From 9fe6d7417f5346b4e586ef556335db697e953d96 Mon Sep 17 00:00:00 2001
From: Klaus Basan <klaus.basan@klausbasan.de>
Date: Sun, 24 Jul 2016 01:37:03 +0200
Subject: [PATCH] refs #712, display error when network interface is not
 available

---
 src/swiftguistandard/main.cpp            | 6 +++++-
 src/swiftguistandard/swiftguistdinit.cpp | 7 +++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/swiftguistandard/main.cpp b/src/swiftguistandard/main.cpp
index 876519270..a294aaf86 100644
--- a/src/swiftguistandard/main.cpp
+++ b/src/swiftguistandard/main.cpp
@@ -27,7 +27,11 @@ int main(int argc, char *argv[])
     CSwiftGuiStdApplication a;
     a.signalStartupAutomatically(); // application will signal startup on its own
     a.splashScreen(":/own/icons/own/swift/swiftCirclePilotClient1024.png");
-    if (!a.start()) { return EXIT_FAILURE; }
+    if (!a.start())
+    {
+        a.gracefulShutdown();
+        return EXIT_FAILURE;
+    }
     //! [SwiftApplicationDemo]
 
     // show window
diff --git a/src/swiftguistandard/swiftguistdinit.cpp b/src/swiftguistandard/swiftguistdinit.cpp
index cdf9d2be1..e3f2ca85e 100644
--- a/src/swiftguistandard/swiftguistdinit.cpp
+++ b/src/swiftguistandard/swiftguistdinit.cpp
@@ -27,6 +27,7 @@
 #include "blackgui/managedstatusbar.h"
 #include "blackgui/overlaymessagesframe.h"
 #include "blackgui/stylesheetutility.h"
+#include "blackmisc/network/networkutils.h"
 #include "blackmisc/loghandler.h"
 #include "blackmisc/logmessage.h"
 #include "blackmisc/logpattern.h"
@@ -49,6 +50,7 @@ using namespace BlackConfig;
 using namespace BlackCore;
 using namespace BlackCore::Context;
 using namespace BlackMisc;
+using namespace BlackMisc::Network;
 using namespace BlackMisc::Input;
 using namespace BlackGui;
 using namespace BlackGui::Components;
@@ -148,6 +150,11 @@ void SwiftGuiStd::init()
 
     sGui->startUpCompleted(true);
     this->m_init = true;
+
+    if (!CNetworkUtils::hasConnectedInterface())
+    {
+        CLogMessage(this).error("No network interface, software will not work properly");
+    }
 }
 
 void SwiftGuiStd::initStyleSheet()