Merge change Ia4879943 into eclair

* changes:
  Encourage developers to connect RFCOMM by UUID instead of Channel.

8 files changed, 376 insertions, 67 deletions

diff --git a/core/java/android/bluetooth/BluetoothAdapter.java b/core/java/android/bluetooth/BluetoothAdapter.java
index c6a0619..8ce911d 100644
--- a/core/java/android/bluetooth/BluetoothAdapter.java
+++ b/core/java/android/bluetooth/BluetoothAdapter.java
@@ -31,6 +31,7 @@ import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.Random;
 import java.util.Set;
+import java.util.UUID;
 
 /**
  * Represents the local Bluetooth adapter.
@@ -564,8 +565,16 @@ public final class BluetoothAdapter {
     }
 
     /**
-     * Randomly picks RFCOMM channels until none are left.
+     * Picks RFCOMM channels until none are left.
      * Avoids reserved channels.
+     * Ideally we would pick random channels, but in the current implementation
+     * we start with the channel that is the hash of the UUID, and try every
+     * available channel from there. This means that in most cases a given
+     * uuid will use the same channel. This is a workaround for a Bluez SDP
+     * bug where we are not updating the cache when the channel changes for a
+     * uuid.
+     * TODO: Fix the Bluez SDP caching bug, and go back to random channel
+     * selection
      */
     private static class RfcommChannelPicker {
         private static final int[] RESERVED_RFCOMM_CHANNELS =  new int[] {
@@ -579,7 +588,9 @@ public final class BluetoothAdapter {
 
         private final LinkedList<Integer> mChannels;  // local list of channels left to try
 
-        public RfcommChannelPicker() {
+        private final UUID mUuid;
+
+        public RfcommChannelPicker(UUID uuid) {
             synchronized (RfcommChannelPicker.class) {
                 if (sChannels == null) {
                     // lazy initialization of non-reserved rfcomm channels
@@ -594,13 +605,21 @@ public final class BluetoothAdapter {
                 }
                 mChannels = (LinkedList<Integer>)sChannels.clone();
             }
+            mUuid = uuid;
         }
-        /* Returns next random channel, or -1 if we're out */
+        /* Returns next channel, or -1 if we're out */
         public int nextChannel() {
-            if (mChannels.size() == 0) {
-                return -1;
+            int channel = mUuid.hashCode();  // always pick the same channel to try first
+            Integer channelInt;
+            while (mChannels.size() > 0) {
+                channelInt = new Integer(channel);
+                if (mChannels.remove(channelInt)) {
+                    return channel;
+                }
+                channel = (channel % BluetoothSocket.MAX_RFCOMM_CHANNEL) + 1;
             }
-            return mChannels.remove(sRandom.nextInt(mChannels.size()));
+
+            return -1;
         }
     }
 
@@ -644,6 +663,8 @@ public final class BluetoothAdapter {
      * can use the same UUID to query our SDP server and discover which channel
      * to connect to. This SDP record will be removed when this socket is
      * closed, or if this application closes unexpectedly.
+     * <p>Use {@link BluetoothDevice#createRfcommSocketToServiceRecord} to
+     * connect to this socket from another device using the same {@link UUID}.
      * <p>Requires {@link android.Manifest.permission#BLUETOOTH}
      * @param name service name for SDP record
      * @param uuid uuid for SDP record
@@ -651,9 +672,9 @@ public final class BluetoothAdapter {
      * @throws IOException on error, for example Bluetooth not available, or
      *                     insufficient permissions, or channel in use.
      */
-    public BluetoothServerSocket listenUsingRfcomm(String name, ParcelUuid uuid)
+    public BluetoothServerSocket listenUsingRfcommWithServiceRecord(String name, UUID uuid)
             throws IOException {
-        RfcommChannelPicker picker = new RfcommChannelPicker();
+        RfcommChannelPicker picker = new RfcommChannelPicker(uuid);
 
