diff --git a/src/libs/qmldebug/declarativetoolsclient.cpp b/src/libs/qmldebug/declarativetoolsclient.cpp
index 98304b85dda..a08a672f749 100644
--- a/src/libs/qmldebug/declarativetoolsclient.cpp
+++ b/src/libs/qmldebug/declarativetoolsclient.cpp
@@ -235,7 +235,7 @@ QList<int> DeclarativeToolsClient::currentObjects() const
 
 void DeclarativeToolsClient::setCurrentObjects(const QList<int> &debugIds)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     if (debugIds == m_currentDebugIds)
@@ -289,7 +289,7 @@ void DeclarativeToolsClient::setObjectIdList(
 
 void DeclarativeToolsClient::clearComponentCache()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -308,7 +308,7 @@ void DeclarativeToolsClient::reload(const QHash<QString,
 {
     Q_UNUSED(changesHash);
 
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -324,7 +324,7 @@ void DeclarativeToolsClient::reload(const QHash<QString,
 
 void DeclarativeToolsClient::setDesignModeBehavior(bool inDesignMode)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -341,7 +341,7 @@ void DeclarativeToolsClient::setDesignModeBehavior(bool inDesignMode)
 
 void DeclarativeToolsClient::setAnimationSpeed(qreal slowDownFactor)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -359,7 +359,7 @@ void DeclarativeToolsClient::setAnimationSpeed(qreal slowDownFactor)
 
 void DeclarativeToolsClient::setAnimationPaused(bool paused)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -376,7 +376,7 @@ void DeclarativeToolsClient::setAnimationPaused(bool paused)
 
 void DeclarativeToolsClient::changeToSelectTool()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -394,7 +394,7 @@ void DeclarativeToolsClient::changeToSelectTool()
 
 void DeclarativeToolsClient::changeToSelectMarqueeTool()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -412,7 +412,7 @@ void DeclarativeToolsClient::changeToSelectMarqueeTool()
 
 void DeclarativeToolsClient::changeToZoomTool()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -430,7 +430,7 @@ void DeclarativeToolsClient::changeToZoomTool()
 
 void DeclarativeToolsClient::showAppOnTop(bool showOnTop)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -449,7 +449,7 @@ void DeclarativeToolsClient::createQmlObject(const QString &qmlText,
                                            const QStringList &imports,
                                            const QString &filename, int order)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -472,7 +472,7 @@ void DeclarativeToolsClient::createQmlObject(const QString &qmlText,
 
 void DeclarativeToolsClient::destroyQmlObject(int debugId)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
     QByteArray message;
     QDataStream ds(&message, QIODevice::WriteOnly);
@@ -487,7 +487,7 @@ void DeclarativeToolsClient::destroyQmlObject(int debugId)
 
 void DeclarativeToolsClient::reparentQmlObject(int debugId, int newParent)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
     QByteArray message;
     QDataStream ds(&message, QIODevice::WriteOnly);
@@ -506,7 +506,7 @@ void DeclarativeToolsClient::reparentQmlObject(int debugId, int newParent)
 
 void DeclarativeToolsClient::applyChangesToQmlFile()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     // TODO
@@ -514,7 +514,7 @@ void DeclarativeToolsClient::applyChangesToQmlFile()
 
 void DeclarativeToolsClient::applyChangesFromQmlFile()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     // TODO
diff --git a/src/libs/qmldebug/qmldebugclient.cpp b/src/libs/qmldebug/qmldebugclient.cpp
index d9cf8fa932c..1a7f8656f83 100644
--- a/src/libs/qmldebug/qmldebugclient.cpp
+++ b/src/libs/qmldebug/qmldebugclient.cpp
@@ -82,7 +82,7 @@ QmlDebugConnectionPrivate::QmlDebugConnectionPrivate(QmlDebugConnection *c)
 
 void QmlDebugConnectionPrivate::advertisePlugins()
 {
-    if (!q->isConnected() || !gotHello)
+    if (!q->isOpen())
         return;
 
     QPacket pack;
@@ -230,9 +230,9 @@ QmlDebugConnection::~QmlDebugConnection()
     }
 }
 
