceId) const;

     Error AllocateContextId(uint8_t &aContextId);
     void  FreeContextId(uint8_t aContextId);
     void  StartContextReuseTimer(uint8_t aContextId);
     void  StopContextReuseTimer(uint8_t aContextId);

     void RemoveContext(uint8_t aContextId);
     void RemoveContext(PrefixTlv &aPrefix, uint8_t aContextId);

     void RemoveCommissioningData(void);

     void RemoveRloc(uint16_t aRloc16, MatchMode aMatchMode, ChangedFlags &aChangedFlags);
     void RemoveRloc(uint16_t           aRloc16,
                     MatchMode          aMatchMode,
                     const NetworkData &aExcludeNetworkData,
                     ChangedFlags &     aChangedFlags);
     void RemoveRlocInPrefix(PrefixTlv &      aPrefix,
                             uint16_t         aRloc16,
                             MatchMode        aMatchMode,
                             const PrefixTlv *aExcludePrefix,
                             ChangedFlags &   aChangedFlags);
     void RemoveRlocInService(ServiceTlv &      aService,
                              uint16_t          aRloc16,
                              MatchMode         aMatchMode,
                              const ServiceTlv *aExcludeService,
                              ChangedFlags &    aChangedFlags);
     void RemoveRlocInHasRoute(PrefixTlv &      aPrefix,
                               HasRouteTlv &    aHasRoute,
                               uint16_t         aRloc16,
                               MatchMode        aMatchMode,
                               const PrefixTlv *aExcludePrefix,
                               ChangedFlags &   aChangedFlags);
     void RemoveRlocInBorderRouter(PrefixTlv &      aPrefix,
                                   BorderRouterTlv &aBorderRouter,
                                   uint16_t         aRloc16,
                                   MatchMode        aMatchMode,
                                   const PrefixTlv *aExcludePrefix,
                                   ChangedFlags &   aChangedFlags);

     static bool RlocMatch(uint16_t aFirstRloc16, uint16_t aSecondRloc16, MatchMode aMatchMode);

     static Error Validate(const NetworkData &aNetworkData, uint16_t aRloc16);
     static Error ValidatePrefix(const PrefixTlv &aPrefix, uint16_t aRloc16);
     static Error ValidateService(const ServiceTlv &aService, uint16_t aRloc16);

     static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const HasRouteEntry &aEntry);
     static bool ContainsMatchingEntry(const HasRouteTlv *aHasRoute, const HasRouteEntry &aEntry);
     static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const BorderRouterEntry &aEntry);
     static bool ContainsMatchingEntry(const BorderRouterTlv *aBorderRouter, const BorderRouterEntry &aEntry);
     static bool ContainsMatchingServer(const ServiceTlv *aService, const ServerTlv &aServer);

     UpdateStatus UpdatePrefix(PrefixTlv &aPrefix);
     UpdateStatus UpdateService(ServiceTlv &aService);
     UpdateStatus UpdateTlv(NetworkDataTlv &aTlv, const NetworkDataTlv *aSubTlvs);

     static void HandleCommissioningSet(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo);
     void        HandleCommissioningSet(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

     static void HandleCommissioningGet(void *aContext, otMessage *aMessage, const otMessageInfo *aMessageInfo);
     void        HandleCommissioningGet(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

     void SendCommissioningGetResponse(const Coap::Message &   aRequest,
                                       uint16_t                aLength,
                                       const Ip6::MessageInfo &aMessageInfo);
     void SendCommissioningSetResponse(const Coap::Message &    aRequest,
                                       const Ip6::MessageInfo & aMessageInfo,
                                       MeshCoP::StateTlv::State aState);
     void IncrementVersions(bool aIncludeStable);
     void IncrementVersions(const ChangedFlags &aFlags);

     static constexpr uint8_t  kMinContextId        = 1;            // Minimum Context ID (0 is used for Mesh Local)
     static constexpr uint8_t  kNumContextIds       = 15;           // Maximum Context ID
     static constexpr uint32_t kContextIdReuseDelay = 48 * 60 * 60; // in seconds
     static constexpr uint32_t kStateUpdatePeriod   = 60 * 1000;    // State update period in milliseconds
     static constexpr uint32_t kMaxNetDataSyncWait  = 60 * 1000;    // Maximum time to wait for netdata sync.

