Android: Fix QML debugging

Specify the qml server address and use correct default loop back
address in qmlengine

Change-Id: I9b77cb3385041bbe79900e7f7a188ca26124bacc
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/plugins/android/androiddebugsupport.cpp

@@ -133,6 +133,7 @@ void AndroidDebugSupport::start()
                                                      .appendPath(toNdkArch(AndroidManager::targetArch(target))).toString();
     }
     if (isQmlDebugging()) {
+        params.qmlServer.host = m_runner->qmlServerHost();
         params.qmlServer.port = m_runner->qmlServerPort();
         //TODO: Not sure if these are the right paths.
         QtSupport::BaseQtVersion *version = QtSupport::QtKitInformation::qtVersion(kit);

src/plugins/android/androidrunner.cpp

@@ -226,7 +226,8 @@ public:
     Utils::Port localGdbServerPort() const { return m_localGdbServerPort; }
 
 signals:
-    void remoteProcessStarted(Utils::Port gdbServerPort, Utils::Port qmlServerPort, int pid);
+    void remoteProcessStarted(Utils::Port gdbServerPort, Utils::Port qmlServerPort,
+                              QString qmlServerHost, int pid);
     void remoteProcessFinished(const QString &errString = QString());
 
     void remoteOutput(const QString &output);
@@ -257,6 +258,7 @@ private:
     bool m_useCppDebugger = false;
     QmlDebug::QmlDebugServicesPreset m_qmlDebugServices;
     Utils::Port m_localGdbServerPort; // Local end of forwarded debug socket.
+    QString m_qmlServerHost;
     Utils::Port m_qmlPort;
     QString m_pingFile;
     QString m_pongFile;
@@ -295,6 +297,7 @@ AndroidRunnerWorker::AndroidRunnerWorker(RunControl *runControl, const AndroidRu
         QTC_ASSERT(server.listen(QHostAddress::LocalHost)
                    || server.listen(QHostAddress::LocalHostIPv6),
                    qDebug() << tr("No free ports available on host for QML debugging."));
+        m_qmlServerHost = server.serverAddress().toString();
         m_qmlPort = Utils::Port(server.serverPort());
     } else {
         m_qmlPort = Utils::Port();
@@ -638,7 +641,7 @@ void AndroidRunnerWorker::onProcessIdChanged(qint64 pid)
     } else {
         // In debugging cases this will be funneled to the engine to actually start
         // and attach gdb. Afterwards this ends up in handleRemoteDebuggerRunning() below.
-        emit remoteProcessStarted(m_localGdbServerPort, m_qmlPort, m_processPID);
+        emit remoteProcessStarted(m_localGdbServerPort, m_qmlPort, m_qmlServerHost, m_processPID);
         logcatReadStandardOutput();
         QTC_ASSERT(!m_psIsAlive, /**/);
         m_psIsAlive.reset(new QProcess);
@@ -782,10 +785,12 @@ void AndroidRunner::remoteErrorOutput(const QString &output)
     m_outputParser.processOutput(output);
 }
 
-void AndroidRunner::handleRemoteProcessStarted(Utils::Port gdbServerPort, Utils::Port qmlServerPort, int pid)
+void AndroidRunner::handleRemoteProcessStarted(Utils::Port gdbServerPort, Utils::Port qmlServerPort,
+                                               QString qmlServerHost, int pid)
 {
     m_pid = ProcessHandle(pid);
     m_gdbServerPort = gdbServerPort;
+    m_qmlServerHost = qmlServerHost;
     m_qmlServerPort = qmlServerPort;
     reportStarted();
 }

src/plugins/android/androidrunner.h

@@ -57,6 +57,7 @@ public:
     const AndroidRunnable &runnable() const { return m_androidRunnable; }
 
     Utils::Port gdbServerPort() const { return m_gdbServerPort; }
+    QString qmlServerHost() const { return m_qmlServerHost; }
     Utils::Port qmlServerPort() const { return m_qmlServerPort; }
     Utils::ProcessHandle pid() const { return m_pid; }
 
@@ -76,7 +77,8 @@ private:
     void remoteOutput(const QString &output);
     void remoteErrorOutput(const QString &output);
     void gotRemoteOutput(const QString &output);
-    void handleRemoteProcessStarted(Utils::Port gdbServerPort, Utils::Port qmlServerPort, int pid);
+    void handleRemoteProcessStarted(Utils::Port gdbServerPort, Utils::Port qmlServerPort,
+                                    QString qmlServerHost, int pid);
     void handleRemoteProcessFinished(const QString &errString = QString());
     void checkAVD();
     void launchAVD();
@@ -88,6 +90,7 @@ private:
     QScopedPointer<AndroidRunnerWorker> m_worker;
     QPointer<ProjectExplorer::Target> m_target;
     Utils::Port m_gdbServerPort;
+    QString m_qmlServerHost;
     Utils::Port m_qmlServerPort;
     Utils::ProcessHandle m_pid;
     QmlDebug::QmlOutputParser m_outputParser;

src/plugins/debugger/qml/qmlengine.cpp

@@ -427,7 +427,7 @@ void QmlEngine::beginConnection(Utils::Port port)
     QString host = runParameters().qmlServer.host;
     // Use localhost as default
     if (host.isEmpty())
-        host = "localhost";
+        host = QHostAddress(QHostAddress::LocalHost).toString();
 
     /*
      * Let plugin-specific code override the port printed by the application. This is necessary