Add d-pointers to new builder classes

Change-Id: I303795f8b1cf627986588541db129ce2bfb787ca
Reviewed-by: Karsten Heimrich <karsten.heimrich@qt.io>

14 files changed, 364 insertions, 47 deletions

diff --git a/src/knx/netip/qknxnetiproutingsystembroadcast.cpp b/src/knx/netip/qknxnetiproutingsystembroadcast.cpp
index 2bbf250..6b3f7fe 100644
--- a/src/knx/netip/qknxnetiproutingsystembroadcast.cpp
+++ b/src/knx/netip/qknxnetiproutingsystembroadcast.cpp
@@ -85,6 +85,15 @@ QT_BEGIN_NAMESPACE
     \internal
 */
 
+class QKnxNetIpRoutingSystemBroadcastBuilderPrivate : public QSharedData
+{
+public:
+    QKnxNetIpRoutingSystemBroadcastBuilderPrivate() = default;
+    ~QKnxNetIpRoutingSystemBroadcastBuilderPrivate() = default;
+
+    QKnxLinkLayerFrame m_llf;
+};
+
 namespace QKnxPrivate
 {
     static bool isCemiValid(const QKnxLinkLayerFrame &linkFrame)
@@ -161,6 +170,18 @@ QKnxNetIpRoutingSystemBroadcastProxy::Builder QKnxNetIpRoutingSystemBroadcastPro
 */
 
 /*!
+    Creates a new empty system broadcast frame builder object.
+*/
+QKnxNetIpRoutingSystemBroadcastProxy::Builder::Builder()
+    : d_ptr(new QKnxNetIpRoutingSystemBroadcastBuilderPrivate)
+{}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+QKnxNetIpRoutingSystemBroadcastProxy::Builder::~Builder() = default;
+
+/*!
     Sets the cEMI frame containing the routing system broadcast message to
     \a cemi.
 */
@@ -168,7 +189,7 @@ QKnxNetIpRoutingSystemBroadcastProxy::Builder &
     QKnxNetIpRoutingSystemBroadcastProxy::Builder::setCemi(const QKnxLinkLayerFrame &cemi)
 {
     if (QKnxPrivate::isCemiValid(cemi))
-        m_llf = cemi;
+        d_ptr->m_llf = cemi;
     return *this;
 }
 
@@ -177,9 +198,26 @@ QKnxNetIpRoutingSystemBroadcastProxy::Builder &
 */
 QKnxNetIpFrame QKnxNetIpRoutingSystemBroadcastProxy::Builder::create() const
 {
-    if (!m_llf.isValid())
+    if (!d_ptr->m_llf.isValid())
         return {};
-    return { QKnxNetIp::ServiceType::RoutingSystemBroadcast, m_llf.bytes() };
+    return { QKnxNetIp::ServiceType::RoutingSystemBroadcast, d_ptr->m_llf.bytes() };
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+QKnxNetIpRoutingSystemBroadcastProxy::Builder::Builder(const Builder &other)
+    : d_ptr(other.d_ptr)
+{}
+
+/*!
+    Assigns the specified \a other to this object.
+*/
+QKnxNetIpRoutingSystemBroadcastProxy::Builder &
+    QKnxNetIpRoutingSystemBroadcastProxy::Builder::operator=(const Builder &other)
+{
+    d_ptr = other.d_ptr;
+    return *this;
 }
 
 QT_END_NAMESPACE
diff --git a/src/knx/netip/qknxnetiproutingsystembroadcast.h b/src/knx/netip/qknxnetiproutingsystembroadcast.h
index 28b690c..b74d861 100644
--- a/src/knx/netip/qknxnetiproutingsystembroadcast.h
+++ b/src/knx/netip/qknxnetiproutingsystembroadcast.h
@@ -37,6 +37,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QKnxNetIpRoutingSystemBroadcastBuilderPrivate;
 class Q_KNX_EXPORT QKnxNetIpRoutingSystemBroadcastProxy final
 {
 public:
@@ -53,12 +54,18 @@ public:
     class Q_KNX_EXPORT Builder final
     {
     public:
+        Builder();
+        ~Builder();
+
         Builder &setCemi(const QKnxLinkLayerFrame &cemi);
 
         QKnxNetIpFrame create() const;
 
