| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * 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.os.Handler; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| |
| /** |
| * A listening Bluetooth socket. |
| * |
| * <p>The interface for Bluetooth Sockets is similar to that of TCP sockets: |
| * {@link java.net.Socket} and {@link java.net.ServerSocket}. On the server |
| * side, use a {@link BluetoothServerSocket} to create a listening server |
| * socket. It will return a new, connected {@link BluetoothSocket} on an |
| * accepted connection. On the client side, use the same |
| * {@link BluetoothSocket} object to both intiate the outgoing connection, |
| * and to manage the connected socket. |
| * |
| * <p>The most common type of Bluetooth Socket is RFCOMM. RFCOMM is a |
| * connection orientated, streaming transport over Bluetooth. It is also known |
| * as the Serial Port Profile (SPP). |
| * |
| * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to create |
| * a new {@link BluetoothSocket} ready for an outgoing connection to a remote |
| * {@link BluetoothDevice}. |
| * |
| * <p>Use {@link BluetoothAdapter#listenUsingRfcommWithServiceRecord} to |
| * create a listening {@link BluetoothServerSocket} ready for incoming |
| * connections to the local {@link BluetoothAdapter}. |
| * |
| * <p>{@link BluetoothSocket} and {@link BluetoothServerSocket} are thread |
| * safe. In particular, {@link #close} will always immediately abort ongoing |
| * operations and close the socket. |
| * |
| * <p>All methods on a {@link BluetoothServerSocket} require |
| * {@link android.Manifest.permission#BLUETOOTH} |
| */ |
| public final class BluetoothServerSocket implements Closeable { |
| |
| /*package*/ final BluetoothSocket mSocket; |
| private Handler mHandler; |
| private int mMessage; |
| |
| /** |
| * Construct a socket for incoming connections. |
| * @param type type of socket |
| * @param auth require the remote device to be authenticated |
| * @param encrypt require the connection to be encrypted |
| * @param port remote port |
| * @throws IOException On error, for example Bluetooth not available, or |
| * insufficient priveleges |
| */ |
| /*package*/ BluetoothServerSocket(int type, boolean auth, boolean encrypt, int port) |
| throws IOException { |
| mSocket = new BluetoothSocket(type, -1, auth, encrypt, null, port, null); |
| } |
| |
| /** |
| * Block until a connection is established. |
| * <p>Returns a connected {@link BluetoothSocket} on successful connection. |
| * <p>Once this call returns, it can be called again to accept subsequent |
| * incoming connections. |
| * <p>{@link #close} can be used to abort this call from another thread. |
| * @return a connected {@link BluetoothSocket} |
| * @throws IOException on error, for example this call was aborted, or |
| * timeout |
| */ |
| public BluetoothSocket accept() throws IOException { |
| return accept(-1); |
| } |
| |
| /** |
| * Block until a connection is established, with timeout. |
| * <p>Returns a connected {@link BluetoothSocket} on successful connection. |
| * <p>Once this call returns, it can be called again to accept subsequent |
| * incoming connections. |
| * <p>{@link #close} can be used to abort this call from another thread. |
| * @return a connected {@link BluetoothSocket} |
| * @throws IOException on error, for example this call was aborted, or |
| * timeout |
| */ |
| public BluetoothSocket accept(int timeout) throws IOException { |
| return mSocket.accept(timeout); |
| } |
| |
| /** |
| * Immediately close this socket, and release all associated resources. |
| * <p>Causes blocked calls on this socket in other threads to immediately |
| * throw an IOException. |
| */ |
| public void close() throws IOException { |
| synchronized (this) { |
| if (mHandler != null) { |
| mHandler.obtainMessage(mMessage).sendToTarget(); |
| } |
| } |
| mSocket.close(); |
| } |
| |
| /*package*/ synchronized void setCloseHandler(Handler handler, int message) { |
| mHandler = handler; |
| mMessage = message; |
| } |
| } |