/*
* Copyright (c) 2008-2009, Motorola, Inc.
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the Motorola, Inc. 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.
*/
package com.android.bluetooth.opp;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
/**
* This class listens on OPUSH channel for incoming connection
*/
public class BluetoothOppRfcommListener {
private static final String TAG = "BtOppRfcommListener";
private static final boolean V = Constants.VERBOSE;
public static final int MSG_INCOMING_BTOPP_CONNECTION = 100;
private volatile boolean mInterrupted;
private Thread mSocketAcceptThread;
private Handler mCallback;
private static final int CREATE_RETRY_TIME = 10;
private static final int DEFAULT_OPP_CHANNEL = 12;
private final int mBtOppRfcommChannel;
private final BluetoothAdapter mAdapter;
private BluetoothServerSocket mBtServerSocket = null;
private ServerSocket mTcpServerSocket = null;
public BluetoothOppRfcommListener(BluetoothAdapter adapter) {
this(adapter, DEFAULT_OPP_CHANNEL);
}
public BluetoothOppRfcommListener(BluetoothAdapter adapter, int channel) {
mBtOppRfcommChannel = channel;
mAdapter = adapter;
}
public synchronized boolean start(Handler callback) {
if (mSocketAcceptThread == null) {
mCallback = callback;
mSocketAcceptThread = new Thread(TAG) {
public void run() {
if (Constants.USE_TCP_DEBUG) {
try {
if (V) Log.v(TAG, "Create TCP ServerSocket");
mTcpServerSocket = new ServerSocket(Constants.TCP_DEBUG_PORT, 1);
} catch (IOException e) {
Log.e(TAG, "Error listing on port" + Constants.TCP_DEBUG_PORT);
mInterrupted = true;
}
while (!mInterrupted) {
try {
Socket clientSocket = mTcpServerSocket.accept();
if (V) Log.v(TAG, "Socket connected!");
TestTcpTransport transport = new TestTcpTransport(clientSocket);
Message msg = Message.obtain();
msg.setTarget(mCallback);
msg.what = MSG_INCOMING_BTOPP_CONNECTION;
msg.obj = transport;
msg.sendToTarget();
} catch (IOException e) {
Log.e(TAG, "Error accept connection " + e);
}
}
if (V) Log.v(TAG, "TCP listen thread finished");
} else {
boolean serverOK = true;
/*
* it's possible that create will fail in some cases.
* retry for 10 times
*/
for (int i = 0; i < CREATE_RETRY_TIME && !mInterrupted; i++) {
try {
mBtServerSocket = mAdapter
.listenUsingInsecureRfcommOn(mBtOppRfcommChannel);
} catch (IOException e1) {
Log.e(TAG, "Error create RfcommServerSocket " + e1);
serverOK = false;
}
if (!serverOK) {
synchronized (this) {
try {
if (V) Log.v(TAG, "wait 3 seconds");
Thread.sleep(3000);
} catch (InterruptedException e) {
Log.e(TAG, "socketAcceptThread thread was interrupted (3)");
mInterrupted = true;
}
}
} else {
break;
}
}
if (!serverOK) {
Log.e(TAG, "Error start listening after " + CREATE_RETRY_TIME + " try");
mInterrupted = true;
}
if (!mInterrupted) {
Log.i(TAG, "Accept thread started on channel " + mBtOppRfcommChannel);
}
BluetoothSocket clientSocket;
while (!mInterrupted) {
try {
clientSocket = mBtServerSocket.accept();
Log.i(TAG, "Accepted connectoin from "
+ clientSocket.getRemoteDevice());
BluetoothOppRfcommTransport transport = new BluetoothOppRfcommTransport(
clientSocket);
Message msg = Message.obtain();
msg.setTarget(mCallback);
msg.what = MSG_INCOMING_BTOPP_CONNECTION;
msg.obj = transport;
msg.sendToTarget();
} catch (IOException e) {
Log.e(TAG, "Error accept connection " + e);
}
}
Log.i(TAG, "BluetoothSocket listen thread finished");
}
}
};
mInterrupted = false;
if(!Constants.USE_TCP_SIMPLE_SERVER) {
mSocketAcceptThread.start();
}
}
return true;
}
public synchronized void stop() {
if (mSocketAcceptThread != null) {
Log.i(TAG, "stopping Accept Thread");
mInterrupted = true;
if (Constants.USE_TCP_DEBUG) {
if (V) Log.v(TAG, "close mTcpServerSocket");
if (mTcpServerSocket != null) {
try {
mTcpServerSocket.close();
} catch (IOException e) {
Log.e(TAG, "Error close mTcpServerSocket");
}
}
} else {
if (V) Log.v(TAG, "close mBtServerSocket");
if (mBtServerSocket != null) {
try {
mBtServerSocket.close();
} catch (IOException e) {
Log.e(TAG, "Error close mBtServerSocket");
}
}
}
try {
mSocketAcceptThread.interrupt();
if (V) Log.v(TAG, "waiting for thread to terminate");
mSocketAcceptThread.join();
mSocketAcceptThread = null;
mCallback = null;
} catch (InterruptedException e) {
if (V) Log.v(TAG, "Interrupted waiting for Accept Thread to join");
}
}
}
}