BluetoothServerSocket接受失败，并抛出IOException [英] BluetoothServerSocket accept fails and throws an IOException
问题描述
我有一个支持OBEX对象推送模式的设备，此配置文件是基于串行端口配置文件。我的猜测是，我可以使用Android的蓝牙聊天例如该设备连接到我的Android手机。不过，我遇到了一个问题，对于在Android SDK中的 socket.accept（）功能。我试图完成与此装置像这样连我的电话：
适配器= BluetoothAdapter.getDefaultAdapter（）;
设备= adapter.getRemoteDevice（00：1B：DC：0F：EC：7E）;
AcceptThread =新AcceptThread（真，适配器，设备）;
AcceptThread.start（）;
在AcceptThread构造函数是codeD这样的：
公共AcceptThread（布尔安全，BluetoothAdapter适配器，BluetoothDevice类设备）{
BluetoothServerSocket TMP = NULL;
this.adapter =适配器;
this.device =设备;
//创建一个新的监听服务器套接字
尝试 {
TMP = adapter.listenUsingInsecureRfcommWithServiceRecord（device.getName（），UUID.fromString（00001101-0000-1000-8000-00805F9B34FB））;
}赶上（例外五）{
Log.e（TAG，.AcceptThread＃听（）失败，E）;
}
mmServerSocket = TMP;
}
现在的问题是，当我尝试做一个连接（）前面说过
公共无效的run（）{
的BluetoothSocket插座= NULL;
//监听到服务器套接字，如果我们没有连接
而（mState！= STATE_CONNECTED）{
尝试 {
//这是一个阻塞调用，只会返回一个
//连接成功或异常
Log.d（TAG，AcceptThread.run：接受服务器套接字连接）;
插座= mmServerSocket.accept（20000）;
Log.d（TAG，.AcceptThread.run＃服务器套接字连接接受）;
}赶上（例外五）{
Log.e（TAG，.RUN＃accept（）方法失败：+ E）;
打破;
}
}
}
正如你所看到的ServerSocket接受 20秒每进来的连接或 20000毫秒。当时间后，应用程序将抛出IOException这样
十月7号至11号：30：08.355：E / SIMPLECONNECT（1301）：.RUN＃accept（）方法失败：java.io.IOException异常：连接超时
它告诉我，我的设备不可能连接到我的Android手机。可是没有显示器上的连接按钮设备，只需发送functionalitywhich将文件发送到我的手机。我相信这个传送功能也做了连接在后台，但我不知道。
任何人都可以找出任何解决方案给我吗？我上运行我的应用程序一个三星Galaxy SIII 与安卓4.0.4
我终于解决了，问题是，不同的Android版本和不同的设备seemes需要不同的插座。我tryed它与三星Galaxy XCOVER，TAB1，TAB2，Nexus的，请注意，摩托罗拉Defy和HTC Flyer的。 我使用的套接字是：
答：
方法M = mmDevice.getClass（）实现getMethod（createRfcommSocket，新的等级[] {} int.class）。
mSocket =（的BluetoothSocket）m.invoke（mmDevice，Integer.valueOf（1））;
B：
方法M = mmDevice.getClass（）实现getMethod（createInsecureRfcommSocket，新的等级[] {} int.class）。
mSocket =（的BluetoothSocket）m.invoke（mmDevice，Integer.valueOf（1））;
C：
<$p$p><$c$c>mSocket=BluetoothAdapter.getDefaultAdapter().getRemoteDevice(mmDevice.getAddress()).createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
的Android 4.0.x的作品的Nexus，传单，TAB1有A，B 为TAB2的Android 4.0.3工程为B 安卓3,6中，x作品DEFY有A，B 对于XCOVER的Android 2.3.6工程用C
我无法找到一个解决方案女巫适用于所有的设备和I，M没能找到女巫插座将工作之前，我创建和使用的插座，尤其是XCOVER执行的connect（）为所有插座未抛出异常，但赶上，如果我尝试TRO的write（）。所以，如果你想建立一个bloothoh连接至极的作品，你必须创建插座，连接一个写和所有设备，然后将的记住插座至极的作品（如preferences）
I have a device which supports the OBEX Object Push Profile, this profile is based upon the Serial Port Profile. My guess is that I can use the Android Bluetooth Chat example for connecting this device to my Android Phone. But I ran into a problem, regarding the socket.accept() functionality in the android SDK. I try to accomplish to connect my phone with this device like this:
adapter = BluetoothAdapter.getDefaultAdapter();
device = adapter.getRemoteDevice("00:1B:DC:0F:EC:7E");
AcceptThread = new AcceptThread(true, adapter, device);
AcceptThread.start();
The constructor in AcceptThread is coded like this:
public AcceptThread(boolean secure, BluetoothAdapter adapter, BluetoothDevice device) {
BluetoothServerSocket tmp = null;
this.adapter = adapter;
this.device = device;
// Create a new listening server socket
try {
tmp = adapter.listenUsingInsecureRfcommWithServiceRecord(device.getName(), UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
} catch (Exception e) {
Log.e(TAG, ".AcceptThread # listen() failed", e);
}
mmServerSocket = tmp;
}
The problem is when I try to do a connect() as I said before
public void run() {
BluetoothSocket socket = null;
// Listen to the server socket if we're not connected
while (mState != STATE_CONNECTED) {
try {
// This is a blocking call and will only return on a
// successful connection or an exception
Log.d(TAG, "AcceptThread.run: accepting server socket connection");
socket = mmServerSocket.accept(20000);
Log.d(TAG, ".AcceptThread.run # server socket connection accepted");
} catch (Exception e) {
Log.e(TAG, ".run # accept() failed: "+e);
break;
}
}
}
As you can see the ServerSocket accept every incomming connection for 20 seconds or 20000 ms. When the time is up, the app will throw an IOException like this
07-11 10:30:08.355: E/SIMPLECONNECT(1301): .run # accept() failed: java.io.IOException: Connection timed out
which tells me that my device couldnt connect to my android phone. The device doesnt have a connect button on the display, just a send functionalitywhich will send a file to my phone. I believe that this send functionality also do a connect in the background, but I am not sure.
Can anybody pinpoint any solutions for me? I am running my app on a Samsung Galaxy SIII with Android 4.0.4
I finally solved it, the problem is that different Android Versions and different devices seemes to need different sockets. I tryed it with Samsung Galaxy XCOVER, Tab1, Tab2, Nexus, Note, Motorola Defy and HTC Flyer. The Sockets I used are:
A:
Method m = mmDevice.getClass().getMethod("createRfcommSocket", new Class[] { int.class });
mSocket = (BluetoothSocket) m.invoke(mmDevice, Integer.valueOf(1));
B:
Method m = mmDevice.getClass().getMethod("createInsecureRfcommSocket", new Class[]{int.class});
mSocket=(BluetoothSocket)m.invoke(mmDevice,Integer.valueOf(1));
C:
mSocket=BluetoothAdapter.getDefaultAdapter().getRemoteDevice(mmDevice.getAddress()).createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
Android 4.0.x works for Nexus, Flyer,Tab1 with A,B Android 4.0.3 works for Tab2 with B Android 3,6,x works for DEFY with A,B Android 2.3.6 works for XCOVER with C
I can't find a solution witch works for all devices and I;m not able to find out witch socket will work before I create and use the Socket, especially the XCOVER perform the connect() for all Sockets without throwing an exception, but catch if i try tro write(). So if you want to setup a bloothoh connection wich works for all devices you have to create the sockets, connect an write and then remeber the socket wich works (e.g. in preferences)
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