     bool       mWaitingForNetDataSync;
     uint16_t   mContextUsed;
     TimeMilli  mContextLastUsed[kNumContextIds];
     uint32_t   mContextIdReuseDelay;
     TimerMilli mTimer;

     Coap::Resource mServerData;

     Coap::Resource mCommissioningDataGet;
     Coap::Resource mCommissioningDataSet;
 };

 /**
  * @}
  */

 } // namespace NetworkData
 } // namespace ot

 #endif // OPENTHREAD_FTD

 #endif // NETWORK_DATA_LEADER_FTD_HPP_
	/*
	* Copyright (c) 2016, The OpenThread Authors.
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. Neither the name of the copyright holder nor the
	* names of its contributors may be used to endorse or promote products
	* derived from this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*/

	/**
	* @file
	* This file includes definitions for manipulating Thread Network Data managed by the Thread Leader.
	*/

	#ifndef NETWORK_DATA_LEADER_FTD_HPP_
	#define NETWORK_DATA_LEADER_FTD_HPP_

	#include "openthread-core-config.h"

	#if OPENTHREAD_FTD

	#include <stdint.h>

	#include "coap/coap.hpp"
	#include "common/non_copyable.hpp"
	#include "common/timer.hpp"
	#include "net/ip6_address.hpp"
	#include "thread/mle_router.hpp"
	#include "thread/network_data.hpp"

	namespace ot {

	namespace NetworkData {

	/**
	* @addtogroup core-netdata-leader
	*
	* @brief
	* This module includes definitions for manipulating Thread Network Data managed by the Thread Leader.
	*
	* @{
	*
	*/

	/**
	* This class implements the Thread Network Data maintained by the Leader.
	*
	*/
	class Leader : public LeaderBase, private NonCopyable
	{
	public:
	/**
	* This enumeration defines the match mode constants to compare two RLOC16 values.
	*
	*/
	enum MatchMode : uint8_t
	{
	kMatchModeRloc16, ///< Perform exact RLOC16 match.
	kMatchModeRouterId, ///< Perform Router ID match (match the router and any of its children).
	};

	/**
	* This constructor initializes the object.
	*
	* @param[in] aInstance A reference to the OpenThread instance.
	*
	*/
	explicit Leader(Instance &aInstance);

	/**
	* This method reset the Thread Network Data.
	*
	*/
	void Reset(void);

	/**
	* This method starts the Leader services.
	*
	* The start mode indicates whether device is starting normally as leader or restoring its role as leader after
	* reset. In the latter case, we do not accept any new registrations (`HandleServerData()`) and wait for
	* `HandleNetworkDataRestoredAfterReset()` to indicate that the leader has successfully recovered the Network Data
	* before allowing new Network Data registrations.
	*
	* @param[in] aStartMode The start mode.
	*
	*/
	void Start(Mle::LeaderStartMode aStartMode);

	/**
	* This method stops the Leader services.
	*
	*/
	void Stop(void);

	/**
	* This method increments the Thread Network Data version.
	*
	*/
	void IncrementVersion(void);

	/**
	* This method increments both the Thread Network Data version and stable version.
	*
	*/
	void IncrementVersionAndStableVersion(void);

	/**
	* This method returns CONTEXT_ID_RESUSE_DELAY value.
	*
	* @returns The CONTEXT_ID_REUSE_DELAY value.
	*
	*/
	uint32_t GetContextIdReuseDelay(void) const { return mContextIdReuseDelay; }

	/**
	* This method sets CONTEXT_ID_RESUSE_DELAY value.
	*
	* @warning This method should only be used for testing.
	*
	* @param[in] aDelay The CONTEXT_ID_REUSE_DELAY value.
	*
	*/
	void SetContextIdReuseDelay(uint32_t aDelay) { mContextIdReuseDelay = aDelay; }