         BluetoothServerSocket socket;
         int channel;
@@ -687,7 +708,8 @@ public final class BluetoothAdapter {
 
         int handle = -1;
         try {
-            handle = mService.addRfcommServiceRecord(name, uuid, channel, new Binder());
+            handle = mService.addRfcommServiceRecord(name, new ParcelUuid(uuid), channel,
+                    new Binder());
         } catch (RemoteException e) {Log.e(TAG, "", e);}
         if (handle == -1) {
             try {
diff --git a/core/java/android/bluetooth/BluetoothDevice.java b/core/java/android/bluetooth/BluetoothDevice.java
index d5393ed..ce975c2 100644
--- a/core/java/android/bluetooth/BluetoothDevice.java
+++ b/core/java/android/bluetooth/BluetoothDevice.java
@@ -316,21 +316,16 @@ public final class BluetoothDevice implements Parcelable {
      */
     public static final String EXTRA_UUID = "android.bluetooth.device.extra.UUID";
 
-
-    private static IBluetooth sService;  /* Guarenteed constant after first object constructed */
+    /**
+     * Lazy initialization. Guaranteed final after first object constructed, or
+     * getService() called.
+     * TODO: Unify implementation of sService amongst BluetoothFoo API's
+     */
+    private static IBluetooth sService;
 
     private final String mAddress;
 
-    /**
-     * Create a new BluetoothDevice
-     * Bluetooth MAC address must be upper case, such as "00:11:22:33:AA:BB",
-     * and is validated in this constructor.
-     * @param address valid Bluetooth MAC address
-     * @throws RuntimeException Bluetooth is not available on this platform
-     * @throws IllegalArgumentException address is invalid
-     * @hide
-     */
-    /*package*/ BluetoothDevice(String address) {
+    /*package*/ static IBluetooth getService() {
         synchronized (BluetoothDevice.class) {
             if (sService == null) {
                 IBinder b = ServiceManager.getService(Context.BLUETOOTH_SERVICE);
@@ -340,7 +335,20 @@ public final class BluetoothDevice implements Parcelable {
                 sService = IBluetooth.Stub.asInterface(b);
             }
         }
+        return sService;
+    }
 
+    /**
+     * Create a new BluetoothDevice
+     * Bluetooth MAC address must be upper case, such as "00:11:22:33:AA:BB",
+     * and is validated in this constructor.
+     * @param address valid Bluetooth MAC address
+     * @throws RuntimeException Bluetooth is not available on this platform
+     * @throws IllegalArgumentException address is invalid
+     * @hide
+     */
+    /*package*/ BluetoothDevice(String address) {
+        getService();  // ensures sService is initialized
         if (!BluetoothAdapter.checkBluetoothAddress(address)) {
             throw new IllegalArgumentException(address + " is not a valid Bluetooth address");
         }
@@ -551,7 +559,7 @@ public final class BluetoothDevice implements Parcelable {
       */
      public boolean fetchUuidsWithSdp() {
         try {
-            return sService.fetchRemoteUuidsWithSdp(mAddress);
+            return sService.fetchRemoteUuids(mAddress, null, null);
         } catch (RemoteException e) {Log.e(TAG, "", e);}
         return false;
     }
@@ -598,7 +606,7 @@ public final class BluetoothDevice implements Parcelable {
 
     /**
      * Create an RFCOMM {@link BluetoothSocket} ready to start a secure
-     * outgoing connection to this remote device.
+     * outgoing connection to this remote device on given channel.
      * <p>The remote device will be authenticated and communication on this
      * socket will be encrypted.
      * <p>Use {@link BluetoothSocket#connect} to intiate the outgoing
@@ -610,9 +618,34 @@ public final class BluetoothDevice implements Parcelable {
      * @return a RFCOMM BluetoothServerSocket ready for an outgoing connection
      * @throws IOException on error, for example Bluetooth not available, or
      *                     insufficient permissions
+     * @hide
      */
     public BluetoothSocket createRfcommSocket(int channel) throws IOException {
-        return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, true, true, this, channel);
+        return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, true, true, this, channel,
+                null);
+    }
+
+    /**
+     * Create an RFCOMM {@link BluetoothSocket} ready to start a secure
+     * outgoing connection to this remote device using SDP lookup of uuid.
+     * <p>This is designed to be used with {@link
+     * BluetoothAdapter#listenUsingRfcommWithServiceRecord} for peer-peer
+     * Bluetooth applications.
+     * <p>Use {@link BluetoothSocket#connect} to intiate the outgoing
+     * connection. This will also perform an SDP lookup of the given uuid to
+     * determine which channel to connect to.
+     * <p>The remote device will be authenticated and communication on this
+     * socket will be encrypted.
+     * <p>Requires {@link android.Manifest.permission#BLUETOOTH}
+     *
+     * @param uuid service record uuid to lookup RFCOMM channel
+     * @return a RFCOMM BluetoothServerSocket ready for an outgoing connection
+     * @throws IOException on error, for example Bluetooth not available, or
+     *                     insufficient permissions
+     */
+    public BluetoothSocket createRfcommSocketToServiceRecord(UUID uuid) throws IOException {
+        return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, true, true, this, -1,
+                new ParcelUuid(uuid));
     }
 
