From 234e867a8a069bf22544809bea17b4ff78c5142c Mon Sep 17 00:00:00 2001
From: Kevin Whitaker <eyecreate@eyecreate.org>
Date: Wed, 10 Apr 2019 17:07:58 -0400
Subject: [PATCH] Add code to publish/republish once network is reachable.
 Fixes #1.

---
 src/simplecasttcpservice.cpp | 18 ++++++++++++++++--
 src/simplecasttcpservice.h   |  5 +++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/simplecasttcpservice.cpp b/src/simplecasttcpservice.cpp
index 1de36d2..7cf949c 100644
--- a/src/simplecasttcpservice.cpp
+++ b/src/simplecasttcpservice.cpp
@@ -76,8 +76,9 @@ signals:
     void error(QTcpSocket::SocketError socketError);
 };
 
-SimpleCastTcpService::SimpleCastTcpService(MiniMediaPlayer *player,QObject *parent) : QTcpServer(parent),player(player)
+SimpleCastTcpService::SimpleCastTcpService(MiniMediaPlayer *player,QObject *parent) : QTcpServer(parent),player(player),manager(new QNetworkAccessManager(this))
 {
+    connect(manager,SIGNAL(networkAccessibleChanged(QNetworkAccessManager::NetworkAccessibility)),this,SLOT(networkAccessChanged(QNetworkAccessManager::NetworkAccessibility)));
 }
 
 bool SimpleCastTcpService::listen(const QHostAddress& address, quint16 port)
@@ -87,10 +88,23 @@ bool SimpleCastTcpService::listen(const QHostAddress& address, quint16 port)
     //Setup DNSSD
     dnsService = new KDNSSD::PublicService(QString(),"_simplecast._tcp",this->serverPort(),"local");
     dnsService->setParent(this);
-    dnsService->publishAsync();
+    //Start publishing now and if not, wait for networkAccessibleManager to let us know.
+    if(manager->networkAccessible() == QNetworkAccessManager::Accessible && !dnsService->isPublished())
+    {
+        dnsService->publishAsync();
+    }
     return listening;
 }
 
+void SimpleCastTcpService::networkAccessChanged(QNetworkAccessManager::NetworkAccessibility accessible)
+{
+    if(accessible == QNetworkAccessManager::Accessible)
+    {
+        dnsService->publishAsync();
+    }
+        
+}
+
 void SimpleCastTcpService::close()
 {
     QTcpServer::close();
diff --git a/src/simplecasttcpservice.h b/src/simplecasttcpservice.h
index f9e12e6..2434442 100644
--- a/src/simplecasttcpservice.h
+++ b/src/simplecasttcpservice.h
@@ -21,6 +21,7 @@
 #include <QTcpServer>
 #include <KDNSSD/DNSSD/PublicService>
 #include "minimediaplayer.h"
+#include <QNetworkAccessManager>
 
 /**
  * Tcp Server that responds to simple client requests and can be found over DNSSD.
@@ -37,9 +38,13 @@ public:
 protected:
     void incomingConnection(qintptr handle) override;
     
+private slots:
+    void networkAccessChanged(QNetworkAccessManager::NetworkAccessibility accessible);
+    
 private:
     MiniMediaPlayer *player;
     KDNSSD::PublicService *dnsService;
+    QNetworkAccessManager *manager;
 
 };
 
-- 
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