csip: Add Coordinated Set Identification Profile (d35f8bcd) · Commits · e / os / android_frameworks_base

core/api/current.txt

+9 −0

Original line number	Diff line number	Diff line
		@@ -9020,6 +9020,15 @@ package android.bluetooth {
		field public static final int TELEPHONY = 4194304; // 0x400000
		}

		public final class BluetoothCsipSetCoordinator implements java.lang.AutoCloseable android.bluetooth.BluetoothProfile {
		method public void close();
		method protected void finalize();
		method @NonNull public java.util.List<android.bluetooth.BluetoothDevice> getConnectedDevices();
		method public int getConnectionState(@Nullable android.bluetooth.BluetoothDevice);
		method @NonNull public java.util.List<android.bluetooth.BluetoothDevice> getDevicesMatchingConnectionStates(@NonNull int[]);
		field @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) public static final String ACTION_CSIS_CONNECTION_STATE_CHANGED = "android.bluetooth.action.CSIS_CONNECTION_STATE_CHANGED";
		}

		public final class BluetoothDevice implements android.os.Parcelable {
		method @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) public android.bluetooth.BluetoothGatt connectGatt(android.content.Context, boolean, android.bluetooth.BluetoothGattCallback);
		method @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) public android.bluetooth.BluetoothGatt connectGatt(android.content.Context, boolean, android.bluetooth.BluetoothGattCallback, int);

core/api/system-current.txt

+15 −0

Original line number	Diff line number	Diff line
		@@ -1963,6 +1963,21 @@ package android.bluetooth {
		method public void onOobData(int, @NonNull android.bluetooth.OobData);
		}

		public final class BluetoothCsipSetCoordinator implements java.lang.AutoCloseable android.bluetooth.BluetoothProfile {
		method @NonNull @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public java.util.List<java.lang.Integer> getAllGroupIds(@Nullable android.os.ParcelUuid);
		method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public int getConnectionPolicy(@Nullable android.bluetooth.BluetoothDevice);
		method @NonNull @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public java.util.Map getGroupUuidMapByDevice(@Nullable android.bluetooth.BluetoothDevice);
		method @Nullable @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public java.util.UUID groupLock(int, @Nullable java.util.concurrent.Executor, @Nullable android.bluetooth.BluetoothCsipSetCoordinator.ClientLockCallback);
		method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public boolean groupUnlock(@NonNull java.util.UUID);
		method @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public boolean setConnectionPolicy(@Nullable android.bluetooth.BluetoothDevice, int);
		field @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public static final String ACTION_CSIS_DEVICE_AVAILABLE = "android.bluetooth.action.CSIS_DEVICE_AVAILABLE";
		field @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) public static final String ACTION_CSIS_SET_MEMBER_AVAILABLE = "android.bluetooth.action.CSIS_SET_MEMBER_AVAILABLE";
		}

		public static interface BluetoothCsipSetCoordinator.ClientLockCallback {
		method public void onGroupLockSet(int, int, boolean);
		}

		public final class BluetoothDevice implements android.os.Parcelable {
		method @RequiresPermission(allOf={android.Manifest.permission.BLUETOOTH_CONNECT, android.Manifest.permission.BLUETOOTH_PRIVILEGED}) public boolean canBondWithoutDialog();
		method @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) public boolean cancelBondProcess();

core/java/android/bluetooth/BluetoothAdapter.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -3062,6 +3062,10 @@ public final class BluetoothAdapter {
		} else if (profile == BluetoothProfile.VOLUME_CONTROL) {
		BluetoothVolumeControl vcs = new BluetoothVolumeControl(context, listener, this);
		return true;
		} else if (profile == BluetoothProfile.CSIP_SET_COORDINATOR) {
		BluetoothCsipSetCoordinator csipSetCoordinator =
		new BluetoothCsipSetCoordinator(context, listener, this);
		return true;
		} else {
		return false;
		}
		@@ -3159,6 +3163,11 @@ public final class BluetoothAdapter {
		BluetoothVolumeControl vcs = (BluetoothVolumeControl) proxy;
		vcs.close();
		break;
		case BluetoothProfile.CSIP_SET_COORDINATOR:
		BluetoothCsipSetCoordinator csipSetCoordinator =
		(BluetoothCsipSetCoordinator) proxy;
		csipSetCoordinator.close();
		break;
		}
		}