	/**
	* This method removes Network Data entries matching with a given RLOC16.
	*
	* @param[in] aRloc16 A RLOC16 value.
	* @param[in] aMatchMode A match mode (@sa MatchMode).
	*
	*/
	void RemoveBorderRouter(uint16_t aRloc16, MatchMode aMatchMode);

	/**
	* This method synchronizes internal 6LoWPAN Context ID Set with recently obtained Thread Network Data.
	*
	* Note that this method should be called only by the Leader once after reset.
	*
	*/
	void HandleNetworkDataRestoredAfterReset(void);

	/**
	* This method scans network data for given Service ID and returns pointer to the respective TLV, if present.
	*
	* @param aServiceId Service ID to look for.
	* @return Pointer to the Service TLV for given Service ID, or nullptr if not present.
	*
	*/
	const ServiceTlv *FindServiceById(uint8_t aServiceId) const;

	/**
	* This method sends SVR_DATA.ntf message for any stale child entries that exist in the network data.
	*
	* @param[in] aHandler A function pointer that is called when the transaction ends.
	* @param[in] aContext A pointer to arbitrary context information.
	*
	* @retval kErrorNone A stale child entry was found and successfully enqueued a SVR_DATA.ntf message.
	* @retval kErrorNoBufs A stale child entry was found, but insufficient message buffers were available.
	* @retval kErrorNotFound No stale child entries were found.
	*
	*/
	Error RemoveStaleChildEntries(Coap::ResponseHandler aHandler, void *aContext);

	#if OPENTHREAD_FTD && OPENTHREAD_CONFIG_BORDER_ROUTING_ENABLE
	/**
	* This method indicates whether a given Prefix can act as a valid OMR prefix and exists in the network data.
	*
	* @param[in] aPrefix The OMR prefix to check.
	*
	* @retval TRUE If @p aPrefix is a valid OMR prefix and Network Data contains @p aPrefix.
	* @retval FALSE Otherwise.
	*
	*/
	bool ContainsOmrPrefix(const Ip6::Prefix &aPrefix);
	#endif

	private:
	class ChangedFlags
	{
	public:
	ChangedFlags(void)
	: mChanged(false)
	, mStableChanged(false)
	{
	}

	void Update(const NetworkDataTlv &aTlv)
	{
	mChanged = true;
	mStableChanged = (mStableChanged \|\| aTlv.IsStable());
	}

	bool DidChange(void) const { return mChanged; }
	bool DidStableChange(void) const { return mStableChanged; }

	private:
	bool mChanged; // Any (stable or not) network data change (add/remove).
	bool mStableChanged; // Stable network data change (add/remove).
	};

	enum UpdateStatus : uint8_t
	{
	kTlvRemoved, // TLV contained no sub TLVs and therefore is removed.
	kTlvUpdated, // TLV stable flag is updated based on its sub TLVs.
	};

	static void HandleServerData(void aContext, otMessage aMessage, const otMessageInfo *aMessageInfo);
	void HandleServerData(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

	static void HandleTimer(Timer &aTimer);
	void HandleTimer(void);

	void RegisterNetworkData(uint16_t aRloc16, const NetworkData &aNetworkData);

	Error AddPrefix(const PrefixTlv &aPrefix, ChangedFlags &aChangedFlags);
	Error AddHasRoute(const HasRouteTlv &aHasRoute, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
	Error AddBorderRouter(const BorderRouterTlv &aBorderRouter, PrefixTlv &aDstPrefix, ChangedFlags &aChangedFlags);
	Error AddService(const ServiceTlv &aService, ChangedFlags &aChangedFlags);
	Error AddServer(const ServerTlv &aServer, ServiceTlv &aDstService, ChangedFlags &aChangedFlags);

	Error AllocateServiceId(uint8_t &aServiceId) const;