+        Builder(const Builder &other);
+        Builder &operator=(const Builder &other);
+
     private:
-        QKnxLinkLayerFrame m_llf;
+        QSharedDataPointer<QKnxNetIpRoutingSystemBroadcastBuilderPrivate> d_ptr;
     };
     static QKnxNetIpRoutingSystemBroadcastProxy::Builder builder();
 
diff --git a/src/knx/netip/qknxnetipsecuredservicefamiliesdib.cpp b/src/knx/netip/qknxnetipsecuredservicefamiliesdib.cpp
index 9a6ef25..770e6f3 100644
--- a/src/knx/netip/qknxnetipsecuredservicefamiliesdib.cpp
+++ b/src/knx/netip/qknxnetipsecuredservicefamiliesdib.cpp
@@ -116,6 +116,15 @@ QT_BEGIN_NAMESPACE
     \fn QKnxNetIpSecuredServiceFamiliesDibProxy::QKnxNetIpSecuredServiceFamiliesDibProxy(const QKnxNetIpDib &&)
 */
 
+class QKnxNetIpSecuredServiceFamiliesDibBuilderPrivate : public QSharedData
+{
+public:
+    QKnxNetIpSecuredServiceFamiliesDibBuilderPrivate() = default;
+    ~QKnxNetIpSecuredServiceFamiliesDibBuilderPrivate() = default;
+
+    QVector<QKnxSecuredServiceInfo> m_infos;
+};
+
 /*!
     Constructs a proxy object with the specified KNXnet/IP DIB structure
     \a dib to read the supported service families and security versions.
@@ -198,15 +207,27 @@ QKnxNetIpSecuredServiceFamiliesDibProxy::Builder QKnxNetIpSecuredServiceFamilies
 */
 
 /*!
+    Constructs a KnxNet/IP secured service families dib builder.
+*/
+QKnxNetIpSecuredServiceFamiliesDibProxy::Builder::Builder()
+    : d_ptr(new QKnxNetIpSecuredServiceFamiliesDibBuilderPrivate)
+{}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+QKnxNetIpSecuredServiceFamiliesDibProxy::Builder::~Builder() = default;
+
+/*!
     Sets the supported service families and versions of the KNXnet/IP DIB
     structure to \a infos and returns a reference to the builder.
 */
 QKnxNetIpSecuredServiceFamiliesDibProxy::Builder &QKnxNetIpSecuredServiceFamiliesDibProxy::
     Builder::setServiceInfos(const QVector<QKnxSecuredServiceInfo> &infos)
 {
-    m_infos = infos;
+    d_ptr->m_infos = infos;
 
-    std::sort(m_infos.begin(), m_infos.end(),
+    std::sort(d_ptr->m_infos.begin(), d_ptr->m_infos.end(),
         [](const QKnxSecuredServiceInfo &a, const QKnxSecuredServiceInfo &b) {
             if (a.ServiceFamily < b.ServiceFamily)
                 return true;
@@ -216,11 +237,11 @@ QKnxNetIpSecuredServiceFamiliesDibProxy::Builder &QKnxNetIpSecuredServiceFamilie
             }
             return false;
     });
-    m_infos.erase(std::unique(m_infos.begin(), m_infos.end(),
+    d_ptr->m_infos.erase(std::unique(d_ptr->m_infos.begin(), d_ptr->m_infos.end(),
         [](const QKnxSecuredServiceInfo &a, const QKnxSecuredServiceInfo &b) {
         return a.ServiceFamily == b.ServiceFamily
             && a.RequiredSecurityVersion == b.RequiredSecurityVersion;
-    }), m_infos.end());
+    }), d_ptr->m_infos.end());
 
     return *this;
 }
@@ -236,9 +257,26 @@ QKnxNetIpSecuredServiceFamiliesDibProxy::Builder &QKnxNetIpSecuredServiceFamilie
 QKnxNetIpDib QKnxNetIpSecuredServiceFamiliesDibProxy::Builder::create() const
 {
     QKnxByteArray bytes;
-    for (const auto &info : qAsConst(m_infos))
+    for (const auto &info : qAsConst(d_ptr->m_infos))
         bytes += { quint8(info.ServiceFamily), info.RequiredSecurityVersion };
     return { QKnxNetIp::DescriptionType::SecuredServices, bytes };
 }
 