core/java/android/bluetooth/BluetoothCsipSetCoordinator.java

0 → 100644

+553 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright 2021 HIMSA II K/S - www.himsa.com.
		* Represented by EHIMA - www.ehima.com
		*
		* 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.
		*/

		package android.bluetooth;

		import android.Manifest;
		import android.annotation.CallbackExecutor;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.annotation.RequiresPermission;
		import android.annotation.SdkConstant;
		import android.annotation.SdkConstant.SdkConstantType;
		import android.annotation.SystemApi;
		import android.content.AttributionSource;
		import android.content.Context;
		import android.os.Binder;
		import android.os.IBinder;
		import android.os.ParcelUuid;
		import android.os.RemoteException;
		import android.util.CloseGuard;
		import android.util.Log;

		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.HashMap;
		import java.util.List;
		import java.util.Map;
		import java.util.UUID;
		import java.util.concurrent.Executor;

		/**
		* This class provides the public APIs to control the Bluetooth CSIP set coordinator.
		*
		* <p>BluetoothCsipSetCoordinator is a proxy object for controlling the Bluetooth VC
		* Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get
		* the BluetoothCsipSetCoordinator proxy object.
		*
		*/
		public final class BluetoothCsipSetCoordinator implements BluetoothProfile, AutoCloseable {
		private static final String TAG = "BluetoothCsipSetCoordinator";
		private static final boolean DBG = false;
		private static final boolean VDBG = false;

		private CloseGuard mCloseGuard;

		/**
		* @hide
		*/
		@SystemApi
		public interface ClientLockCallback {
		/**
		* @hide
		*/
		@SystemApi void onGroupLockSet(int groupId, int opStatus, boolean isLocked);
		}

		private static class BluetoothCsipSetCoordinatorLockCallbackDelegate
		extends IBluetoothCsipSetCoordinatorLockCallback.Stub {
		private final ClientLockCallback mCallback;
		private final Executor mExecutor;

		BluetoothCsipSetCoordinatorLockCallbackDelegate(
		Executor executor, ClientLockCallback callback) {
		mExecutor = executor;
		mCallback = callback;
		}

		@Override
		public void onGroupLockSet(int groupId, int opStatus, boolean isLocked) {
		mExecutor.execute(() -> mCallback.onGroupLockSet(groupId, opStatus, isLocked));
		}
		};

		/**
		* Intent used to broadcast the change in connection state of the CSIS
		* Client.
		*
		* <p>This intent will have 3 extras:
		* <ul>
		* <li> {@link #EXTRA_STATE} - The current state of the profile. </li>
		* <li> {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.</li>
		* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. </li>
		* </ul>
		*
		* <p>{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of
		* {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING},
		* {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}.
		*/
		@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
		@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
		public static final String ACTION_CSIS_CONNECTION_STATE_CHANGED =
		"android.bluetooth.action.CSIS_CONNECTION_STATE_CHANGED";

		/**
		* Intent used to expose broadcast receiving device.
		*
		* <p>This intent will have 2 extras:
		* <ul>
		* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote Broadcast receiver device. </li>
		* <li> {@link #EXTRA_CSIS_GROUP_ID} - Group identifier. </li>
		* <li> {@link #EXTRA_CSIS_GROUP_SIZE} - Group size. </li>
		* <li> {@link #EXTRA_CSIS_GROUP_TYPE_UUID} - Group type UUID. </li>
		* </ul>
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
		@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
		public static final String ACTION_CSIS_DEVICE_AVAILABLE =
		"android.bluetooth.action.CSIS_DEVICE_AVAILABLE";

