diff --git a/src/QtScrcpy.pro.user b/src/QtScrcpy.pro.user
index 175f3dd..fdf11a1 100644
--- a/src/QtScrcpy.pro.user
+++ b/src/QtScrcpy.pro.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.6.2, 2018-10-11T19:35:50. -->
+<!-- Written by QtCreator 4.6.2, 2018-10-11T22:14:16. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
@@ -292,7 +292,7 @@
     <value type="QString" key="Qt4ProjectManager.Qt4RunConfiguration.ProFile">QtScrcpy.pro</value>
     <value type="bool" key="Qt4ProjectManager.Qt4RunConfiguration.UseDyldImageSuffix">false</value>
     <value type="QString" key="Qt4ProjectManager.Qt4RunConfiguration.UserWorkingDirectory"></value>
-    <value type="QString" key="Qt4ProjectManager.Qt4RunConfiguration.UserWorkingDirectory.default"></value>
+    <value type="QString" key="Qt4ProjectManager.Qt4RunConfiguration.UserWorkingDirectory.default">G:/mygitcode/QtScrcpy/build-QtScrcpy-Desktop_Qt_5_9_6_MSVC2015_32bit-Debug</value>
     <value type="uint" key="RunConfiguration.QmlDebugServerPort">3768</value>
     <value type="bool" key="RunConfiguration.UseCppDebugger">false</value>
     <value type="bool" key="RunConfiguration.UseCppDebuggerAuto">true</value>
diff --git a/src/dialog.cpp b/src/dialog.cpp
index 53d7f91..7cac0b6 100644
--- a/src/dialog.cpp
+++ b/src/dialog.cpp
@@ -9,6 +9,11 @@ Dialog::Dialog(QWidget *parent) :
 {
     ui->setupUi(this);
     server = new Server();
+    connect(server, &Server::serverStartResult, this, [this](bool success){
+        if (success) {
+            server->connectTo();
+        }
+    });
 }
 
 Dialog::~Dialog()
@@ -28,6 +33,7 @@ void Dialog::on_adbProcess_clicked()
 void Dialog::on_startServerBtn_clicked()
 {
     server->start("P7C0218510000537", 27183, 0, 8000000, "");
+    //server->start("P7CDU17C23010875", 27183, 0, 8000000, "");
 }
 
 void Dialog::on_stopServerBtn_clicked()
diff --git a/src/server.cpp b/src/server.cpp
index 45c8386..d4ebb26 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -149,20 +149,31 @@ bool Server::start(const QString& serial, quint16 localPort, quint16 maxSize, qu
     return startServerByStep();
 }
 
-void Server::connectTo()
+bool Server::connectTo()
 {
+    if (SSS_RUNNING != m_serverStartStep) {
+        qWarning("server not run");
+        return false;
+    }
     if (m_tunnelForward) {
         m_deviceSocket = new QTcpSocket(this);
         connect(m_deviceSocket, &QTcpSocket::disconnected, m_deviceSocket, &QTcpSocket::deleteLater);
         //connect(m_deviceSocket, &QTcpSocket::error, m_deviceSocket, &QTcpSocket::deleteLater);
         connect(m_deviceSocket, &QTcpSocket::readyRead, this, [this](){
-            qDebug() << "ready read";
-            m_deviceSocket->readAll();
+            static quint64 count = 0;
+            qDebug() << count <<  "ready read";
+            count++;
+        });
+
+        // wait for devices server start
+        QTimer::singleShot(1000, this, [this](){
+            if (m_deviceSocket) {
+                m_deviceSocket->connectToHost(QHostAddress::LocalHost, m_localPort);
+            }
         });
-        m_deviceSocket->connectToHost(QHostAddress::LocalHost, m_localPort);
     }
 
-    QTimer::singleShot(300, this, [this](){
+    QTimer::singleShot(1200, this, [this](){
         if (!m_deviceSocket) {
             emit connectToResult(false);
             return;
@@ -204,9 +215,11 @@ void Server::connectTo()
             } else {
                 disableTunnelReverse();
             }
+            m_tunnelEnabled = false;
         }
         emit connectToResult(success);
     });
+    return true;
 }
 
 void Server::stop()
@@ -219,9 +232,12 @@ void Server::stop()
         } else {
             disableTunnelReverse();
         }
+        m_tunnelForward = false;
+        m_tunnelEnabled = false;
     }
     if (m_serverCopiedToDevice) {
         removeServer();
+        m_serverCopiedToDevice = false;
     }
     m_serverSocket.close();
     if (m_deviceSocket) {
@@ -325,7 +341,7 @@ void Server::onWorkProcessResult(AdbProcess::ADB_EXEC_RESULT processResult)
     if (sender() == &m_serverProcess) {
         if (SSS_EXECUTE_SERVER == m_serverStartStep) {
             if (AdbProcess::AER_SUCCESS_START == processResult) {
-                m_serverStartStep = SSS_NULL;
+                m_serverStartStep = SSS_RUNNING;
                 m_tunnelEnabled = true;
                 emit serverStartResult(true);
             } else if (AdbProcess::AER_ERROR_START == processResult){
diff --git a/src/server.h b/src/server.h
index 7bb3df5..8ceff41 100644
--- a/src/server.h
+++ b/src/server.h
@@ -18,12 +18,13 @@ class Server : public QObject
         SSS_ENABLE_TUNNEL_REVERSE,
         SSS_ENABLE_TUNNEL_FORWARD,
         SSS_EXECUTE_SERVER,
+        SSS_RUNNING,
     };
 public:
     explicit Server(QObject *parent = nullptr);
 
     bool start(const QString& serial, quint16 localPort, quint16 maxSize, quint32 bitRate, const QString& crop);
-    void connectTo();
+    bool connectTo();
     void stop();
 
 signals:
@@ -44,6 +45,7 @@ private:
     bool execute();
     bool startServerByStep();
 
+private:
     QString m_serverPath = "";
     AdbProcess m_workProcess;
     QString m_serial = "";