+/*!
+    Constructs a copy of \a other.
+*/
+QKnxNetIpSecuredServiceFamiliesDibProxy::Builder::Builder(const Builder &other)
+    : d_ptr(other.d_ptr)
+{}
+
+/*!
+    Assigns the specified \a other to this object.
+*/
+QKnxNetIpSecuredServiceFamiliesDibProxy::Builder &
+    QKnxNetIpSecuredServiceFamiliesDibProxy::Builder::operator=(const Builder &other)
+{
+    d_ptr = other.d_ptr;
+    return *this;
+}
+
 QT_END_NAMESPACE
diff --git a/src/knx/netip/qknxnetipsecuredservicefamiliesdib.h b/src/knx/netip/qknxnetipsecuredservicefamiliesdib.h
index 1a34970..b01dd55 100644
--- a/src/knx/netip/qknxnetipsecuredservicefamiliesdib.h
+++ b/src/knx/netip/qknxnetipsecuredservicefamiliesdib.h
@@ -41,6 +41,7 @@ struct Q_KNX_EXPORT QKnxSecuredServiceInfo
     quint8 RequiredSecurityVersion;
 };
 
+class QKnxNetIpSecuredServiceFamiliesDibBuilderPrivate;
 class Q_KNX_EXPORT QKnxNetIpSecuredServiceFamiliesDibProxy final
 {
 public:
@@ -58,12 +59,18 @@ public:
     class Q_KNX_EXPORT Builder final
     {
     public:
+        Builder();
+        ~Builder();
+
         Builder &setServiceInfos(const QVector<QKnxSecuredServiceInfo> &infos);
 
         QKnxNetIpDib create() const;
 
+        Builder(const Builder &other);
+        Builder &operator=(const Builder &other);
+
     private:
-        QVector<QKnxSecuredServiceInfo> m_infos;
+        QSharedDataPointer<QKnxNetIpSecuredServiceFamiliesDibBuilderPrivate> d_ptr;
     };
     static QKnxNetIpSecuredServiceFamiliesDibProxy::Builder builder();
 
diff --git a/src/knx/netip/qknxnetipsessionauthenticate.cpp b/src/knx/netip/qknxnetipsessionauthenticate.cpp
index af6c368..46300f5 100644
--- a/src/knx/netip/qknxnetipsessionauthenticate.cpp
+++ b/src/knx/netip/qknxnetipsessionauthenticate.cpp
@@ -181,6 +181,28 @@ QKnxNetIpSessionAuthenticateProxy::Builder QKnxNetIpSessionAuthenticateProxy::bu
     \sa QKnxCryptographicEngine
 */
 
+class QKnxNetIpSessionAuthenticateBuilderPrivate : public QSharedData
+{
+public:
+    QKnxNetIpSessionAuthenticateBuilderPrivate() = default;
+    ~QKnxNetIpSessionAuthenticateBuilderPrivate() = default;
+
+    quint16 m_id { 0 };
+    QKnxByteArray m_authCode;
+};
+
+/*!
+    Creates a new empty session authenticate frame builder.
+*/
+QKnxNetIpSessionAuthenticateProxy::Builder::Builder()
+    : d_ptr(new QKnxNetIpSessionAuthenticateBuilderPrivate)
+{}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+QKnxNetIpSessionAuthenticateProxy::Builder::~Builder() = default;
+
 /*!
     Sets the user ID of the KNXnet/IP session authentication frame to \a userId
     and returns a reference to the builder.
@@ -191,7 +213,7 @@ QKnxNetIpSessionAuthenticateProxy::Builder QKnxNetIpSessionAuthenticateProxy::bu
 QKnxNetIpSessionAuthenticateProxy::Builder &
     QKnxNetIpSessionAuthenticateProxy::Builder::setUserId(quint16 userId)
 {
-    m_id = userId;
+    d_ptr->m_id = userId;
     return *this;
 }
 
@@ -203,7 +225,7 @@ QKnxNetIpSessionAuthenticateProxy::Builder &
 QKnxNetIpSessionAuthenticateProxy::Builder &
     QKnxNetIpSessionAuthenticateProxy::Builder::setMessageAuthenticationCode(const QKnxByteArray &data)
 {
-    m_authCode = data;
+    d_ptr->m_authCode = data;
     return *this;
 }
 
@@ -217,11 +239,28 @@ QKnxNetIpSessionAuthenticateProxy::Builder &
 */
 QKnxNetIpFrame QKnxNetIpSessionAuthenticateProxy::Builder::create() const
 {
-    if (m_id == 0 || m_id >= 0x80 ||  m_authCode.size() != 16)
+    if (d_ptr->m_id == 0 || d_ptr->m_id >= 0x80 ||  d_ptr->m_authCode.size() != 16)
         return { QKnxNetIp::ServiceType::SessionAuthenticate };
 