		/**
		* Used as an extra field in {@link #ACTION_CSIS_DEVICE_AVAILABLE} intent.
		* Contains the group id.
		*
		* @hide
		*/
		public static final String EXTRA_CSIS_GROUP_ID = "android.bluetooth.extra.CSIS_GROUP_ID";

		/**
		* Group size as int extra field in {@link #ACTION_CSIS_DEVICE_AVAILABLE} intent.
		*
		* @hide
		*/
		public static final String EXTRA_CSIS_GROUP_SIZE = "android.bluetooth.extra.CSIS_GROUP_SIZE";

		/**
		* Group type uuid extra field in {@link #ACTION_CSIS_DEVICE_AVAILABLE} intent.
		*
		* @hide
		*/
		public static final String EXTRA_CSIS_GROUP_TYPE_UUID =
		"android.bluetooth.extra.CSIS_GROUP_TYPE_UUID";

		/**
		* Intent used to broadcast information about identified set member
		* ready to connect.
		*
		* <p>This intent will have one extra:
		* <ul>
		* <li> {@link BluetoothDevice#EXTRA_DEVICE} - The remote device. It can
		* be null if no device is active. </li>
		* <li> {@link #EXTRA_CSIS_GROUP_ID} - Group identifier. </li>
		* </ul>
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED)
		@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
		public static final String ACTION_CSIS_SET_MEMBER_AVAILABLE =
		"android.bluetooth.action.CSIS_SET_MEMBER_AVAILABLE";

		/**
		* This represents an invalid group ID.
		*
		* @hide
		*/
		public static final int GROUP_ID_INVALID = IBluetoothCsipSetCoordinator.CSIS_GROUP_ID_INVALID;

		/**
		* Indicating that group was locked with success.
		*
		* @hide
		*/
		public static final int GROUP_LOCK_SUCCESS = 0;

		/**
		* Indicating that group locked failed due to invalid group ID.
		*
		* @hide
		*/
		public static final int GROUP_LOCK_FAILED_INVALID_GROUP = 1;

		/**
		* Indicating that group locked failed due to empty group.
		*
		* @hide
		*/
		public static final int GROUP_LOCK_FAILED_GROUP_EMPTY = 2;

		/**
		* Indicating that group locked failed due to group members being disconnected.
		*
		* @hide
		*/
		public static final int GROUP_LOCK_FAILED_GROUP_NOT_CONNECTED = 3;

		/**
		* Indicating that group locked failed due to group member being already locked.
		*
		* @hide
		*/
		public static final int GROUP_LOCK_FAILED_LOCKED_BY_OTHER = 4;

		/**
		* Indicating that group locked failed due to other reason.
		*
		* @hide
		*/
		public static final int GROUP_LOCK_FAILED_OTHER_REASON = 5;

		/**
		* Indicating that group member in locked state was lost.
		*
		* @hide
		*/
		public static final int LOCKED_GROUP_MEMBER_LOST = 6;

		private final BluetoothAdapter mAdapter;
		private final AttributionSource mAttributionSource;
		private final BluetoothProfileConnector<IBluetoothCsipSetCoordinator> mProfileConnector =
		new BluetoothProfileConnector(this, BluetoothProfile.CSIP_SET_COORDINATOR, TAG,
		IBluetoothCsipSetCoordinator.class.getName()) {
		@Override
		public IBluetoothCsipSetCoordinator getServiceInterface(IBinder service) {
		return IBluetoothCsipSetCoordinator.Stub.asInterface(
		Binder.allowBlocking(service));
		}
		};

		/**
		* Create a BluetoothCsipSetCoordinator proxy object for interacting with the local
		* Bluetooth CSIS service.
		*/
		/package/ BluetoothCsipSetCoordinator(Context context, ServiceListener listener, BluetoothAdapter adapter) {
		mAdapter = adapter;
		mAttributionSource = adapter.getAttributionSource();
		mProfileConnector.connect(context, listener);
		mCloseGuard = new CloseGuard();
		mCloseGuard.open("close");
		}

