BluetoothOppRfcommListener.java revision 31ba132491053bc86d419a7d51fc04af3299c076
1/* 2 * Copyright (c) 2008-2009, Motorola, Inc. 3 * 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * - Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * - Redistributions in binary form must reproduce the above copyright notice, 13 * this list of conditions and the following disclaimer in the documentation 14 * and/or other materials provided with the distribution. 15 * 16 * - Neither the name of the Motorola, Inc. nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33package com.android.bluetooth.opp; 34 35import java.io.IOException; 36import java.net.ServerSocket; 37import java.net.Socket; 38 39import android.bluetooth.BluetoothAdapter; 40import android.bluetooth.BluetoothServerSocket; 41import android.bluetooth.BluetoothSocket; 42import android.bluetooth.BluetoothUuid; 43import android.os.Handler; 44import android.os.Message; 45import android.util.Log; 46 47/** 48 * This class listens on OPUSH channel for incoming connection 49 */ 50public class BluetoothOppRfcommListener { 51 private static final String TAG = "BtOppRfcommListener"; 52 53 private static final boolean V = Constants.VERBOSE; 54 55 public static final int MSG_INCOMING_BTOPP_CONNECTION = 100; 56 private static final int JOIN_TIMEOUT_MS=2000; 57 58 private volatile boolean mInterrupted; 59 private volatile boolean mFinish; 60 61 private Thread mSocketAcceptThread; 62 63 private Handler mCallback; 64 65 private static final int CREATE_RETRY_TIME = 10; 66 67 private final BluetoothAdapter mAdapter; 68 69 private BluetoothServerSocket mBtServerSocket = null; 70 71 private ServerSocket mTcpServerSocket = null; 72 73 public BluetoothOppRfcommListener(BluetoothAdapter adapter) { 74 mAdapter = adapter; 75 } 76 77 78 public synchronized boolean start(Handler callback) { 79 if (mSocketAcceptThread == null) { 80 mCallback = callback; 81 82 mSocketAcceptThread = new Thread(TAG) { 83 84 public void run() { 85 if (Constants.USE_TCP_DEBUG) { 86 try { 87 if (V) Log.v(TAG, "Create TCP ServerSocket"); 88 mTcpServerSocket = new ServerSocket(Constants.TCP_DEBUG_PORT, 1); 89 } catch (IOException e) { 90 Log.e(TAG, "Error listing on port" + Constants.TCP_DEBUG_PORT); 91 mInterrupted = true; 92 } 93 while (!mInterrupted) { 94 try { 95 Socket clientSocket = mTcpServerSocket.accept(); 96 97 if (V) Log.v(TAG, "Socket connected!"); 98 TestTcpTransport transport = new TestTcpTransport(clientSocket); 99 Message msg = Message.obtain(); 100 msg.setTarget(mCallback); 101 msg.what = MSG_INCOMING_BTOPP_CONNECTION; 102 msg.obj = transport; 103 msg.sendToTarget(); 104 105 } catch (IOException e) { 106 Log.e(TAG, "Error accept connection " + e); 107 } 108 } 109 if (V) Log.v(TAG, "TCP listen thread finished"); 110 } else { 111 boolean serverOK = true; 112 113 /* 114 * it's possible that create will fail in some cases. 115 * retry for 10 times 116 */ 117 for (int i = 0; i < CREATE_RETRY_TIME && !mInterrupted; i++) { 118 try { 119 if (V) Log.v(TAG, "Starting RFCOMM listener...."); 120 mBtServerSocket = mAdapter.listenUsingInsecureRfcommWithServiceRecord("OBEX Object Push", BluetoothUuid.ObexObjectPush.getUuid()); 121 if (V) Log.v(TAG, "Started RFCOMM listener...."); 122 } catch (IOException e1) { 123 Log.e(TAG, "Error create RfcommServerSocket " + e1); 124 serverOK = false; 125 } 126 if (!serverOK) { 127 synchronized (this) { 128 try { 129 if (V) Log.v(TAG, "Wait 3 seconds"); 130 Thread.sleep(3000); 131 } catch (InterruptedException e) { 132 Log.e(TAG, "socketAcceptThread thread was interrupted (3)"); 133 mInterrupted = true; 134 } 135 } 136 } else { 137 break; 138 } 139 } 140 if (!serverOK) { 141 Log.e(TAG, "Error start listening after " + CREATE_RETRY_TIME + " try"); 142 mInterrupted = true; 143 } 144 if (!mInterrupted) { 145 Log.i(TAG, "Accept thread started."); 146 } 147 BluetoothSocket clientSocket; 148 while (!mInterrupted) { 149 try { 150 if (V) Log.v(TAG, "Accepting connection..."); 151 if (mBtServerSocket == null) { 152 153 } 154 BluetoothServerSocket sSocket = mBtServerSocket; 155 if (sSocket ==null) { 156 mInterrupted = true; 157 158 } else { 159 clientSocket = mBtServerSocket.accept(); 160 if (V) Log.v(TAG, "Accepted connection from " 161 + clientSocket.getRemoteDevice()); 162 BluetoothOppRfcommTransport transport = new BluetoothOppRfcommTransport( 163 clientSocket); 164 Message msg = Message.obtain(); 165 msg.setTarget(mCallback); 166 msg.what = MSG_INCOMING_BTOPP_CONNECTION; 167 msg.obj = transport; 168 msg.sendToTarget(); 169 } 170 } catch (IOException e) { 171 Log.e(TAG, "Error accept connection " + e); 172 } 173 } 174 Log.i(TAG, "BluetoothSocket listen thread finished"); 175 } 176 } 177 }; 178 mInterrupted = false; 179 if(!Constants.USE_TCP_SIMPLE_SERVER) { 180 mSocketAcceptThread.start(); 181 } 182 } 183 return true; 184 } 185 186 public synchronized void stop() { 187 if (mSocketAcceptThread != null) { 188 Log.i(TAG, "stopping Accept Thread"); 189 190 mInterrupted = true; 191 if (Constants.USE_TCP_DEBUG) { 192 if (V) Log.v(TAG, "close mTcpServerSocket"); 193 if (mTcpServerSocket != null) { 194 try { 195 mTcpServerSocket.close(); 196 mTcpServerSocket = null; 197 } catch (IOException e) { 198 Log.e(TAG, "Error close mTcpServerSocket"); 199 } 200 } 201 } else { 202 if (V) Log.v(TAG, "close mBtServerSocket"); 203 204 if (mBtServerSocket != null) { 205 try { 206 mBtServerSocket.close(); 207 mBtServerSocket = null; 208 } catch (IOException e) { 209 Log.e(TAG, "Error close mBtServerSocket"); 210 } 211 } 212 } 213 try { 214 mSocketAcceptThread.interrupt(); 215 if (V) Log.v(TAG, "waiting for thread to terminate"); 216 mSocketAcceptThread.join(JOIN_TIMEOUT_MS); 217 if (V) Log.v(TAG, "done waiting for thread to terminate"); 218 mSocketAcceptThread = null; 219 mCallback = null; 220 } catch (InterruptedException e) { 221 if (V) Log.v(TAG, "Interrupted waiting for Accept Thread to join"); 222 } 223 } 224 } 225} 226