-    return { QKnxNetIp::ServiceType::SessionAuthenticate, QKnxUtils::QUint16::bytes(m_id)
-        + m_authCode };
+    return { QKnxNetIp::ServiceType::SessionAuthenticate, QKnxUtils::QUint16::bytes(d_ptr->m_id)
+        + d_ptr->m_authCode };
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+QKnxNetIpSessionAuthenticateProxy::Builder::Builder(const Builder &other)
+    : d_ptr(other.d_ptr)
+{}
+
+/*!
+    Assigns the specified \a other to this object.
+*/
+QKnxNetIpSessionAuthenticateProxy::Builder &
+    QKnxNetIpSessionAuthenticateProxy::Builder::operator=(const Builder &other)
+{
+    d_ptr = other.d_ptr;
+    return *this;
 }
 
 QT_END_NAMESPACE
diff --git a/src/knx/netip/qknxnetipsessionauthenticate.h b/src/knx/netip/qknxnetipsessionauthenticate.h
index 35c5a93..97884fd 100644
--- a/src/knx/netip/qknxnetipsessionauthenticate.h
+++ b/src/knx/netip/qknxnetipsessionauthenticate.h
@@ -35,6 +35,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QKnxNetIpSessionAuthenticateBuilderPrivate;
 class Q_KNX_EXPORT QKnxNetIpSessionAuthenticateProxy final
 {
 public:
@@ -52,14 +53,19 @@ public:
     class Q_KNX_EXPORT Builder final
     {
     public:
+        Builder();
+        ~Builder();
+
         Builder &setUserId(quint16 userId);
         Builder &setMessageAuthenticationCode(const QKnxByteArray &data);
 
         QKnxNetIpFrame create() const;
 
+        Builder(const Builder &other);
+        Builder &operator=(const Builder &other);
+
     private:
-        quint16 m_id { 0 };
-        QKnxByteArray m_authCode;
+        QSharedDataPointer<QKnxNetIpSessionAuthenticateBuilderPrivate> d_ptr;
     };
     static QKnxNetIpSessionAuthenticateProxy::Builder builder();
 
diff --git a/src/knx/netip/qknxnetipsessionrequest.cpp b/src/knx/netip/qknxnetipsessionrequest.cpp
index 297011a..2f28860 100644
--- a/src/knx/netip/qknxnetipsessionrequest.cpp
+++ b/src/knx/netip/qknxnetipsessionrequest.cpp
@@ -178,6 +178,28 @@ QKnxNetIpSessionRequestProxy::Builder QKnxNetIpSessionRequestProxy::builder()
     \endcode
 */
 
+class QKnxNetIpSessionRequestBuilderPrivate : public QSharedData
+{
+public:
+    QKnxNetIpSessionRequestBuilderPrivate() = default;
+    ~QKnxNetIpSessionRequestBuilderPrivate() = default;
+
+    QKnxNetIpHpai m_hpai;
+    QKnxByteArray m_publicKey;
+};
+
+/*!
+    Creates a new empty session request frame builder object.
+*/
+QKnxNetIpSessionRequestProxy::Builder::Builder()
+    : d_ptr(new QKnxNetIpSessionRequestBuilderPrivate)
+{}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+QKnxNetIpSessionRequestProxy::Builder::~Builder() = default;
+
 /*!
     Sets the control endpoint of the KNXnet/IP session request frame to \a hpai
     and returns a reference to the builder.
@@ -185,7 +207,7 @@ QKnxNetIpSessionRequestProxy::Builder QKnxNetIpSessionRequestProxy::builder()
 QKnxNetIpSessionRequestProxy::Builder &
     QKnxNetIpSessionRequestProxy::Builder::setControlEndpoint(const QKnxNetIpHpai &hpai)
 {
-    m_hpai = hpai;
+    d_ptr->m_hpai = hpai;
     return *this;
 }
 
@@ -198,7 +220,7 @@ QKnxNetIpSessionRequestProxy::Builder &
 QKnxNetIpSessionRequestProxy::Builder &
     QKnxNetIpSessionRequestProxy::Builder::setPublicKey(const QKnxByteArray &publicKey)
 {
-    m_publicKey = publicKey;
+    d_ptr->m_publicKey = publicKey;
     return *this;
 }
 