		/**
		* @hide
		*/
		protected void finalize() {
		if (mCloseGuard != null) {
		mCloseGuard.warnIfOpen();
		}
		close();
		}

		/**
		* @hide
		*/
		public void close() {
		mProfileConnector.disconnect();
		}

		private IBluetoothCsipSetCoordinator getService() {
		return mProfileConnector.getService();
		}

		/**
		* Lock the set.
		* @param groupId group ID to lock,
		* @param executor callback executor,
		* @param cb callback to report lock and unlock events - stays valid until the app unlocks
		* using the returned lock identifier or the lock timeouts on the remote side,
		* as per CSIS specification,
		* @return unique lock identifier used for unlocking or null if lock has failed.
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
		public
		@Nullable UUID groupLock(int groupId, @Nullable @CallbackExecutor Executor executor,
		@Nullable ClientLockCallback cb) {
		if (VDBG) {
		log("groupLockSet()");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		try {
		if (service != null && isEnabled()) {
		IBluetoothCsipSetCoordinatorLockCallback delegate = null;
		if ((executor != null) && (cb != null)) {
		delegate = new BluetoothCsipSetCoordinatorLockCallbackDelegate(executor, cb);
		}
		return service.groupLock(groupId, delegate, mAttributionSource).getUuid();
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return null;
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return null;
		}
		}

		/**
		* Unlock the set.
		* @param lockUuid unique lock identifier
		* @return true if unlocked, false on error
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
		public boolean groupUnlock(@NonNull UUID lockUuid) {
		if (VDBG) {
		log("groupLockSet()");
		}
		if (lockUuid == null) {
		return false;
		}

		final IBluetoothCsipSetCoordinator service = getService();
		try {
		if (service != null && isEnabled()) {
		service.groupUnlock(new ParcelUuid(lockUuid), mAttributionSource);
		return true;
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return false;
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return false;
		}
		}

		/**
		* Get device's groups.
		* @param device the active device
		* @return Map of groups ids and related UUIDs
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
		public @NonNull Map getGroupUuidMapByDevice(@Nullable BluetoothDevice device) {
		if (VDBG) {
		log("getGroupUuidMapByDevice()");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		try {
		if (service != null && isEnabled()) {
		return service.getGroupUuidMapByDevice(device, mAttributionSource);
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return new HashMap<>();
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return new HashMap<>();
		}
		}

		/**
		* Get group id for the given UUID
		* @param uuid
		* @return list of group IDs
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
		public @NonNull List<Integer> getAllGroupIds(@Nullable ParcelUuid uuid) {
		if (VDBG) {
		log("getAllGroupIds()");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		try {
		if (service != null && isEnabled()) {
		return service.getAllGroupIds(uuid, mAttributionSource);
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return new ArrayList<Integer>();
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return new ArrayList<Integer>();
		}
		}

		/**
		* {@inheritDoc}
		*/
		@Override
		public @NonNull List<BluetoothDevice> getConnectedDevices() {
		if (VDBG) {
		log("getConnectedDevices()");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		if (service != null && isEnabled()) {
		try {
		return service.getConnectedDevices(mAttributionSource);
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return new ArrayList<BluetoothDevice>();
		}
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return new ArrayList<BluetoothDevice>();
		}

		/**
		* {@inheritDoc}
		*/
		@Override
		public
		@NonNull List<BluetoothDevice> getDevicesMatchingConnectionStates(
		@NonNull int[] states) {
		if (VDBG) {
		log("getDevicesMatchingStates(states=" + Arrays.toString(states) + ")");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		if (service != null && isEnabled()) {
		try {
		return service.getDevicesMatchingConnectionStates(states, mAttributionSource);
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return new ArrayList<BluetoothDevice>();
		}
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return new ArrayList<BluetoothDevice>();
		}

