java - Unblocked read from InputStream of a BlueToothSocket while checking connection of the socket -

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i trying write thread following stuffs:

1. read inputstream;

2. other routine;

3. if socket closed, throw exception.

the bluetooth socket , inputstream socket has been set before this. code following:

public void run() {     byte[] buffer = new byte[1024];     int bytes;      while (true) {         try {             //if(minputstream.available() > 0){        //-------- line 1             bytes = minputstream.read(buffer);             //}                                      //-------- line 2              //---------------------//             // other routines //             //---------------------//          } catch (ioexception e) {             connectionlost();             break;         }                    } }

the problem above code hang @ minputstream.read() because of blocking. however, if uncomment line 1 , line 2, minputstream.available() function not throw exception if bluetoothsocket closed. there method either unblock read function, or throw exception when available() used , bluetooth socket closed? appreciate it!

this use:

private boolean receivedintimelymanner(inputstream minstream,         int bytestoreceive, long timeoutmillis) throws ioexception,         interruptedexception {      long time = 0;     while (minstream.available() < bytestoreceive && time < timeoutmillis) {          time+=5;         thread.sleep(5);     }     if (time == timeoutmillis) {         return false;     }     return true;  }

surround read block like:

if receivedintimelymanner(instream,bytes,timeout){     read() }

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