     /**
@@ -628,7 +661,8 @@ public final class BluetoothDevice implements Parcelable {
      * @hide
      */
     public BluetoothSocket createInsecureRfcommSocket(int port) throws IOException {
-        return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, false, false, this, port);
+        return new BluetoothSocket(BluetoothSocket.TYPE_RFCOMM, -1, false, false, this, port,
+                null);
     }
 
     /**
@@ -640,7 +674,7 @@ public final class BluetoothDevice implements Parcelable {
      * @hide
      */
     public BluetoothSocket createScoSocket() throws IOException {
-        return new BluetoothSocket(BluetoothSocket.TYPE_SCO, -1, true, true, this, -1);
+        return new BluetoothSocket(BluetoothSocket.TYPE_SCO, -1, true, true, this, -1, null);
     }
 
     /**
diff --git a/core/java/android/bluetooth/BluetoothServerSocket.java b/core/java/android/bluetooth/BluetoothServerSocket.java
index d126ea4..605bdc1 100644
--- a/core/java/android/bluetooth/BluetoothServerSocket.java
+++ b/core/java/android/bluetooth/BluetoothServerSocket.java
@@ -36,13 +36,13 @@ import java.io.IOException;
  * connection orientated, streaming transport over Bluetooth. It is also known
  * as the Serial Port Profile (SPP).
  *
- * <p>Use {@link BluetoothDevice#createRfcommSocket} to create a new {@link
- * BluetoothSocket} ready for an outgoing connection to a remote
+ * <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#listenUsingRfcomm} to create a listening
- * {@link BluetoothServerSocket} ready for incoming connections to the local
- * {@link BluetoothAdapter}.
+ * <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
@@ -68,7 +68,7 @@ public final class BluetoothServerSocket implements Closeable {
      */
     /*package*/ BluetoothServerSocket(int type, boolean auth, boolean encrypt, int port)
             throws IOException {
-        mSocket = new BluetoothSocket(type, -1, auth, encrypt, null, port);
+        mSocket = new BluetoothSocket(type, -1, auth, encrypt, null, port, null);
     }
 
     /**
diff --git a/core/java/android/bluetooth/BluetoothSocket.java b/core/java/android/bluetooth/BluetoothSocket.java
index b9e33f3..7e72590 100644
--- a/core/java/android/bluetooth/BluetoothSocket.java
+++ b/core/java/android/bluetooth/BluetoothSocket.java
@@ -16,11 +16,15 @@
 
 package android.bluetooth;
 
+import android.bluetooth.IBluetoothCallback;
+import android.os.ParcelUuid;
+import android.os.RemoteException;
+import android.util.Log;
+
 import java.io.Closeable;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
-
 import java.util.concurrent.locks.ReentrantReadWriteLock;
 
 /**
@@ -38,13 +42,13 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
  * connection orientated, streaming transport over Bluetooth. It is also known
  * as the Serial Port Profile (SPP).
  *
- * <p>Use {@link BluetoothDevice#createRfcommSocket} to create a new {@link
- * BluetoothSocket} ready for an outgoing connection to a remote
+ * <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#listenUsingRfcomm} to create a listening
- * {@link BluetoothServerSocket} ready for incoming connections to the local
- * {@link BluetoothAdapter}.
+ * <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
@@ -54,6 +58,8 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
  * {@link android.Manifest.permission#BLUETOOTH}
  */
 public final class BluetoothSocket implements Closeable {
+    private static final String TAG = "BluetoothSocket";
+
     /** @hide */
     public static final int MAX_RFCOMM_CHANNEL = 30;
 
