diff --git a/examples/qqtclientexample/mainwindow.cpp b/examples/qqtclientexample/mainwindow.cpp
index 03dd05a2..9e568503 100644
--- a/examples/qqtclientexample/mainwindow.cpp
+++ b/examples/qqtclientexample/mainwindow.cpp
@@ -14,7 +14,8 @@ MainWindow::MainWindow ( QWidget* parent ) :
     //
     p = QQtClientConnectionInstance ( this );
     connect ( p, SIGNAL ( signalServerSay ( QString ) ),
-              this, SLOT ( on_recv_say_hello ( QString ) ) );
+              this, SLOT ( on_recv_say_hello ( QString ) ),
+              Qt::QueuedConnection );
 
     //QQtClient2Protocol* p0 = QQtClient2ConnectionInstance ( this );
     //p0->sendCommand1();
diff --git a/examples/qqtclientexample/qqtclientprotocol.h b/examples/qqtclientexample/qqtclientprotocol.h
index 4bf70802..3f68376c 100644
--- a/examples/qqtclientexample/qqtclientprotocol.h
+++ b/examples/qqtclientexample/qqtclientprotocol.h
@@ -149,7 +149,6 @@ protected:
     }
 
     virtual quint16 splitter ( const QByteArray& l ) override { //stream
-        pline() << l[0] << l[1] << l[2] << l[3] << l[4] << l[5] << l[6] << l[7];
         for ( int i = 0; i < l.size(); i++ ) {
             pline() << l[i];
         }
@@ -157,7 +156,6 @@ protected:
         QByteArray s0 = l.left ( 3 );
         quint8 start = 0;
         quint16 size = 0;
-        pline() << s0[0] << s0[1] << s0[2];
 
         s0 >> start;
         s0 >> size;
diff --git a/src/linux_cd_path.sh b/src/linux_cd_path.sh
old mode 100755
new mode 100644
diff --git a/src/linux_cp_files.sh b/src/linux_cp_files.sh
old mode 100755
new mode 100644
diff --git a/src/linux_cur_path.sh b/src/linux_cur_path.sh
old mode 100755
new mode 100644
diff --git a/src/network/qqttcpclient.cpp b/src/network/qqttcpclient.cpp
index 8045c474..7ed9059f 100644
--- a/src/network/qqttcpclient.cpp
+++ b/src/network/qqttcpclient.cpp
@@ -143,10 +143,6 @@ void QQtTcpClient::socketStateChanged ( QAbstractSocket::SocketState eSocketStat
 
         case QAbstractSocket::UnconnectedState:
         {
-            eConType++;
-            QSettings set;
-            set.setValue ( "Network/eConType", eConType );
-            set.sync();
             break;
         }
         default:
@@ -173,8 +169,19 @@ void QQtTcpClient::socketErrorOccured ( QAbstractSocket::SocketError e )
 
         case QAbstractSocket::HostNotFoundError:
         default:
+        {
+            QSettings set;
+            int contype = set.value ( "Network/eConType", 0 ).toInt();
+            contype++;
+            contype = contype % m_serverIP.size();
+            set.setValue ( "Network/eConType", contype );
+            set.sync();
+
+            eConType = contype;
+
             emit signalConnectFail();
-            break;
+        }
+        break;
     }
 }
 
@@ -212,9 +219,12 @@ void QQtTcpClient::updateProgress ( qint64 bytes )
 
 void QQtTcpClient::connectToSingelHost()
 {
+    //int contype = eConType % m_serverIP.size();
+
     QSettings set;
     int contype = set.value ( "Network/eConType", 0 ).toInt();
-    //int contype = eConType % m_serverIP.size();
+    contype = contype % m_serverIP.size();
+
     QString ip = m_serverIP.at ( contype );
     connectToHost ( QHostAddress ( ip ), m_PORT );