@@ -212,9 +234,26 @@ QKnxNetIpSessionRequestProxy::Builder &
 */
 QKnxNetIpFrame QKnxNetIpSessionRequestProxy::Builder::create() const
 {
-    if (m_hpai.isValid() && m_publicKey.size() == 32)
-        return { QKnxNetIp::ServiceType::SessionRequest, m_hpai.bytes() + m_publicKey };
+    if (d_ptr->m_hpai.isValid() && d_ptr->m_publicKey.size() == 32)
+        return { QKnxNetIp::ServiceType::SessionRequest, d_ptr->m_hpai.bytes() + d_ptr->m_publicKey };
     return { QKnxNetIp::ServiceType::SessionRequest };
 }
 
+/*!
+    Constructs a copy of \a other.
+*/
+QKnxNetIpSessionRequestProxy::Builder::Builder(const Builder &other)
+    : d_ptr(other.d_ptr)
+{}
+
+/*!
+    Assigns the specified \a other to this object.
+*/
+QKnxNetIpSessionRequestProxy::Builder &
+    QKnxNetIpSessionRequestProxy::Builder::operator=(const Builder &other)
+{
+    d_ptr = other.d_ptr;
+    return *this;
+}
+
 QT_END_NAMESPACE
diff --git a/src/knx/netip/qknxnetipsessionrequest.h b/src/knx/netip/qknxnetipsessionrequest.h
index f547330..a2a07ad 100644
--- a/src/knx/netip/qknxnetipsessionrequest.h
+++ b/src/knx/netip/qknxnetipsessionrequest.h
@@ -36,6 +36,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QKnxNetIpSessionRequestBuilderPrivate;
 class Q_KNX_EXPORT QKnxNetIpSessionRequestProxy final
 {
 public:
@@ -53,14 +54,19 @@ public:
     class Q_KNX_EXPORT Builder final
     {
     public:
+        Builder();
+        ~Builder();
+
         Builder &setControlEndpoint(const QKnxNetIpHpai &hpai);
         Builder &setPublicKey(const QKnxByteArray &publicKey);
 
         QKnxNetIpFrame create() const;
 
+        Builder(const Builder &other);
+        Builder &operator=(const Builder &other);
+
     private:
-        QKnxNetIpHpai m_hpai;
-        QKnxByteArray m_publicKey;
+        QSharedDataPointer<QKnxNetIpSessionRequestBuilderPrivate> d_ptr;
     };
     static QKnxNetIpSessionRequestProxy::Builder builder();
 
diff --git a/src/knx/netip/qknxnetipsessionresponse.cpp b/src/knx/netip/qknxnetipsessionresponse.cpp
index 7c01050..b9ea89e 100644
--- a/src/knx/netip/qknxnetipsessionresponse.cpp
+++ b/src/knx/netip/qknxnetipsessionresponse.cpp
@@ -184,6 +184,29 @@ QKnxNetIpSessionResponseProxy::Builder QKnxNetIpSessionResponseProxy::builder()
     \sa QKnxCryptographicEngine
 */
 
+class QKnxNetIpSessionResponseBuilderPrivate : public QSharedData
+{
+public:
+    QKnxNetIpSessionResponseBuilderPrivate() = default;
+    ~QKnxNetIpSessionResponseBuilderPrivate() = default;
+
+    qint32 m_id { -1 };
+    QKnxByteArray m_publicKey;
+    QKnxByteArray m_authCode;
+};
+
+/*!
+    Creates a new empty session response builder object.
+*/
+QKnxNetIpSessionResponseProxy::Builder::Builder()
+    : d_ptr(new QKnxNetIpSessionResponseBuilderPrivate)
+{}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+QKnxNetIpSessionResponseProxy::Builder::~Builder() = default;
+
 /*!
     Sets the secure session ID of the KNXnet/IP session response frame to
     \a sessionId and returns a reference to the builder.
@@ -191,7 +214,7 @@ QKnxNetIpSessionResponseProxy::Builder QKnxNetIpSessionResponseProxy::builder()
 QKnxNetIpSessionResponseProxy::Builder &
     QKnxNetIpSessionResponseProxy::Builder::setSecureSessionId(quint16 sessionId)
 {
-    m_id = sessionId;
+    d_ptr->m_id = sessionId;
     return *this;
 }
 
@@ -203,7 +226,7 @@ QKnxNetIpSessionResponseProxy::Builder &
 QKnxNetIpSessionResponseProxy::Builder &
     QKnxNetIpSessionResponseProxy::Builder::setPublicKey(const QKnxByteArray &publicKey)
 {
-    m_publicKey = publicKey;
+    d_ptr->m_publicKey = publicKey;
     return *this;
 }
 