@@ -66,13 +72,15 @@ public final class BluetoothSocket implements Closeable {
     /*package*/ static final int EADDRINUSE = 98;
 
     private final int mType;  /* one of TYPE_RFCOMM etc */
-    private final int mPort;  /* RFCOMM channel or L2CAP psm */
     private final BluetoothDevice mDevice;    /* remote device */
     private final String mAddress;    /* remote address */
     private final boolean mAuth;
     private final boolean mEncrypt;
     private final BluetoothInputStream mInputStream;
     private final BluetoothOutputStream mOutputStream;
+    private final SdpHelper mSdp;
+
+    private int mPort;  /* RFCOMM channel or L2CAP psm */
 
     /** prevents all native calls after destroyNative() */
     private boolean mClosed;
@@ -91,16 +99,24 @@ public final class BluetoothSocket implements Closeable {
      * @param encrypt require the connection to be encrypted
      * @param device  remote device that this socket can connect to
      * @param port    remote port
+     * @param uuid    SDP uuid
      * @throws IOException On error, for example Bluetooth not available, or
      *                     insufficient priveleges
      */
     /*package*/ BluetoothSocket(int type, int fd, boolean auth, boolean encrypt,
-            BluetoothDevice device, int port) throws IOException {
-        if (type == BluetoothSocket.TYPE_RFCOMM) {
+            BluetoothDevice device, int port, ParcelUuid uuid) throws IOException {
+        if (type == BluetoothSocket.TYPE_RFCOMM && uuid == null && fd == -1) {
             if (port < 1 || port > MAX_RFCOMM_CHANNEL) {
                 throw new IOException("Invalid RFCOMM channel: " + port);
             }
         }
+        if (uuid == null) {
+            mPort = port;
+            mSdp = null;
+        } else {
+            mSdp = new SdpHelper(device, uuid);
+            mPort = -1;
+        }
         mType = type;
         mAuth = auth;
         mEncrypt = encrypt;
@@ -110,7 +126,6 @@ public final class BluetoothSocket implements Closeable {
         } else {
             mAddress = device.getAddress();
         }
-        mPort = port;
         if (fd == -1) {
             initSocketNative();
         } else {
@@ -123,7 +138,7 @@ public final class BluetoothSocket implements Closeable {
     }
 
     /**
-     * Construct a BluetoothSocket from address.
+     * Construct a BluetoothSocket from address. Used by native code.
      * @param type    type of socket
      * @param fd      fd to use for connected socket, or -1 for a new socket
      * @param auth    require the remote device to be authenticated
@@ -135,7 +150,7 @@ public final class BluetoothSocket implements Closeable {
      */
     private BluetoothSocket(int type, int fd, boolean auth, boolean encrypt, String address,
             int port) throws IOException {
-        this(type, fd, auth, encrypt, new BluetoothDevice(address), port);
+        this(type, fd, auth, encrypt, new BluetoothDevice(address), port, null);
     }
 
     /** @hide */
@@ -160,7 +175,12 @@ public final class BluetoothSocket implements Closeable {
         mLock.readLock().lock();
         try {
             if (mClosed) throw new IOException("socket closed");
-            connectNative();
+
+            if (mSdp != null) {
+                mPort = mSdp.doSdp();  // blocks
+            }
+
+            connectNative();  // blocks
         } finally {
             mLock.readLock().unlock();
         }
@@ -176,12 +196,15 @@ public final class BluetoothSocket implements Closeable {
         mLock.readLock().lock();
         try {
             if (mClosed) return;
+            if (mSdp != null) {
+                mSdp.cancel();
+            }
             abortNative();
         } finally {
             mLock.readLock().unlock();
         }
 
