diff --git a/src/QtScrcpy.pro b/src/QtScrcpy.pro
index 4f92b6f..b574be9 100644
--- a/src/QtScrcpy.pro
+++ b/src/QtScrcpy.pro
@@ -36,7 +36,8 @@ SOURCES += \
     fpscounter.cpp \
     qyuvopenglwidget.cpp \
     videoform.cpp \
-    devicesocket.cpp
+    devicesocket.cpp \
+    tcpserver.cpp
 
 HEADERS += \
         dialog.h \
@@ -48,7 +49,8 @@ HEADERS += \
     fpscounter.h \
     qyuvopenglwidget.h \
     videoform.h \
-    devicesocket.h
+    devicesocket.h \
+    tcpserver.h
 
 FORMS += \
         dialog.ui \
diff --git a/src/decoder.cpp b/src/decoder.cpp
index 25ee450..aa98d94 100644
--- a/src/decoder.cpp
+++ b/src/decoder.cpp
@@ -45,7 +45,7 @@ static qint32 readPacket(void *opaque, quint8 *buf, qint32 bufSize) {
     return 0;
 }
 
-void Decoder::setDeviceSocket(QTcpSocket* deviceSocket)
+void Decoder::setDeviceSocket(DeviceSocket* deviceSocket)
 {
     m_deviceSocket = deviceSocket;
 }
@@ -56,16 +56,7 @@ qint32 Decoder::recvData(quint8* buf, qint32 bufSize)
         return 0;
     }
     if (m_deviceSocket) {
-        while (!m_quit && m_deviceSocket->bytesAvailable() <= 0) {
-            if (!m_deviceSocket->waitForReadyRead(300)
-                    && QTcpSocket::SocketTimeoutError != m_deviceSocket->error()) {
-                qDebug() << "waitForReadyRead error " << m_deviceSocket->error();
-                break;                
-            }
-        }
-        qint64 readSize = qMin(m_deviceSocket->bytesAvailable(), (qint64)bufSize);
-        //qDebug() << "ready recv data " << readSize;
-        return m_deviceSocket->read((char*)buf, readSize);
+        return m_deviceSocket->recvData(buf, bufSize);
     }    
     return 0;
 }
@@ -239,12 +230,7 @@ runQuit:
             avcodec_free_context(&codecCtx);
         }
 
-        emit onDecodeStop();
-
-        if (m_deviceSocket) {
-            m_deviceSocket->disconnectFromHost();
-            delete m_deviceSocket;
-        }
+        emit onDecodeStop();        
 }
 
 void Decoder::pushFrame()
diff --git a/src/decoder.h b/src/decoder.h
index 36d3a52..ffab273 100644
--- a/src/decoder.h
+++ b/src/decoder.h
@@ -2,10 +2,10 @@
 #define DECODER_H
 #include <functional>
 #include <QThread>
-#include <QTcpSocket>
 #include <QPointer>
 #include <QMutex>
 
+#include "devicesocket.h"
 extern "C"
 {
 #include "libavcodec/avcodec.h"
@@ -26,7 +26,7 @@ public:
     static void deInit();    
 
     void setFrames(Frames* frames);
-    void setDeviceSocket(QTcpSocket* deviceSocket);
+    void setDeviceSocket(DeviceSocket* deviceSocket);
     qint32 recvData(quint8* buf, qint32 bufSize);
     bool startDecode();
     void stopDecode();
@@ -40,7 +40,7 @@ protected:
     void pushFrame();
 
 private:
-    QPointer<QTcpSocket> m_deviceSocket = Q_NULLPTR;    
+    QPointer<DeviceSocket> m_deviceSocket;
     QMutex m_mutex;
     bool m_quit = false;
     Frames* m_frames;
diff --git a/src/devicesocket.cpp b/src/devicesocket.cpp
index 5fc85df..82372b3 100644
--- a/src/devicesocket.cpp
+++ b/src/devicesocket.cpp
@@ -1,13 +1,27 @@
+#include <QCoreApplication>
+#include <QDebug>
+
 #include "devicesocket.h"
 
+static const int GetDataEvent = QEvent::registerEventType(QEvent::User+1);
+class DeviceSocketEvent : public QEvent
+{
+public:
+    DeviceSocketEvent() : QEvent(QEvent::Type(GetDataEvent)){}
+};
+
 DeviceSocket::DeviceSocket(QObject *parent) : QTcpSocket(parent)
 {
     connect(this, &DeviceSocket::readyRead, this, &DeviceSocket::onReadyRead);
+    connect(this, &DeviceSocket::aboutToClose, this, &DeviceSocket::quitNotify);
+    connect(this, &DeviceSocket::disconnected, this, &DeviceSocket::quitNotify);
+
+    installEventFilter(this);
 }
 
