java - Android Bluetooth sending file problem -

i writing small program send file between android , pc through bluetooth. read bluetooth chat example in google android site.

currently, version works sending text message via bluetooth, when send files, around >= 20 kb, stops working , throwing eofexception below:

java.io.eofexception @ java.io.objectinputstream$blockdatainputstream.readfully(objectinputstream.java:2716)     @ java.io.objectinputstream.readarray(objectinputstream.java:1665)     @ java.io.objectinputstream.readobject0(objectinputstream.java:1340)     @ java.io.objectinputstream.defaultreadfields(objectinputstream.java:1963)     @ java.io.objectinputstream.readserialdata(objectinputstream.java:1887)     @ java.io.objectinputstream.readordinaryobject(objectinputstream.java:1770)     @ java.io.objectinputstream.readobject0(objectinputstream.java:1346)     @ java.io.objectinputstream.readobject(objectinputstream.java:368)     @ com.test.pcserver.bluetoothserverlistener.run(bluetoothserverlistener.java:74)     @ java.lang.thread.run(thread.java:636) 

currently, java program on pc using bluecove-2.1.0

here main codes:

in android:

// bluetoothdevice object if (bluetoothadapter.checkbluetoothaddress(address)) {     device = mbtadapter.getremotedevice(address);          // bluetoothsocket connection     // given bluetoothdevice     socket = device .createrfcommsockettoservicerecord(programconstants.bluetooth_uuid);     socket.connect();          out = new objectoutputstream(socket.getoutputstream());      // send pc     out.writeobject(contentobject);     out.flush();         } 

in pc, read it:

pc version, server

streamconnectionnotifier streamconnnotifier = null;  // create service url string connectionstring = "btspp://localhost:" + programconstants.bluetooth_uuid.tostring()                     + ";name=myappname"; // open server url streamconnnotifier = (streamconnectionnotifier) connector.open(connectionstring);  while (true) {   // wait client connection   streamconnection connection = streamconnnotifier.acceptandopen();   objectinputstream in = new objectinputstream(connection.openinputstream());   remotedevice dev = remotedevice.getremotedevice(connection);    // read string spp client   dataincontroller data = new dataincontroller(model);   data.processdatain(in.readobject(), dev.getbluetoothaddress());    } 

you need add after flushing outputstream

out.close(); 

otherwise stream can become corrupted.