-        // all native calls are guarenteed to immediately return after
+        // all native calls are guaranteed to immediately return after
         // abortNative(), so this lock should immediatley acquire
         mLock.writeLock().lock();
         try {
@@ -291,4 +314,62 @@ public final class BluetoothSocket implements Closeable {
      * use strerr to convert to string error.
      */
     /*package*/ native void throwErrnoNative(int errno) throws IOException;
+
+    /**
+     * Helper to perform blocking SDP lookup.
+     */
+    private static class SdpHelper extends IBluetoothCallback.Stub {
+        private final IBluetooth service;
+        private final ParcelUuid uuid;
+        private final BluetoothDevice device;
+        private int channel;
+        private boolean canceled;
+        public SdpHelper(BluetoothDevice device, ParcelUuid uuid) {
+            service = BluetoothDevice.getService();
+            this.device = device;
+            this.uuid = uuid;
+            canceled = false;
+        }
+        /**
+         * Returns the RFCOMM channel for the UUID, or throws IOException
+         * on failure.
+         */
+        public synchronized int doSdp() throws IOException {
+            if (canceled) throw new IOException("Service discovery canceled");
+            channel = -1;
+
+            boolean inProgress = false;
+            try {
+                inProgress = service.fetchRemoteUuids(device.getAddress(), uuid, this);
+            } catch (RemoteException e) {Log.e(TAG, "", e);}
+
+            if (!inProgress) throw new IOException("Unable to start Service Discovery");
+
+            try {
+                /* 12 second timeout as a precaution - onRfcommChannelFound
+                 * should always occur before the timeout */
+                wait(12000);   // block
+
+            } catch (InterruptedException e) {}
+
+            if (canceled) throw new IOException("Service discovery canceled");
+            if (channel < 1) throw new IOException("Service discovery failed");
+
+            return channel;
+        }
+        /** Object cannot be re-used after calling cancel() */
+        public synchronized void cancel() {
+            if (!canceled) {
+                canceled = true;
+                channel = -1;
+                notifyAll();  // unblock
+            }
+        }
+        public synchronized void onRfcommChannelFound(int channel) {
+            if (!canceled) {
+                this.channel = channel;
+                notifyAll();  // unblock
+            }
+        }
+    }
 }
diff --git a/core/java/android/bluetooth/IBluetooth.aidl b/core/java/android/bluetooth/IBluetooth.aidl
index e54abec..7e752af 100644
--- a/core/java/android/bluetooth/IBluetooth.aidl
+++ b/core/java/android/bluetooth/IBluetooth.aidl
@@ -16,6 +16,7 @@
 
 package android.bluetooth;
 
+import android.bluetooth.IBluetoothCallback;
 import android.os.ParcelUuid;
 
 /**
@@ -53,8 +54,8 @@ interface IBluetooth
     String getRemoteName(in String address);
     int getRemoteClass(in String address);
     ParcelUuid[] getRemoteUuids(in String address);
-    boolean fetchRemoteUuidsWithSdp(in String address);
-    int getRemoteServiceChannel(in String address,in ParcelUuid uuid);
+    boolean fetchRemoteUuids(in String address, in ParcelUuid uuid, in IBluetoothCallback callback);
+    int getRemoteServiceChannel(in String address, in ParcelUuid uuid);
 
     boolean setPin(in String address, in byte[] pin);
     boolean setPasskey(in String address, int passkey);
diff --git a/core/java/android/bluetooth/IBluetoothCallback.aidl b/core/java/android/bluetooth/IBluetoothCallback.aidl
new file mode 100644
index 0000000..8edb3f4
--- /dev/null
+++ b/core/java/android/bluetooth/IBluetoothCallback.aidl
@@ -0,0 +1,27 @@
+/*
+ * 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;
+
+/**
+ * System private API for Bluetooth service callbacks.
+ *
+ * {@hide}
+ */
+interface IBluetoothCallback
+{
+    void onRfcommChannelFound(int channel);
+}
diff --git a/core/java/android/server/BluetoothEventLoop.java b/core/java/android/server/BluetoothEventLoop.java
index 0152223..da1918a 100644
--- a/core/java/android/server/BluetoothEventLoop.java
+++ b/core/java/android/server/BluetoothEventLoop.java
@@ -55,6 +55,10 @@ class BluetoothEventLoop {
     private static final int EVENT_RESTART_BLUETOOTH = 2;
     private static final int EVENT_PAIRING_CONSENT_DELAYED_ACCEPT = 3;
 