@@ -215,7 +238,7 @@ QKnxNetIpSessionResponseProxy::Builder &
 QKnxNetIpSessionResponseProxy::Builder &
     QKnxNetIpSessionResponseProxy::Builder::setMessageAuthenticationCode(const QKnxByteArray &data)
 {
-    m_authCode = data;
+    d_ptr->m_authCode = data;
     return *this;
 }
 
@@ -229,10 +252,28 @@ QKnxNetIpSessionResponseProxy::Builder &
 */
 QKnxNetIpFrame QKnxNetIpSessionResponseProxy::Builder::create() const
 {
-    if (m_id < 0 || m_publicKey.size() != 32 || m_authCode.size() != 16)
+    if (d_ptr->m_id < 0 || d_ptr->m_publicKey.size() != 32 || d_ptr->m_authCode.size() != 16)
         return { QKnxNetIp::ServiceType::SessionResponse };
-    return { QKnxNetIp::ServiceType::SessionResponse, QKnxUtils::QUint16::bytes(m_id) + m_publicKey
-        + m_authCode };
+
+    return { QKnxNetIp::ServiceType::SessionResponse, QKnxUtils::QUint16::bytes(d_ptr->m_id)
+        + d_ptr->m_publicKey + d_ptr->m_authCode };
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+QKnxNetIpSessionResponseProxy::Builder::Builder(const Builder &other)
+    : d_ptr(other.d_ptr)
+{}
+
+/*!
+    Assigns the specified \a other to this object.
+*/
+QKnxNetIpSessionResponseProxy::Builder &
+    QKnxNetIpSessionResponseProxy::Builder::operator=(const Builder &other)
+{
+    d_ptr = other.d_ptr;
+    return *this;
 }
 
 QT_END_NAMESPACE
diff --git a/src/knx/netip/qknxnetipsessionresponse.h b/src/knx/netip/qknxnetipsessionresponse.h
index 0ed3693..c2eecf6 100644
--- a/src/knx/netip/qknxnetipsessionresponse.h
+++ b/src/knx/netip/qknxnetipsessionresponse.h
@@ -36,6 +36,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QKnxNetIpSessionResponseBuilderPrivate;
 class Q_KNX_EXPORT QKnxNetIpSessionResponseProxy final
 {
 public:
@@ -54,16 +55,20 @@ public:
     class Q_KNX_EXPORT Builder final
     {
     public:
+        Builder();
+        ~Builder();
+
         Builder &setSecureSessionId(quint16 sessionId);
         Builder &setPublicKey(const QKnxByteArray &publicKey);
         Builder &setMessageAuthenticationCode(const QKnxByteArray &data);
 
         QKnxNetIpFrame create() const;
 
+        Builder(const Builder &other);
+        Builder &operator=(const Builder &other);
+
     private:
-        qint32 m_id { -1 };
-        QKnxByteArray m_publicKey;
-        QKnxByteArray m_authCode;
+        QSharedDataPointer<QKnxNetIpSessionResponseBuilderPrivate> d_ptr;
     };
     static QKnxNetIpSessionResponseProxy::Builder builder();
 
diff --git a/src/knx/netip/qknxnetipsessionstatus.cpp b/src/knx/netip/qknxnetipsessionstatus.cpp
index 08df506..0b79ad6 100644
--- a/src/knx/netip/qknxnetipsessionstatus.cpp
+++ b/src/knx/netip/qknxnetipsessionstatus.cpp
@@ -158,6 +158,27 @@ QKnxNetIpSessionStatusProxy::Builder QKnxNetIpSessionStatusProxy::builder()
     \endcode
 */
 
+class QKnxNetIpSessionStatusBuilderPrivate : public QSharedData
+{
+public:
+    QKnxNetIpSessionStatusBuilderPrivate() = default;
+    ~QKnxNetIpSessionStatusBuilderPrivate() = default;
+
+    QKnxNetIp::SecureSessionStatus m_status = QKnxNetIp::SecureSessionStatus::Unknown;
+};
+
+/*!
+    Creates a new empty session status frame builder object.
+*/
+QKnxNetIpSessionStatusProxy::Builder::Builder()
+    : d_ptr(new QKnxNetIpSessionStatusBuilderPrivate)
+{}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+QKnxNetIpSessionStatusProxy::Builder::~Builder() = default;
+
 /*!
     Sets the status of the KNXnet/IP session status frame to \a status
     and returns a reference to the builder.
@@ -165,7 +186,7 @@ QKnxNetIpSessionStatusProxy::Builder QKnxNetIpSessionStatusProxy::builder()
 QKnxNetIpSessionStatusProxy::Builder &
     QKnxNetIpSessionStatusProxy::Builder::setStatus(QKnxNetIp::SecureSessionStatus status)
 {
-    m_status = status;
+    d_ptr->m_status = status;
     return *this;
 }
 
