QtNetwork: Use Q_NULLPTR instead of 0 in all public headers

This is in preparation of adding -Wzero-as-null-pointer-constant (or similar)
to the headers check.

Task-number: QTBUG-45291
Change-Id: I9a05d375d2d9d3ed56079ad024c89a08a290619b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/network/access/qabstractnetworkcache.h

@@ -124,7 +124,7 @@ public Q_SLOTS:
     virtual void clear() = 0;
 
 protected:
-    explicit QAbstractNetworkCache(QObject *parent = 0);
+    explicit QAbstractNetworkCache(QObject *parent = Q_NULLPTR);
     QAbstractNetworkCache(QAbstractNetworkCachePrivate &dd, QObject *parent);
 
 private:

src/network/access/qhttpmultipart.h

@@ -91,8 +91,8 @@ public:
         AlternativeType
     };
 
-    explicit QHttpMultiPart(QObject *parent = 0);
-    explicit QHttpMultiPart(ContentType contentType, QObject *parent = 0);
+    explicit QHttpMultiPart(QObject *parent = Q_NULLPTR);
+    explicit QHttpMultiPart(ContentType contentType, QObject *parent = Q_NULLPTR);
     ~QHttpMultiPart();
 
     void append(const QHttpPart &httpPart);

src/network/access/qnetworkaccessmanager.h

@@ -90,7 +90,7 @@ public:
     };
 #endif
 
-    explicit QNetworkAccessManager(QObject *parent = 0);
+    explicit QNetworkAccessManager(QObject *parent = Q_NULLPTR);
     ~QNetworkAccessManager();
 
     // ### Qt 6: turn into virtual
@@ -120,7 +120,7 @@ public:
     QNetworkReply *put(const QNetworkRequest &request, const QByteArray &data);
     QNetworkReply *put(const QNetworkRequest &request, QHttpMultiPart *multiPart);
     QNetworkReply *deleteResource(const QNetworkRequest &request);
-    QNetworkReply *sendCustomRequest(const QNetworkRequest &request, const QByteArray &verb, QIODevice *data = 0);
+    QNetworkReply *sendCustomRequest(const QNetworkRequest &request, const QByteArray &verb, QIODevice *data = Q_NULLPTR);
 
 #ifndef QT_NO_BEARERMANAGEMENT
     void setConfiguration(const QNetworkConfiguration &config);
@@ -157,7 +157,7 @@ Q_SIGNALS:
 
 protected:
     virtual QNetworkReply *createRequest(Operation op, const QNetworkRequest &request,
-                                         QIODevice *outgoingData = 0);
+                                         QIODevice *outgoingData = Q_NULLPTR);
 
 protected Q_SLOTS:
     QStringList supportedSchemesImplementation() const;

src/network/access/qnetworkcookiejar.h

@@ -47,7 +47,7 @@ class Q_NETWORK_EXPORT QNetworkCookieJar: public QObject
 {
     Q_OBJECT
 public:
-    explicit QNetworkCookieJar(QObject *parent = 0);
+    explicit QNetworkCookieJar(QObject *parent = Q_NULLPTR);
     virtual ~QNetworkCookieJar();
 
     virtual QList<QNetworkCookie> cookiesForUrl(const QUrl &url) const;

src/network/access/qnetworkdiskcache.h

@@ -47,7 +47,7 @@ class Q_NETWORK_EXPORT QNetworkDiskCache : public QAbstractNetworkCache
     Q_OBJECT
 
 public:
-    explicit QNetworkDiskCache(QObject *parent = 0);
+    explicit QNetworkDiskCache(QObject *parent = Q_NULLPTR);
     ~QNetworkDiskCache();
 