+    private static final int CREATE_DEVICE_ALREADY_EXISTS = 1;
+    private static final int CREATE_DEVICE_SUCCESS = 0;
+    private static final int CREATE_DEVICE_FAILED = -1;
+
     // The time (in millisecs) to delay the pairing attempt after the first
     // auto pairing attempt fails. We use an exponential delay with
     // INIT_AUTO_PAIRING_FAILURE_ATTEMPT_DELAY as the initial value and
@@ -550,14 +554,27 @@ class BluetoothEventLoop {
             mBluetoothService.updateRemoteDevicePropertiesCache(address);
         }
         mBluetoothService.sendUuidIntent(address);
+        mBluetoothService.makeServiceChannelCallbacks(address);
     }
 
-    private void onCreateDeviceResult(String address, boolean result) {
-        if (DBG) {
-            log("Result of onCreateDeviceResult:" + result);
-        }
-        if (!result) {
+    private void onCreateDeviceResult(String address, int result) {
+        if (DBG) log("Result of onCreateDeviceResult:" + result);
+
+        switch (result) {
+        case CREATE_DEVICE_ALREADY_EXISTS:
+            String path = mBluetoothService.getObjectPathFromAddress(address);
+            if (path != null) {
+                mBluetoothService.discoverServicesNative(path, "");
+                break;
+            }
+            Log.w(TAG, "Device exists, but we dont have the bluez path, failing");
+            // fall-through
+        case CREATE_DEVICE_FAILED:
             mBluetoothService.sendUuidIntent(address);
+            mBluetoothService.makeServiceChannelCallbacks(address);
+            break;
+        case CREATE_DEVICE_SUCCESS:
+            // nothing to do, UUID intent's will be sent via property changed
         }
     }
 
diff --git a/core/java/android/server/BluetoothService.java b/core/java/android/server/BluetoothService.java
index 93133d7..3fdbb68 100644
--- a/core/java/android/server/BluetoothService.java
+++ b/core/java/android/server/BluetoothService.java
@@ -31,6 +31,7 @@ import android.bluetooth.BluetoothHeadset;
 import android.bluetooth.BluetoothSocket;
 import android.bluetooth.BluetoothUuid;
 import android.bluetooth.IBluetooth;
+import android.bluetooth.IBluetoothCallback;
 import android.os.ParcelUuid;
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
@@ -55,6 +56,7 @@ import java.io.UnsupportedEncodingException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.Map;
 
 public class BluetoothService extends IBluetooth.Stub {
@@ -86,14 +88,39 @@ public class BluetoothService extends IBluetooth.Stub {
     // This timeout should be greater than the page timeout
     private static final int UUID_INTENT_DELAY = 6000;
 
+    /** Always retrieve RFCOMM channel for these SDP UUIDs */
+    private static final ParcelUuid[] RFCOMM_UUIDS = {
+            BluetoothUuid.Handsfree,
+            BluetoothUuid.HSP,
+            BluetoothUuid.ObexObjectPush };
+
+
     private final Map<String, String> mAdapterProperties;
-    private final HashMap <String, Map<String, String>> mDeviceProperties;
+    private final HashMap<String, Map<String, String>> mDeviceProperties;
 
-    private final HashMap <String, Map<ParcelUuid, Integer>> mDeviceServiceChannelCache;
-    private final ArrayList <String> mUuidIntentTracker;
+    private final HashMap<String, Map<ParcelUuid, Integer>> mDeviceServiceChannelCache;
+    private final ArrayList<String> mUuidIntentTracker;
+    private final HashMap<RemoteService, IBluetoothCallback> mUuidCallbackTracker;
 
     private final HashMap<Integer, Integer> mServiceRecordToPid;
 