-bool QmlDebugConnection::isConnected() const
+bool QmlDebugConnection::isOpen() const
 {
-    return socketState() == QAbstractSocket::ConnectedState;
+    return socketState() == QAbstractSocket::ConnectedState && d->gotHello;
 }
 
 void QmlDebugConnection::close()
@@ -340,9 +340,7 @@ float QmlDebugClient::serviceVersion() const
 QmlDebugClient::State QmlDebugClient::state() const
 {
     Q_D(const QmlDebugClient);
-    if (!d->connection
-            || !d->connection->isConnected()
-            || !d->connection->d->gotHello)
+    if (!d->connection || !d->connection->isOpen())
         return NotConnected;
 
     if (d->connection->d->serverPlugins.contains(d->name))
diff --git a/src/libs/qmldebug/qmldebugclient.h b/src/libs/qmldebug/qmldebugclient.h
index e4109f97d73..c865f410a54 100644
--- a/src/libs/qmldebug/qmldebugclient.h
+++ b/src/libs/qmldebug/qmldebugclient.h
@@ -48,7 +48,7 @@ public:
 
     void connectToHost(const QString &hostName, quint16 port);
 
-    bool isConnected() const;
+    bool isOpen() const;
     QAbstractSocket::SocketState socketState() const;
     void close();
     QString errorString() const;
diff --git a/src/libs/qmldebug/qmltoolsclient.cpp b/src/libs/qmldebug/qmltoolsclient.cpp
index d6d857e9ea6..3607c51779b 100644
--- a/src/libs/qmldebug/qmltoolsclient.cpp
+++ b/src/libs/qmldebug/qmltoolsclient.cpp
@@ -127,7 +127,7 @@ QList<int> QmlToolsClient::currentObjects() const
 
 void QmlToolsClient::setCurrentObjects(const QList<int> &debugIds)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     if (debugIds == m_currentDebugIds)
@@ -153,7 +153,7 @@ void QmlToolsClient::setObjectIdList(
 
 void QmlToolsClient::clearComponentCache()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -168,7 +168,7 @@ void QmlToolsClient::clearComponentCache()
 
 void QmlToolsClient::reload(const QHash<QString, QByteArray> &changesHash)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     m_reloadQueryId = m_requestId;
@@ -185,7 +185,7 @@ void QmlToolsClient::reload(const QHash<QString, QByteArray> &changesHash)
 
 void QmlToolsClient::setDesignModeBehavior(bool inDesignMode)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -203,7 +203,7 @@ void QmlToolsClient::setDesignModeBehavior(bool inDesignMode)
 
 void QmlToolsClient::setAnimationSpeed(qreal slowDownFactor)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -244,7 +244,7 @@ void QmlToolsClient::changeToZoomTool()
 
 void QmlToolsClient::showAppOnTop(bool showOnTop)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -262,7 +262,7 @@ void QmlToolsClient::createQmlObject(const QString &qmlText,
                                            const QStringList &imports,
                                            const QString &filename, int order)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     QByteArray message;
@@ -284,7 +284,7 @@ void QmlToolsClient::createQmlObject(const QString &qmlText,
 
 void QmlToolsClient::destroyQmlObject(int debugId)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
     QByteArray message;
     QDataStream ds(&message, QIODevice::WriteOnly);
@@ -299,7 +299,7 @@ void QmlToolsClient::destroyQmlObject(int debugId)
 
 void QmlToolsClient::reparentQmlObject(int debugId, int newParent)
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
     QByteArray message;
     QDataStream ds(&message, QIODevice::WriteOnly);
@@ -315,7 +315,7 @@ void QmlToolsClient::reparentQmlObject(int debugId, int newParent)
 
 void QmlToolsClient::applyChangesToQmlFile()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     // TODO
@@ -323,7 +323,7 @@ void QmlToolsClient::applyChangesToQmlFile()
 
 void QmlToolsClient::applyChangesFromQmlFile()
 {
-    if (!m_connection || !m_connection->isConnected())
+    if (!m_connection || !m_connection->isOpen())
         return;
 
     // TODO
diff --git a/src/plugins/qmlprofiler/qmlprofilerclientmanager.cpp b/src/plugins/qmlprofiler/qmlprofilerclientmanager.cpp
index 5501d505156..906573dde1a 100644
--- a/src/plugins/qmlprofiler/qmlprofilerclientmanager.cpp
+++ b/src/plugins/qmlprofiler/qmlprofilerclientmanager.cpp
@@ -243,7 +243,7 @@ void QmlProfilerClientManager::connectToClient()
 
 bool QmlProfilerClientManager::isConnected() const
 {
-    return d->connection && d->connection->isConnected();
+    return d->connection && d->connection->isOpen();
 }
 
 void QmlProfilerClientManager::disconnectClient()
@@ -260,7 +260,7 @@ void QmlProfilerClientManager::tryToConnect()
 {
     ++d->connectionAttempts;
 
-    if (d->connection && d->connection->isConnected()) {
+    if (d->connection && d->connection->isOpen()) {
         d->connectionTimer.stop();
         d->connectionAttempts = 0;
     } else if (d->connectionAttempts == 50) {