DTN sending fix

dtn_fix.java

final AutoCloseInputStream stream = new AutoCloseInputStream(pData);

try {
	final FileChannel channel = stream.getChannel();
	final MappedByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());
	session.send(SERVER_EID, 100,
		Charset.defaultCharset().decode(buf).toString());
}
finally {
	stream.close();
}