+    private static class RemoteService {
+        public String address;
+        public ParcelUuid uuid;
+        public RemoteService(String address, ParcelUuid uuid) {
+            this.address = address;
+            this.uuid = uuid;
+        }
+        @Override
+        public boolean equals(Object o) {
+            if (o instanceof RemoteService) {
+                RemoteService service = (RemoteService)o;
+                return address.equals(service.address) && uuid.equals(service.uuid);
+            }
+            return false;
+        }
+    }
+
     static {
         classInitNative();
     }
@@ -121,6 +148,7 @@ public class BluetoothService extends IBluetooth.Stub {
 
         mDeviceServiceChannelCache = new HashMap<String, Map<ParcelUuid, Integer>>();
         mUuidIntentTracker = new ArrayList<String>();
+        mUuidCallbackTracker = new HashMap<RemoteService, IBluetoothCallback>();
         mServiceRecordToPid = new HashMap<Integer, Integer>();
         registerForAirplaneMode();
     }
@@ -312,8 +340,10 @@ public class BluetoothService extends IBluetooth.Stub {
                 break;
             case MESSAGE_UUID_INTENT:
                 String address = (String)msg.obj;
-                if (address != null)
+                if (address != null) {
                     sendUuidIntent(address);
+                    makeServiceChannelCallbacks(address);
+                }
                 break;
             case MESSAGE_DISCOVERABLE_TIMEOUT:
                 int mode = msg.arg1;
@@ -1064,14 +1094,35 @@ public class BluetoothService extends IBluetooth.Stub {
         return uuids;
     }
 
-    public synchronized boolean fetchRemoteUuidsWithSdp(String address) {
+    /**
+     * Connect and fetch new UUID's using SDP.
+     * The UUID's found are broadcast as intents.
+     * Optionally takes a uuid and callback to fetch the RFCOMM channel for the
+     * a given uuid.
+     * TODO: Don't wait UUID_INTENT_DELAY to broadcast UUID intents on success
+     * TODO: Don't wait UUID_INTENT_DELAY to handle the failure case for
+     * callback and broadcast intents.
+     */
+    public synchronized boolean fetchRemoteUuids(String address, ParcelUuid uuid,
+            IBluetoothCallback callback) {
         mContext.enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
         if (!BluetoothAdapter.checkBluetoothAddress(address)) {
             return false;
         }
 
+        RemoteService service = new RemoteService(address, uuid);
+        if (uuid != null && mUuidCallbackTracker.get(service) != null) {
+            // An SDP query for this address & uuid is already in progress
+            // Do not add this callback for the uuid
+            return false;
+        }
+
         if (mUuidIntentTracker.contains(address)) {
             // An SDP query for this address is already in progress
+            // Add this uuid onto the in-progress SDP query
+            if (uuid != null) {
+                mUuidCallbackTracker.put(new RemoteService(address, uuid), callback);
+            }
             return true;
         }
 
@@ -1087,6 +1138,9 @@ public class BluetoothService extends IBluetooth.Stub {
         }
 
         mUuidIntentTracker.add(address);
+        if (uuid != null) {
+            mUuidCallbackTracker.put(new RemoteService(address, uuid), callback);
+        }
 
         Message message = mHandler.obtainMessage(MESSAGE_UUID_INTENT);
         message.obj = address;
@@ -1096,6 +1150,7 @@ public class BluetoothService extends IBluetooth.Stub {
 
     /**
      * Gets the rfcomm channel associated with the UUID.
+     * Pulls records from the cache only.
      *
      * @param address Address of the remote device
      * @param uuid ParcelUuid of the service attribute
@@ -1201,20 +1256,67 @@ public class BluetoothService extends IBluetooth.Stub {
         // We are storing the rfcomm channel numbers only for the uuids
         // we are interested in.
         int channel;
-        ParcelUuid[] interestedUuids = {BluetoothUuid.Handsfree,
-                                        BluetoothUuid.HSP,
-                                        BluetoothUuid.ObexObjectPush};
+        if (DBG) log("updateDeviceServiceChannelCache(" + address + ")");
+
+        ArrayList<ParcelUuid> applicationUuids = new ArrayList();
+
+        synchronized (this) {
+            for (RemoteService service : mUuidCallbackTracker.keySet()) {
+                if (service.address.equals(address)) {
+                    applicationUuids.add(service.uuid);
+                }
+            }
+        }
 
