From 0ca674a313d43a06be8455f81619e79790fd5f5a Mon Sep 17 00:00:00 2001
From: Elias Steurer <i@kelteseth.net>
Date: Fri, 14 Aug 2020 11:28:58 +0200
Subject: [PATCH] Add another check if main application is still running

The timeout of pipes is quite high so we need to ping them regularly
---
 ScreenPlaySDK/inc/screenplaysdk.h   |  2 ++
 ScreenPlaySDK/src/screenplaysdk.cpp | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/ScreenPlaySDK/inc/screenplaysdk.h b/ScreenPlaySDK/inc/screenplaysdk.h
index 242e87fa..2eca5c6f 100644
--- a/ScreenPlaySDK/inc/screenplaysdk.h
+++ b/ScreenPlaySDK/inc/screenplaysdk.h
@@ -84,6 +84,7 @@ public slots:
     void readyRead();
     void error(QLocalSocket::LocalSocketError socketError);
     void redirectMessage(QByteArray& msg);
+    void pingAlive();
 
     void setType(QString type)
     {
@@ -145,4 +146,5 @@ private:
     bool m_isConnected = false;
 
     QString m_appID;
+    QTimer m_pingAliveTimer;
 };
diff --git a/ScreenPlaySDK/src/screenplaysdk.cpp b/ScreenPlaySDK/src/screenplaysdk.cpp
index 3df30d77..3cab342e 100644
--- a/ScreenPlaySDK/src/screenplaysdk.cpp
+++ b/ScreenPlaySDK/src/screenplaysdk.cpp
@@ -41,6 +41,9 @@ void ScreenPlaySDK::init()
             m_socket.disconnectFromServer();
             emit sdkDisconnected();
         }
+
+        QObject::connect(&m_pingAliveTimer, &QTimer::timeout, this, &ScreenPlaySDK::pingAlive);
+        m_pingAliveTimer.start(5000);
     });
 }
 
@@ -152,6 +155,15 @@ void ScreenPlaySDK::redirectMessage(QByteArray& msg)
     }
 }
 
+void ScreenPlaySDK::pingAlive()
+{
+    m_socket.write("ping");
+    if (!m_socket.waitForBytesWritten(500)) {
+        qInfo() << "Cannot ping to main application. Closing!";
+        emit sdkDisconnected();
+    }
+}
+
 void ScreenPlaySDK::ScreenPlaySDK::redirectMessageOutputToMainWindow(QtMsgType type, const QMessageLogContext& context, const QString& msg)
 {
     Q_UNUSED(type)