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Commit 16bf8469 authored by Andre Eisenbach's avatar Andre Eisenbach
Browse files

Add server-side callback for change in MTU (4/4) 

When a client requests to update the LE transport MTU, the server
currently does not get notified and can therefor not properly size
notifications appropriate to the current MTU.

Bug: 18388114
Change-Id: I515bfc2cc9846490d57de71860f41ea9a61fa243
parent a181da10

api/current.txt

+1 −0
Original line number Diff line number Diff line
@@ -6383,6 +6383,7 @@ package android.bluetooth { 
    method public void onDescriptorReadRequest(android.bluetooth.BluetoothDevice, int, int, android.bluetooth.BluetoothGattDescriptor);

    method public void onDescriptorWriteRequest(android.bluetooth.BluetoothDevice, int, android.bluetooth.BluetoothGattDescriptor, boolean, boolean, int, byte[]);

    method public void onExecuteWrite(android.bluetooth.BluetoothDevice, int, boolean);

    method public void onMtuChanged(android.bluetooth.BluetoothDevice, int);

    method public void onNotificationSent(android.bluetooth.BluetoothDevice, int);

    method public void onServiceAdded(int, android.bluetooth.BluetoothGattService);

  }

core/java/android/bluetooth/BluetoothGattServer.java

+18 −0
Original line number Diff line number Diff line
@@ -284,6 +284,24 @@ public final class BluetoothGattServer implements BluetoothProfile { 
                    Log.w(TAG, "Unhandled exception: " + ex);

                }

            }



            /**

             * The MTU for a connection has changed

             * @hide

             */

            public void onMtuChanged(String address, int mtu) {

                if (DBG) Log.d(TAG, "onMtuChanged() - "

                    + "device=" + address + ", mtu=" + mtu);



                BluetoothDevice device = mAdapter.getRemoteDevice(address);

                if (device == null) return;



                try {

                    mCallback.onMtuChanged(device, mtu);

                } catch (Exception ex) {

                    Log.w(TAG, "Unhandled exception: " + ex);

                }

            }

        };



    /**

core/java/android/bluetooth/BluetoothGattServerCallback.java

+12 −0
Original line number Diff line number Diff line
@@ -145,4 +145,16 @@ public abstract class BluetoothGattServerCallback { 
     */

    public void onNotificationSent(BluetoothDevice device, int status) {

    }



    /**

     * Callback indicating the MTU for a given device connection has changed.

     *

     * <p>This callback will be invoked if a remote client has requested to change

     * the MTU for a given connection.

     *

     * @param device The remote device that requested the MTU change

     * @param mtu The new MTU size

     */

    public void onMtuChanged(BluetoothDevice device, int mtu) {

    }

}

core/java/android/bluetooth/IBluetoothGattServerCallback.aidl

+1 −0
Original line number Diff line number Diff line
@@ -59,4 +59,5 @@ oneway interface IBluetoothGattServerCallback { 
                                     in byte[] value);

    void onExecuteWrite(in String address, in int transId, in boolean execWrite);

    void onNotificationSent(in String address, in int status);

    void onMtuChanged(in String address, in int mtu);

}