@@ -179,11 +200,28 @@ QKnxNetIpSessionStatusProxy::Builder &
 */
 QKnxNetIpFrame QKnxNetIpSessionStatusProxy::Builder::create() const
 {
-    if (m_status > QKnxNetIp::SecureSessionStatus::Close)
+    if (d_ptr->m_status > QKnxNetIp::SecureSessionStatus::Close)
         return { QKnxNetIp::ServiceType::SessionStatus };
 
     return { QKnxNetIp::ServiceType::SessionStatus,
-        QKnxUtils::QUint16::bytes(quint16(m_status) << 8) };
+        QKnxUtils::QUint16::bytes(quint16(d_ptr->m_status) << 8) };
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+QKnxNetIpSessionStatusProxy::Builder::Builder(const Builder &other)
+    : d_ptr(other.d_ptr)
+{}
+
+/*!
+    Assigns the specified \a other to this object.
+*/
+QKnxNetIpSessionStatusProxy::Builder &
+    QKnxNetIpSessionStatusProxy::Builder::operator=(const Builder &other)
+{
+    d_ptr = other.d_ptr;
+    return *this;
 }
 
 QT_END_NAMESPACE
diff --git a/src/knx/netip/qknxnetipsessionstatus.h b/src/knx/netip/qknxnetipsessionstatus.h
index ecb97c1..ec9616e 100644
--- a/src/knx/netip/qknxnetipsessionstatus.h
+++ b/src/knx/netip/qknxnetipsessionstatus.h
@@ -35,6 +35,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QKnxNetIpSessionStatusBuilderPrivate;
 class Q_KNX_EXPORT QKnxNetIpSessionStatusProxy final
 {
 public:
@@ -50,12 +51,18 @@ public:
     class Q_KNX_EXPORT Builder final
     {
     public:
+        Builder();
+        ~Builder();
+
         Builder &setStatus(QKnxNetIp::SecureSessionStatus status);
 
         QKnxNetIpFrame create() const;
 
+        Builder(const Builder &other);
+        Builder &operator=(const Builder &other);
+
     private:
-        QKnxNetIp::SecureSessionStatus m_status = QKnxNetIp::SecureSessionStatus::Unknown;
+        QSharedDataPointer<QKnxNetIpSessionStatusBuilderPrivate> d_ptr;
     };
     static QKnxNetIpSessionStatusProxy::Builder builder();
 
diff --git a/src/knx/netip/qknxnetiptimernotify.cpp b/src/knx/netip/qknxnetiptimernotify.cpp
index 18ea35b..495189b 100644
--- a/src/knx/netip/qknxnetiptimernotify.cpp
+++ b/src/knx/netip/qknxnetiptimernotify.cpp
@@ -192,6 +192,30 @@ QKnxNetIpTimerNotifyProxy::Builder QKnxNetIpTimerNotifyProxy::builder()
     \sa QKnxCryptographicEngine
 */
 
+class QKnxNetIpTimerNotifyBuilderPrivate : public QSharedData
+{
+public:
+    QKnxNetIpTimerNotifyBuilderPrivate() = default;
+    ~QKnxNetIpTimerNotifyBuilderPrivate() = default;
+
+    quint64 m_timer { Q_UINT48_MAX + 1 };
+    QKnxByteArray m_serial;
+    qint32 m_tag { -1 };
+    QKnxByteArray m_authCode;
+};
+
+/*!
+    Creates a new empty timer notify frame builder object.
+*/
+QKnxNetIpTimerNotifyProxy::Builder::Builder()
+    : d_ptr(new QKnxNetIpTimerNotifyBuilderPrivate)
+{}
+
+/*!
+    Destroys the object and frees any allocated resources.
+*/
+QKnxNetIpTimerNotifyProxy::Builder::~Builder() = default;
+
 /*!
     Sets the timer value to \a timerValue and returns a reference to the
     builder.
@@ -203,7 +227,7 @@ QKnxNetIpTimerNotifyProxy::Builder QKnxNetIpTimerNotifyProxy::builder()
 QKnxNetIpTimerNotifyProxy::Builder &
     QKnxNetIpTimerNotifyProxy::Builder::setTimerValue(quint48 timerValue)
 {
-    m_timer = timerValue;
+    d_ptr->m_timer = timerValue;
     return *this;
 }
 
