diff --git a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java
index 559135a9f..ae9ab61f5 100644
--- a/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java
+++ b/demo-edit-es-module/src/main/java/org/sudu/experiments/esm/JsRemoteEditor.java
@@ -9,6 +9,7 @@
 import org.sudu.experiments.diff.JsViewController;
 import org.sudu.experiments.editor.*;
 import org.sudu.experiments.js.*;
+import org.sudu.experiments.protocol.JsCast;
 import org.teavm.jso.JSObject;
 import org.teavm.jso.core.JSString;
 
@@ -27,6 +28,24 @@ public JsRemoteEditor(
     editor = demoEdit0().editor();
     if (args.hasTheme()) setTheme(args.getTheme());
     controller = new JsEditorViewController0();
+    channel.setOnMessage(this::onMessage);
+    editor.setOnDiffMadeListener((_1, _2, _3) -> onEdit());
+  }
+
+  private void onMessage(JsArray<JSObject> jsArray) {
+    String source = JsCast.string(jsArray, 0);
+    String encoding = JsCast.string(jsArray, 1);
+    String name = JsCast.string(jsArray, 2);
+    editor.openFile(source, encoding, name);
+  }
+
+  private void onEdit() {
+    JSString source = JsCast.jsString(editor.model().document.makeString());
+    JSString encoding = JSString.valueOf(editor.model().encoding());
+    JsArray<JSObject> jsArray = JsArray.create();
+    jsArray.set(0, source);
+    jsArray.set(1, encoding);
+    channel.sendMessage(jsArray);
   }
 
   @Override
diff --git a/filediff-node-module/src/main/java/org/sudu/experiments/update/FileEditChannelUpdater.java b/filediff-node-module/src/main/java/org/sudu/experiments/update/FileEditChannelUpdater.java
index 6a84c5f34..9d3211655 100644
--- a/filediff-node-module/src/main/java/org/sudu/experiments/update/FileEditChannelUpdater.java
+++ b/filediff-node-module/src/main/java/org/sudu/experiments/update/FileEditChannelUpdater.java
@@ -6,6 +6,7 @@
 import org.sudu.experiments.encoding.JsTextFileReader;
 import org.sudu.experiments.js.JsArray;
 import org.sudu.experiments.js.JsHelper;
+import org.sudu.experiments.protocol.JsCast;
 import org.teavm.jso.JSObject;
 import org.teavm.jso.core.JSString;
 
@@ -17,6 +18,7 @@ public class FileEditChannelUpdater {
 
   public FileEditChannelUpdater(Channel channel) {
     this.channel = channel;
+    this.channel.setOnMessage(this::onMessage);
   }
 
   public void setFile(FileHandle fileHandle) {
@@ -24,6 +26,12 @@ public void setFile(FileHandle fileHandle) {
     JsTextFileReader.read(handle, this::sendMessage, this::onError);
   }
 
+  public void onMessage(JsArray<JSObject> jsArray) {
+    String source = JsCast.string(jsArray, 0);
+    String encoding = JsCast.string(jsArray, 1);
+    handle.writeText(source, encoding, () -> {}, this::onError);
+  }
+
   public void sendMessage(JSString source, JSString encoding) {
     if (debug) LoggingJs.debug(JsHelper.concat(
         "FileEditChannelUpdater.sendMessage, length = " + source.getLength()