     QString cacheDirectory() const;

src/network/access/qnetworkreply.h

@@ -161,7 +161,7 @@ Q_SIGNALS:
     void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);
 
 protected:
-    explicit QNetworkReply(QObject *parent = 0);
+    explicit QNetworkReply(QObject *parent = Q_NULLPTR);
     QNetworkReply(QNetworkReplyPrivate &dd, QObject *parent);
     virtual qint64 writeData(const char *data, qint64 len) Q_DECL_OVERRIDE;
 

src/network/bearer/qnetworkconfigmanager.h

@@ -59,7 +59,7 @@ public:
 
     Q_DECLARE_FLAGS(Capabilities, Capability)
 
-    explicit QNetworkConfigurationManager(QObject *parent = 0);
+    explicit QNetworkConfigurationManager(QObject *parent = Q_NULLPTR);
     virtual ~QNetworkConfigurationManager();
 
     QNetworkConfigurationManager::Capabilities capabilities() const;

src/network/bearer/qnetworksession.h

@@ -80,7 +80,7 @@ public:
 
     Q_DECLARE_FLAGS(UsagePolicies, UsagePolicy)
 
-    explicit QNetworkSession(const QNetworkConfiguration &connConfig, QObject *parent = 0);
+    explicit QNetworkSession(const QNetworkConfiguration &connConfig, QObject *parent = Q_NULLPTR);
     virtual ~QNetworkSession();
 
     bool isOpen() const;

src/network/kernel/qdnslookup.h

@@ -211,9 +211,9 @@ public:
     };
     Q_ENUM(Type)
 
-    explicit QDnsLookup(QObject *parent = 0);
-    QDnsLookup(Type type, const QString &name, QObject *parent = 0);
-    QDnsLookup(Type type, const QString &name, const QHostAddress &nameserver, QObject *parent = 0);
+    explicit QDnsLookup(QObject *parent = Q_NULLPTR);
+    QDnsLookup(Type type, const QString &name, QObject *parent = Q_NULLPTR);
+    QDnsLookup(Type type, const QString &name, const QHostAddress &nameserver, QObject *parent = Q_NULLPTR);
     ~QDnsLookup();
 
     Error error() const;

src/network/socket/qabstractsocket.h

@@ -213,7 +213,7 @@ protected:
     void setPeerAddress(const QHostAddress &address);
     void setPeerName(const QString &name);
 
-    QAbstractSocket(SocketType socketType, QAbstractSocketPrivate &dd, QObject *parent = 0);
+    QAbstractSocket(SocketType socketType, QAbstractSocketPrivate &dd, QObject *parent = Q_NULLPTR);
 
 private:
     Q_DECLARE_PRIVATE(QAbstractSocket)

src/network/socket/qlocalserver.h

@@ -64,7 +64,7 @@ public:
     };
     Q_DECLARE_FLAGS(SocketOptions, SocketOption)
 
-    explicit QLocalServer(QObject *parent = 0);
+    explicit QLocalServer(QObject *parent = Q_NULLPTR);
     ~QLocalServer();
 
     void close();
@@ -80,7 +80,7 @@ public:
     static bool removeServer(const QString &name);
     QAbstractSocket::SocketError serverError() const;
     void setMaxPendingConnections(int numConnections);
-    bool waitForNewConnection(int msec = 0, bool *timedOut = 0);
+    bool waitForNewConnection(int msec = 0, bool *timedOut = Q_NULLPTR);
 
     void setSocketOptions(SocketOptions options);
     SocketOptions socketOptions() const;

src/network/socket/qlocalsocket.h

@@ -73,7 +73,7 @@ public:
         ClosingState = QAbstractSocket::ClosingState
     };
 
-    QLocalSocket(QObject *parent = 0);
+    QLocalSocket(QObject *parent = Q_NULLPTR);
     ~QLocalSocket();
 
     void connectToServer(OpenMode openMode = ReadWrite);

src/network/socket/qtcpserver.h

@@ -51,7 +51,7 @@ class Q_NETWORK_EXPORT QTcpServer : public QObject
 {
     Q_OBJECT
 public:
-    explicit QTcpServer(QObject *parent = 0);
+    explicit QTcpServer(QObject *parent = Q_NULLPTR);
     virtual ~QTcpServer();
 
     bool listen(const QHostAddress &address = QHostAddress::Any, quint16 port = 0);
@@ -68,7 +68,7 @@ public:
     qintptr socketDescriptor() const;
     bool setSocketDescriptor(qintptr socketDescriptor);
 
