handle end of stream correctly

ch.psi.fda/src/main/java/ch/psi/fda/RemoteAcquisitionMain.java

@@ -53,12 +53,14 @@ import org.apache.commons.cli.ParseException;
 
 import com.google.common.eventbus.AsyncEventBus;
 import com.google.common.eventbus.EventBus;
+import com.google.common.eventbus.Subscribe;
 
 import sun.misc.Signal;
 import sun.misc.SignalHandler;
 import ch.psi.fda.edescriptor.EDescriptor;
 import ch.psi.fda.gui.ProgressPanel;
 import ch.psi.fda.gui.ScrollableFlowPanel;
+import ch.psi.fda.messages.EndOfStreamMessage;
 import ch.psi.fda.ui.visualizer.Visualizer;
 import ch.psi.fda.vdescriptor.VDescriptor;
 
@@ -86,6 +88,7 @@ public class RemoteAcquisitionMain {
 		List<File> files = new ArrayList<>();
 
 		OptionBuilder.hasArg();
+		OptionBuilder.isRequired();
 		OptionBuilder.withArgName("hostname");
 		OptionBuilder.withDescription("Hostname server");
 		OptionBuilder.withType(new String());
@@ -210,6 +213,13 @@ public class RemoteAcquisitionMain {
 
 				}
 			});
+			
+			b.register(new Object(){
+				@Subscribe
+				public void onMessage(EndOfStreamMessage m){
+					progressPanel.done();
+				}
+			});
 
 			JSplitPane splitPane = new JSplitPane();
 			splitPane.setLeftComponent(progressPanel);