Resume sync when connectivity is established

include/MatrixClient.h

@@ -50,7 +50,7 @@ public:
         void fetchUserAvatar(const QString &userId, const QUrl &avatarUrl);
         void fetchOwnAvatar(const QUrl &avatar_url);
         void downloadImage(const QString &event_id, const QUrl &url);
-        void messages(const QString &room_id, const QString &from_token, int limit = 20) noexcept;
+        void messages(const QString &room_id, const QString &from_token, int limit = 30) noexcept;
         void uploadImage(const QString &roomid, const QString &filename);
         void joinRoom(const QString &roomIdOrAlias);
         void leaveRoom(const QString &roomId);

src/MatrixClient.cc

@@ -44,6 +44,13 @@ MatrixClient::MatrixClient(QString server, QObject *parent)
         txn_id_ = settings.value("client/transaction_id", 1).toInt();
 
         connect(this, SIGNAL(finished(QNetworkReply *)), this, SLOT(onResponse(QNetworkReply *)));
+        connect(this,
+                &QNetworkAccessManager::networkAccessibleChanged,
+                this,
+                [=](NetworkAccessibility status) {
+                        if (status != NetworkAccessibility::Accessible)
+                                setNetworkAccessible(NetworkAccessibility::Accessible);
+                });
 }
 
 void