	Error AllocateContextId(uint8_t &aContextId);
	void FreeContextId(uint8_t aContextId);
	void StartContextReuseTimer(uint8_t aContextId);
	void StopContextReuseTimer(uint8_t aContextId);

	void RemoveContext(uint8_t aContextId);
	void RemoveContext(PrefixTlv &aPrefix, uint8_t aContextId);

	void RemoveCommissioningData(void);

	void RemoveRloc(uint16_t aRloc16, MatchMode aMatchMode, ChangedFlags &aChangedFlags);
	void RemoveRloc(uint16_t aRloc16,
	MatchMode aMatchMode,
	const NetworkData &aExcludeNetworkData,
	ChangedFlags & aChangedFlags);
	void RemoveRlocInPrefix(PrefixTlv & aPrefix,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const PrefixTlv *aExcludePrefix,
	ChangedFlags & aChangedFlags);
	void RemoveRlocInService(ServiceTlv & aService,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const ServiceTlv *aExcludeService,
	ChangedFlags & aChangedFlags);
	void RemoveRlocInHasRoute(PrefixTlv & aPrefix,
	HasRouteTlv & aHasRoute,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const PrefixTlv *aExcludePrefix,
	ChangedFlags & aChangedFlags);
	void RemoveRlocInBorderRouter(PrefixTlv & aPrefix,
	BorderRouterTlv &aBorderRouter,
	uint16_t aRloc16,
	MatchMode aMatchMode,
	const PrefixTlv *aExcludePrefix,
	ChangedFlags & aChangedFlags);

	static bool RlocMatch(uint16_t aFirstRloc16, uint16_t aSecondRloc16, MatchMode aMatchMode);

	static Error Validate(const NetworkData &aNetworkData, uint16_t aRloc16);
	static Error ValidatePrefix(const PrefixTlv &aPrefix, uint16_t aRloc16);
	static Error ValidateService(const ServiceTlv &aService, uint16_t aRloc16);

	static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const HasRouteEntry &aEntry);
	static bool ContainsMatchingEntry(const HasRouteTlv *aHasRoute, const HasRouteEntry &aEntry);
	static bool ContainsMatchingEntry(const PrefixTlv *aPrefix, bool aStable, const BorderRouterEntry &aEntry);
	static bool ContainsMatchingEntry(const BorderRouterTlv *aBorderRouter, const BorderRouterEntry &aEntry);
	static bool ContainsMatchingServer(const ServiceTlv *aService, const ServerTlv &aServer);

	UpdateStatus UpdatePrefix(PrefixTlv &aPrefix);
	UpdateStatus UpdateService(ServiceTlv &aService);
	UpdateStatus UpdateTlv(NetworkDataTlv &aTlv, const NetworkDataTlv *aSubTlvs);

	static void HandleCommissioningSet(void aContext, otMessage aMessage, const otMessageInfo *aMessageInfo);
	void HandleCommissioningSet(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

	static void HandleCommissioningGet(void aContext, otMessage aMessage, const otMessageInfo *aMessageInfo);
	void HandleCommissioningGet(Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo);

	void SendCommissioningGetResponse(const Coap::Message & aRequest,
	uint16_t aLength,
	const Ip6::MessageInfo &aMessageInfo);
	void SendCommissioningSetResponse(const Coap::Message & aRequest,
	const Ip6::MessageInfo & aMessageInfo,
	MeshCoP::StateTlv::State aState);
	void IncrementVersions(bool aIncludeStable);
	void IncrementVersions(const ChangedFlags &aFlags);

	static constexpr uint8_t kMinContextId = 1; // Minimum Context ID (0 is used for Mesh Local)
	static constexpr uint8_t kNumContextIds = 15; // Maximum Context ID
	static constexpr uint32_t kContextIdReuseDelay = 48 * 60 * 60; // in seconds
	static constexpr uint32_t kStateUpdatePeriod = 60 * 1000; // State update period in milliseconds
	static constexpr uint32_t kMaxNetDataSyncWait = 60 * 1000; // Maximum time to wait for netdata sync.

	bool mWaitingForNetDataSync;
	uint16_t mContextUsed;
	TimeMilli mContextLastUsed[kNumContextIds];
	uint32_t mContextIdReuseDelay;
	TimerMilli mTimer;

	Coap::Resource mServerData;

	Coap::Resource mCommissioningDataGet;
	Coap::Resource mCommissioningDataSet;
	};

	/**
	* @}
	*/

	} // namespace NetworkData
	} // namespace ot

	#endif // OPENTHREAD_FTD

	#endif // NETWORK_DATA_LEADER_FTD_HPP_