 DeviceSocket::~DeviceSocket()
 {
-
+    quitNotify();
 }
 
 qint32 DeviceSocket::recvData(quint8 *buf, qint32 bufSize)
@@ -16,13 +30,30 @@ qint32 DeviceSocket::recvData(quint8 *buf, qint32 bufSize)
 
     m_buffer = buf;
     m_bufferSize = bufSize;
+    m_dataSize = 0;
+
     // post event
+    DeviceSocketEvent* getDataEvent = new DeviceSocketEvent();
+    QCoreApplication::postEvent(this, getDataEvent);
+
+    // wait
     while (!m_recvData) {
         m_recvDataCond.wait(&m_mutex);
     }
+
+    m_recvData = false;
     return m_dataSize;
 }
 
+bool DeviceSocket::eventFilter(QObject *watched, QEvent *event)
+{
+    if (event->type() == GetDataEvent) {
+        onReadyRead();
+        return true;
+    }
+    return false;
+}
+
 void DeviceSocket::onReadyRead()
 {
     QMutexLocker locker(&m_mutex);
@@ -37,3 +68,15 @@ void DeviceSocket::onReadyRead()
         m_recvDataCond.wakeOne();
     }
 }
+
+void DeviceSocket::quitNotify()
+{
+    QMutexLocker locker(&m_mutex);
+    if (m_buffer) {
+        m_buffer = Q_NULLPTR;
+        m_bufferSize = 0;
+        m_recvData = true;
+        m_dataSize = 0;
+        m_recvDataCond.wakeOne();
+    }
+}
diff --git a/src/devicesocket.h b/src/devicesocket.h
index d698a78..9101302 100644
--- a/src/devicesocket.h
+++ b/src/devicesocket.h
@@ -1,6 +1,7 @@
 #ifndef DEVICESOCKET_H
 #define DEVICESOCKET_H
 
+#include <QEvent>
 #include <QTcpSocket>
 #include <QMutex>
 #include <QWaitCondition>
@@ -14,10 +15,12 @@ public:
 
     qint32 recvData(quint8* buf, qint32 bufSize);
 
-signals:
+protected:
+    bool eventFilter(QObject *watched, QEvent *event);
 
 protected slots:
     void onReadyRead();
+    void quitNotify();
 
 private:
     QMutex m_mutex;
diff --git a/src/server.cpp b/src/server.cpp
index 7453390..bd3ee7f 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -17,9 +17,8 @@ Server::Server(QObject *parent) : QObject(parent)
     connect(&m_workProcess, &AdbProcess::adbProcessResult, this, &Server::onWorkProcessResult);
     connect(&m_serverProcess, &AdbProcess::adbProcessResult, this, &Server::onWorkProcessResult);
 
-    connect(&m_serverSocket, &QTcpServer::newConnection, this, [this](){
-        m_deviceSocket = m_serverSocket.nextPendingConnection();
-        m_deviceSocket->setParent(Q_NULLPTR);
+    connect(&m_serverSocket, &QTcpServer::newConnection, this, [this](){        
+        m_deviceSocket = dynamic_cast<DeviceSocket*>(m_serverSocket.nextPendingConnection());
 
         QString deviceName;
         QSize deviceSize;
@@ -186,7 +185,7 @@ bool Server::connectTo()
     QSize deviceSize;
     bool success = false;
 
-    m_deviceSocket = new QTcpSocket();
+    m_deviceSocket = new DeviceSocket();
 
     // wait for devices server start
     m_deviceSocket->connectToHost(QHostAddress::LocalHost, m_localPort);
@@ -235,23 +234,17 @@ void Server::timerEvent(QTimerEvent *event)
     }
 }
 
