diff --git a/app/src/main/java/org/sheedon/demo/MainActivity.java b/app/src/main/java/org/sheedon/demo/MainActivity.java
index 851a19d..bbb3a2b 100644
--- a/app/src/main/java/org/sheedon/demo/MainActivity.java
+++ b/app/src/main/java/org/sheedon/demo/MainActivity.java
@@ -37,8 +37,6 @@ protected void onCreate(Bundle savedInstanceState) {
                 .build();
 
 
-
-
         Call call = client.newCall(request);
         Observable observable = client.newObservable(request);
         observable.subscribe(new Callback<Response>() {
@@ -76,6 +74,11 @@ public void onResponse(Response response) {
 
     @Override
     public void onCallback(ResponseBody data) {
-        Log.v("SXD",data.toString());
+        Log.v("SXD", data.toString());
+    }
+
+    @Override
+    public void onRequest(String message) {
+        Log.v("SXD", message);
     }
 }
diff --git a/serial/build.gradle b/serial/build.gradle
index 945445b..7bd19ba 100644
--- a/serial/build.gradle
+++ b/serial/build.gradle
@@ -8,8 +8,8 @@ android {
     defaultConfig {
         minSdkVersion 15
         targetSdkVersion 28
-        versionCode 12
-        versionName "1.2.8"
+        versionCode 13
+        versionName "1.2.9"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles 'consumer-rules.pro'
diff --git a/serial/src/main/java/org/sheedon/serial/RealCall.java b/serial/src/main/java/org/sheedon/serial/RealCall.java
index 4914df8..f128c77 100644
--- a/serial/src/main/java/org/sheedon/serial/RealCall.java
+++ b/serial/src/main/java/org/sheedon/serial/RealCall.java
@@ -163,6 +163,7 @@ protected void execute() {
             }
 
             boolean isSuccess = serialClient.port.sendMessage(data);
+            serialClient.onRequest(data);
 
             if (!isSuccess) {
                 client.dispatcher().finishedByLocal(id(), new IllegalStateException("publish is failure"));
diff --git a/serial/src/main/java/org/sheedon/serial/SerialClient.java b/serial/src/main/java/org/sheedon/serial/SerialClient.java
index 0e79135..f7fa6f1 100644
--- a/serial/src/main/java/org/sheedon/serial/SerialClient.java
+++ b/serial/src/main/java/org/sheedon/serial/SerialClient.java
@@ -95,6 +95,13 @@ public void onCallback(ResponseBody data) {
         callback.onCallback(data);
     }
 
+    @Override
+    public void onRequest(String message) {
+        if (callback == null)
+            return;
+        callback.onRequest(message);
+    }
+
     /**
      * 获取调度器
      */
diff --git a/serial/src/main/java/org/sheedon/serial/serialport/SerialRealCallback.java b/serial/src/main/java/org/sheedon/serial/serialport/SerialRealCallback.java
index b61ff48..83a413a 100644
--- a/serial/src/main/java/org/sheedon/serial/serialport/SerialRealCallback.java
+++ b/serial/src/main/java/org/sheedon/serial/serialport/SerialRealCallback.java
@@ -13,4 +13,6 @@ public interface SerialRealCallback {
 
     void onCallback(ResponseBody data);
 
+    void onRequest(String message);
+
 }