-    bool waitForNewConnection(int msec = 0, bool *timedOut = 0);
+    bool waitForNewConnection(int msec = 0, bool *timedOut = Q_NULLPTR);
     virtual bool hasPendingConnections() const;
     virtual QTcpSocket *nextPendingConnection();
 
@@ -87,7 +87,7 @@ protected:
     virtual void incomingConnection(qintptr handle);
     void addPendingConnection(QTcpSocket* socket);
 
-    QTcpServer(QTcpServerPrivate &dd, QObject *parent = 0);
+    QTcpServer(QTcpServerPrivate &dd, QObject *parent = Q_NULLPTR);
 
 Q_SIGNALS:
     void newConnection();

src/network/socket/qtcpsocket.h

@@ -46,13 +46,13 @@ class Q_NETWORK_EXPORT QTcpSocket : public QAbstractSocket
 {
     Q_OBJECT
 public:
-    explicit QTcpSocket(QObject *parent = 0);
+    explicit QTcpSocket(QObject *parent = Q_NULLPTR);
     virtual ~QTcpSocket();
 
 protected:
-    QTcpSocket(QTcpSocketPrivate &dd, QObject *parent = 0);
+    QTcpSocket(QTcpSocketPrivate &dd, QObject *parent = Q_NULLPTR);
     QTcpSocket(QAbstractSocket::SocketType socketType, QTcpSocketPrivate &dd,
-               QObject *parent = 0);
+               QObject *parent = Q_NULLPTR);
 
 private:
     Q_DISABLE_COPY(QTcpSocket)

src/network/socket/qudpsocket.h

@@ -49,7 +49,7 @@ class Q_NETWORK_EXPORT QUdpSocket : public QAbstractSocket
 {
     Q_OBJECT
 public:
-    explicit QUdpSocket(QObject *parent = 0);
+    explicit QUdpSocket(QObject *parent = Q_NULLPTR);
     virtual ~QUdpSocket();
 
 #ifndef QT_NO_NETWORKINTERFACE
@@ -66,7 +66,7 @@ public:
 
     bool hasPendingDatagrams() const;
     qint64 pendingDatagramSize() const;
-    qint64 readDatagram(char *data, qint64 maxlen, QHostAddress *host = 0, quint16 *port = 0);
+    qint64 readDatagram(char *data, qint64 maxlen, QHostAddress *host = Q_NULLPTR, quint16 *port = Q_NULLPTR);
     qint64 writeDatagram(const char *data, qint64 len, const QHostAddress &host, quint16 port);
     inline qint64 writeDatagram(const QByteArray &datagram, const QHostAddress &host, quint16 port)
         { return writeDatagram(datagram.constData(), datagram.size(), host, port); }

src/network/ssl/qsslcertificate.h

@@ -147,7 +147,7 @@ public:
 
     static bool importPkcs12(QIODevice *device,
                              QSslKey *key, QSslCertificate *cert,
-                             QList<QSslCertificate> *caCertificates=0,
+                             QList<QSslCertificate> *caCertificates = Q_NULLPTR,
                              const QByteArray &passPhrase=QByteArray());
 
     Qt::HANDLE handle() const;

src/network/ssl/qsslsocket.h

@@ -72,7 +72,7 @@ public:
         AutoVerifyPeer
     };
 
-    explicit QSslSocket(QObject *parent = 0);
+    explicit QSslSocket(QObject *parent = Q_NULLPTR);
     ~QSslSocket();
     void resume() Q_DECL_OVERRIDE; // to continue after proxy authentication required, SSL errors etc.