@@ -216,7 +240,7 @@ QKnxNetIpTimerNotifyProxy::Builder &
 QKnxNetIpTimerNotifyProxy::Builder &
     QKnxNetIpTimerNotifyProxy::Builder::setSerialNumber(const QKnxByteArray &serialNumber)
 {
-    m_serial = serialNumber;
+    d_ptr->m_serial = serialNumber;
     return *this;
 }
 
@@ -230,7 +254,7 @@ QKnxNetIpTimerNotifyProxy::Builder &
 */
 QKnxNetIpTimerNotifyProxy::Builder &QKnxNetIpTimerNotifyProxy::Builder::setMessageTag(quint16 tag)
 {
-    m_tag = tag;
+    d_ptr->m_tag = tag;
     return *this;
 }
 
@@ -242,7 +266,7 @@ QKnxNetIpTimerNotifyProxy::Builder &QKnxNetIpTimerNotifyProxy::Builder::setMessa
 QKnxNetIpTimerNotifyProxy::Builder &
     QKnxNetIpTimerNotifyProxy::Builder::setMessageAuthenticationCode(const QKnxByteArray &data)
 {
-    m_authCode = data;
+    d_ptr->m_authCode = data;
     return *this;
 }
 
@@ -256,11 +280,29 @@ QKnxNetIpTimerNotifyProxy::Builder &
 */
 QKnxNetIpFrame QKnxNetIpTimerNotifyProxy::Builder::create() const
 {
-    if (m_timer <= Q_UINT48_MAX && m_serial.size() == 6 && m_tag >= 0 && m_authCode.size() == 16) {
-        return { QKnxNetIp::ServiceType::TimerNotify, QKnxUtils::QUint48::bytes(m_timer)
-            + m_serial + QKnxUtils::QUint16::bytes(m_tag) + m_authCode };
+    if (d_ptr->m_timer <= Q_UINT48_MAX && d_ptr->m_serial.size() == 6 && d_ptr->m_tag >= 0
+        && d_ptr->m_authCode.size() == 16) {
+            return { QKnxNetIp::ServiceType::TimerNotify, QKnxUtils::QUint48::bytes(d_ptr->m_timer)
+                + d_ptr->m_serial + QKnxUtils::QUint16::bytes(d_ptr->m_tag) + d_ptr->m_authCode };
     }
     return { QKnxNetIp::ServiceType::TimerNotify };
 }
 
+/*!
+    Constructs a copy of \a other.
+*/
+QKnxNetIpTimerNotifyProxy::Builder::Builder(const Builder &other)
+    : d_ptr(other.d_ptr)
+{}
+
+/*!
+    Assigns the specified \a other to this object.
+*/
+QKnxNetIpTimerNotifyProxy::Builder &
+    QKnxNetIpTimerNotifyProxy::Builder::operator=(const Builder &other)
+{
+    d_ptr = other.d_ptr;
+    return *this;
+}
+
 QT_END_NAMESPACE
diff --git a/src/knx/netip/qknxnetiptimernotify.h b/src/knx/netip/qknxnetiptimernotify.h
index 298e568..5b94acf 100644
--- a/src/knx/netip/qknxnetiptimernotify.h
+++ b/src/knx/netip/qknxnetiptimernotify.h
@@ -35,6 +35,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QKnxNetIpTimerNotifyBuilderPrivate;
 class Q_KNX_EXPORT QKnxNetIpTimerNotifyProxy final
 {
 public:
@@ -54,6 +55,9 @@ public:
     class Q_KNX_EXPORT Builder final
     {
     public:
+        Builder();
+        ~Builder();
+
         Builder &setTimerValue(quint48 timerValue);
         Builder &setSerialNumber(const QKnxByteArray &serialNumber);
         Builder &setMessageTag(quint16 tag);
@@ -61,11 +65,11 @@ public:
 
         QKnxNetIpFrame create() const;
 
+        Builder(const Builder &other);
+        Builder &operator=(const Builder &other);
+
     private:
-        quint64 m_timer { Q_UINT48_MAX + 1 };
-        QKnxByteArray m_serial;
-        qint32 m_tag { -1 };
-        QKnxByteArray m_authCode;
+        QSharedDataPointer<QKnxNetIpTimerNotifyBuilderPrivate> d_ptr;
     };
     static QKnxNetIpTimerNotifyProxy::Builder builder();