         Map <ParcelUuid, Integer> value = new HashMap<ParcelUuid, Integer>();
-        for (ParcelUuid uuid: interestedUuids) {
+
+        // Retrieve RFCOMM channel for default uuids
+        for (ParcelUuid uuid : RFCOMM_UUIDS) {
             if (BluetoothUuid.isUuidPresent(deviceUuids, uuid)) {
-                channel =
-                   getDeviceServiceChannelNative(getObjectPathFromAddress(address), uuid.toString(),
-                                                 0x0004);
+                channel = getDeviceServiceChannelNative(getObjectPathFromAddress(address),
+                        uuid.toString(), 0x0004);
+                if (DBG) log("\tuuid(system): " + uuid + " " + channel);
                 value.put(uuid, channel);
             }
         }
-        mDeviceServiceChannelCache.put(address, value);
+        // Retrieve RFCOMM channel for application requested uuids
+        for (ParcelUuid uuid : applicationUuids) {
+            if (BluetoothUuid.isUuidPresent(deviceUuids, uuid)) {
+                channel = getDeviceServiceChannelNative(getObjectPathFromAddress(address),
+                        uuid.toString(), 0x0004);
+                if (DBG) log("\tuuid(application): " + uuid + " " + channel);
+                value.put(uuid, channel);
+            }
+        }
+
+        synchronized (this) {
+            // Make application callbacks
+            for (Iterator<RemoteService> iter = mUuidCallbackTracker.keySet().iterator();
+                    iter.hasNext();) {
+                RemoteService service = iter.next();
+                if (service.address.equals(address)) {
+                    channel = -1;
+                    if (value.get(service.uuid) != null) {
+                        channel = value.get(service.uuid);
+                    }
+                    if (channel != -1) {
+                        if (DBG) log("Making callback for " + service.uuid + " with result " +
+                                channel);
+                        IBluetoothCallback callback = mUuidCallbackTracker.get(service);
+                        if (callback != null) {
+                            try {
+                                callback.onRfcommChannelFound(channel);
+                            } catch (RemoteException e) {Log.e(TAG, "", e);}
+                        }
+
+                        iter.remove();
+                    }
+                }
+            }
+
+            // Update cache
+            mDeviceServiceChannelCache.put(address, value);
+        }
     }
 
     /**
@@ -1330,6 +1432,26 @@ public class BluetoothService extends IBluetooth.Stub {
 
         if (mUuidIntentTracker.contains(address))
             mUuidIntentTracker.remove(address);
+
+    }
+
+    /*package*/ synchronized void makeServiceChannelCallbacks(String address) {
+        for (Iterator<RemoteService> iter = mUuidCallbackTracker.keySet().iterator();
+                iter.hasNext();) {
+            RemoteService service = iter.next();
+            if (service.address.equals(address)) {
+                if (DBG) log("Cleaning up failed UUID channel lookup: " + service.address +
+                        " " + service.uuid);
+                IBluetoothCallback callback = mUuidCallbackTracker.get(service);
+                if (callback != null) {
+                    try {
+                        callback.onRfcommChannelFound(-1);
+                    } catch (RemoteException e) {Log.e(TAG, "", e);}
+                }
+
+                iter.remove();
+            }
+        }
     }
 
     @Override
@@ -1377,6 +1499,11 @@ public class BluetoothService extends IBluetooth.Stub {
                     }
                 }
             }
+            for (RemoteService service : mUuidCallbackTracker.keySet()) {
+                if (service.address.equals(address)) {
+                    pw.println("\tPENDING CALLBACK: " + service.uuid);
+                }
+            }
         }
 
         String value = getProperty("Devices");
@@ -1508,7 +1635,7 @@ public class BluetoothService extends IBluetooth.Stub {
     private native boolean setDevicePropertyBooleanNative(String objectPath, String key,
             int value);
     private native boolean createDeviceNative(String address);
-    private native boolean discoverServicesNative(String objectPath, String pattern);
+    /*package*/ native boolean discoverServicesNative(String objectPath, String pattern);
 
     private native int addRfcommServiceRecordNative(String name, long uuidMsb, long uuidLsb,
             short channel);