-QTcpSocket* Server::getDeviceSocketByThread(QThread* thread)
-{
-    if (!m_deviceSocket || QThread::currentThread() != m_deviceSocket->thread()) {
-        return Q_NULLPTR;
-    }
-
-    if (thread) {
-        m_deviceSocket->moveToThread(thread);
-    }
-    QTcpSocket* devicesSocket = m_deviceSocket;
-    m_deviceSocket = Q_NULLPTR;
-
-    return devicesSocket;
+DeviceSocket* Server::getDeviceSocket()
+{    
+    return m_deviceSocket;
 }
 
 void Server::stop()
 {
+    if (m_deviceSocket) {
+        m_deviceSocket->close();
+        m_deviceSocket->deleteLater();
+    }
     // ignore failure
     m_serverProcess.kill();
     if (m_tunnelEnabled) {
@@ -267,11 +260,7 @@ void Server::stop()
         removeServer();
         m_serverCopiedToDevice = false;
     }
-    m_serverSocket.close();
-    if (m_deviceSocket) {
-        m_deviceSocket->close();
-        m_deviceSocket->deleteLater();
-    }
+    m_serverSocket.close();    
 }
 
 bool Server::startServerByStep()
diff --git a/src/server.h b/src/server.h
index 1e62b13..9324538 100644
--- a/src/server.h
+++ b/src/server.h
@@ -2,10 +2,10 @@
 #define SERVER_H
 
 #include <QObject>
-#include <QTcpSocket>
-#include <QTcpServer>
 #include <QPointer>
 
+#include "tcpServer.h"
+#include "devicesocket.h"
 #include "adbprocess.h"
 
 class Server : public QObject
@@ -27,9 +27,7 @@ public:
     bool start(const QString& serial, quint16 localPort, quint16 maxSize, quint32 bitRate, const QString& crop);    
     bool connectTo();
 
-    // you can call this if you will use device socket in sub thread
-    // must call this in main thread
-    QTcpSocket* getDeviceSocketByThread(QThread* thread);
+    DeviceSocket* getDeviceSocket();
 
     void stop();
 
@@ -63,8 +61,8 @@ private:
     AdbProcess m_workProcess;
     QString m_serial = "";
     AdbProcess m_serverProcess;
-    QTcpServer m_serverSocket; // only used if !tunnel_forward
-    QPointer<QTcpSocket> m_deviceSocket = Q_NULLPTR;
+    TcpServer m_serverSocket; // only used if !tunnel_forward
+    QPointer<DeviceSocket> m_deviceSocket = Q_NULLPTR;
     quint16 m_localPort = 0;
     bool m_tunnelEnabled = false;
     bool m_tunnelForward = false; // use "adb forward" instead of "adb reverse"
diff --git a/src/tcpserver.cpp b/src/tcpserver.cpp
new file mode 100644
index 0000000..fdc9a64
--- /dev/null
+++ b/src/tcpserver.cpp
@@ -0,0 +1,19 @@
+#include "tcpserver.h"
+#include "devicesocket.h"
+
+TcpServer::TcpServer(QObject *parent) : QTcpServer(parent)
+{
+
+}
+
+TcpServer::~TcpServer()
+{
+
+}
+
+void TcpServer::incomingConnection(qintptr handle)
+{
+    DeviceSocket *socket = new DeviceSocket();
+    socket->setSocketDescriptor(handle);
+    addPendingConnection(socket);
+}
diff --git a/src/tcpserver.h b/src/tcpserver.h
new file mode 100644
index 0000000..7156814
--- /dev/null
+++ b/src/tcpserver.h
@@ -0,0 +1,17 @@
+#ifndef TCPSERVER_H
+#define TCPSERVER_H
+
+#include <QTcpServer>
+
+class TcpServer : public QTcpServer
+{
+    Q_OBJECT
+public:
+    explicit TcpServer(QObject *parent = nullptr);
+    virtual ~TcpServer();
+
+protected:
+    virtual void incomingConnection(qintptr handle);
+};
+
+#endif // TCPSERVER_H
diff --git a/src/videoform.cpp b/src/videoform.cpp
index 73760b1..2034d0d 100644
--- a/src/videoform.cpp
+++ b/src/videoform.cpp
@@ -32,7 +32,7 @@ VideoForm::VideoForm(QWidget *parent) :
             }
 
             // init decode
-            m_decoder.setDeviceSocket(m_server->getDeviceSocketByThread(&m_decoder));
+            m_decoder.setDeviceSocket(m_server->getDeviceSocket());
             m_decoder.startDecode();
         }
     });
@@ -58,12 +58,13 @@ VideoForm::VideoForm(QWidget *parent) :
     },Qt::QueuedConnection);
 
     m_server->start("P7C0218510000537", 27183, 1080, 8000000, "");
+    //m_server->start("P7C0218510000537", 27183, 0, 8000000, "");
 }
 
 VideoForm::~VideoForm()
 {
-    m_decoder.stopDecode();
     m_server->stop();
+    m_decoder.stopDecode();
     delete m_server;
     m_frames.deInit();
     delete ui;