Send EndOfStream message at the end of the stream

ch.psi.fda.fdaq/src/main/java/ch/psi/fda/fdaq/FdaqService.java

@@ -32,6 +32,7 @@ import java.util.logging.Logger;
 import com.google.common.eventbus.EventBus;
 
 import ch.psi.fda.messages.DataMessage;
+import ch.psi.fda.messages.EndOfStreamMessage;
 import ch.psi.fda.messages.Metadata;
 
 /**
@@ -128,15 +129,15 @@ public class FdaqService {
 				bus.post(message);
 			}
 
-			out.close();
-			in.close();
-			echoSocket.close();
 		} catch (IOException e) {
 			// Ignore potential exceptions if stop was triggered before all messages were retrieved
 			if (!stopAcquisition) { 
 				throw new RuntimeException(e);
 			}
 		} finally {
+			
+			bus.post(new EndOfStreamMessage());
+			
 			try {
 				out.close();
 				in.close();