		/**
		* {@inheritDoc}
		*/
		@Override
		public
		@BluetoothProfile.BtProfileState int getConnectionState(
		@Nullable BluetoothDevice device) {
		if (VDBG) {
		log("getState(" + device + ")");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		if (service != null && isEnabled() && isValidDevice(device)) {
		try {
		return service.getConnectionState(device, mAttributionSource);
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return BluetoothProfile.STATE_DISCONNECTED;
		}
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return BluetoothProfile.STATE_DISCONNECTED;
		}

		/**
		* Set connection policy of the profile
		*
		* <p> The device should already be paired.
		* Connection policy can be one of {@link #CONNECTION_POLICY_ALLOWED},
		* {@link #CONNECTION_POLICY_FORBIDDEN}, {@link #CONNECTION_POLICY_UNKNOWN}
		*
		* @param device Paired bluetooth device
		* @param connectionPolicy is the connection policy to set to for this profile
		* @return true if connectionPolicy is set, false on error
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
		public boolean setConnectionPolicy(
		@Nullable BluetoothDevice device, @ConnectionPolicy int connectionPolicy) {
		if (DBG) {
		log("setConnectionPolicy(" + device + ", " + connectionPolicy + ")");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		try {
		if (service != null && isEnabled() && isValidDevice(device)) {
		if (connectionPolicy != BluetoothProfile.CONNECTION_POLICY_FORBIDDEN
		&& connectionPolicy != BluetoothProfile.CONNECTION_POLICY_ALLOWED) {
		return false;
		}
		return service.setConnectionPolicy(device, connectionPolicy, mAttributionSource);
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return false;
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return false;
		}
		}

		/**
		* Get the connection policy of the profile.
		*
		* <p> The connection policy can be any of:
		* {@link #CONNECTION_POLICY_ALLOWED}, {@link #CONNECTION_POLICY_FORBIDDEN},
		* {@link #CONNECTION_POLICY_UNKNOWN}
		*
		* @param device Bluetooth device
		* @return connection policy of the device
		*
		* @hide
		*/
		@SystemApi
		@RequiresPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
		public @ConnectionPolicy int getConnectionPolicy(@Nullable BluetoothDevice device) {
		if (VDBG) {
		log("getConnectionPolicy(" + device + ")");
		}
		final IBluetoothCsipSetCoordinator service = getService();
		try {
		if (service != null && isEnabled() && isValidDevice(device)) {
		return service.getConnectionPolicy(device, mAttributionSource);
		}
		if (service == null) {
		Log.w(TAG, "Proxy not attached to service");
		}
		return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
		} catch (RemoteException e) {
		Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
		return BluetoothProfile.CONNECTION_POLICY_FORBIDDEN;
		}
		}

		private boolean isEnabled() {
		return mAdapter.getState() == BluetoothAdapter.STATE_ON;
		}

		private static boolean isValidDevice(@Nullable BluetoothDevice device) {
		return device != null && BluetoothAdapter.checkBluetoothAddress(device.getAddress());
		}

		private static void log(String msg) {
		Log.d(TAG, msg);
		}
		}

core/res/AndroidManifest.xml

+3 −0

Original line number	Diff line number	Diff line
		@@ -201,6 +201,9 @@
		android:name="android.bluetooth.hearingaid.profile.action.PLAYING_STATE_CHANGED" />
		<protected-broadcast
		android:name="android.bluetooth.hearingaid.profile.action.ACTIVE_DEVICE_CHANGED" />
		<protected-broadcast android:name="android.bluetooth.action.CSIS_CONNECTION_STATE_CHANGED" />
		<protected-broadcast android:name="android.bluetooth.action.CSIS_DEVICE_AVAILABLE" />
		<protected-broadcast android:name="android.bluetooth.action.CSIS_SET_MEMBER_AVAILABLE" />
		<protected-broadcast
		android:name="android.bluetooth.volume-control.profile.action.CONNECTION_STATE_CHANGED" />
		<protected-broadcast