1 /***************************************************************************
2 * Copyright (C) 2005-2022 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
19 ***************************************************************************/
24 #include <QCoreApplication>
25 #include <QHostAddress>
26 #include <QMetaMethod>
27 #include <QMetaProperty>
33 #include "signalproxy.h"
34 #include "syncableobject.h"
38 using namespace Protocol;
40 class RemovePeerEvent : public QEvent
43 RemovePeerEvent(Peer* peer)
44 : QEvent(QEvent::Type(SignalProxy::RemovePeerEvent))
50 // ==================================================
52 // ==================================================
55 thread_local SignalProxy* _current{nullptr};
58 SignalProxy::SignalProxy(QObject* parent)
65 SignalProxy::SignalProxy(ProxyMode mode, QObject* parent)
72 SignalProxy::~SignalProxy()
74 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
75 while (classIter != _syncSlave.end()) {
76 ObjectId::iterator objIter = classIter->begin();
77 while (objIter != classIter->end()) {
78 SyncableObject* obj = objIter.value();
79 objIter = classIter->erase(objIter);
80 obj->stopSynchronize(this);
88 // Ensure that we don't try to clean up while destroying ourselves
89 disconnect(this, &QObject::destroyed, this, &SignalProxy::detachSlotObjects);
94 SignalProxy* SignalProxy::current()
99 void SignalProxy::setProxyMode(ProxyMode mode)
101 if (!_peerMap.empty()) {
102 qWarning() << Q_FUNC_INFO << "Cannot change proxy mode while connected";
113 void SignalProxy::init()
115 _heartBeatInterval = 0;
116 _maxHeartBeatCount = 0;
117 setHeartBeatInterval(30);
118 setMaxHeartBeatCount(2);
124 void SignalProxy::initServer() {}
126 void SignalProxy::initClient()
128 attachSlot("__objectRenamed__", this, &SignalProxy::objectRenamed);
131 void SignalProxy::setHeartBeatInterval(int secs)
133 if (_heartBeatInterval != secs) {
134 _heartBeatInterval = secs;
135 emit heartBeatIntervalChanged(secs);
139 void SignalProxy::setMaxHeartBeatCount(int max)
141 if (_maxHeartBeatCount != max) {
142 _maxHeartBeatCount = max;
143 emit maxHeartBeatCountChanged(max);
147 bool SignalProxy::addPeer(Peer* peer)
152 if (_peerMap.values().contains(peer))
155 if (!peer->isOpen()) {
156 qWarning("SignalProxy: peer needs to be open!");
160 if (proxyMode() == Client) {
161 if (!_peerMap.isEmpty()) {
162 qWarning("SignalProxy: only one peer allowed in client mode!");
165 connect(peer, &Peer::lagUpdated, this, &SignalProxy::lagUpdated);
168 connect(peer, &Peer::disconnected, this, &SignalProxy::removePeerBySender);
169 connect(peer, &Peer::secureStateChanged, this, &SignalProxy::updateSecureState);
172 peer->setParent(this);
174 if (peer->id() < 0) {
175 peer->setId(nextPeerId());
176 peer->setConnectedSince(QDateTime::currentDateTimeUtc());
179 _peerMap[peer->id()] = peer;
181 peer->setSignalProxy(this);
183 if (peerCount() == 1)
190 void SignalProxy::removeAllPeers()
192 Q_ASSERT(proxyMode() == Server || peerCount() <= 1);
193 // we need to copy that list since we modify it in the loop
194 QList<Peer*> peers = _peerMap.values();
195 for (auto peer : peers) {
200 void SignalProxy::removePeer(Peer* peer)
203 qWarning() << Q_FUNC_INFO << "Trying to remove a null peer!";
207 if (_peerMap.isEmpty()) {
208 qWarning() << "SignalProxy::removePeer(): No peers in use!";
212 if (!_peerMap.values().contains(peer)) {
213 qWarning() << "SignalProxy: unknown Peer" << peer;
217 disconnect(peer, nullptr, this, nullptr);
218 peer->setSignalProxy(nullptr);
220 _peerMap.remove(peer->id());
221 emit peerRemoved(peer);
223 if (peer->parent() == this)
228 if (_peerMap.isEmpty())
232 void SignalProxy::removePeerBySender()
234 removePeer(qobject_cast<Peer*>(sender()));
237 void SignalProxy::renameObject(const SyncableObject* obj, const QString& newname, const QString& oldname)
239 if (proxyMode() == Client)
242 const QMetaObject* meta = obj->syncMetaObject();
243 const QByteArray className(meta->className());
244 objectRenamed(className, newname, oldname);
246 dispatch(RpcCall("__objectRenamed__", QVariantList() << className << newname << oldname));
249 void SignalProxy::objectRenamed(const QByteArray& classname, const QString& newname, const QString& oldname)
251 if (newname != oldname) {
252 if (_syncSlave.contains(classname) && _syncSlave[classname].contains(oldname)) {
253 SyncableObject* obj = _syncSlave[classname][newname] = _syncSlave[classname].take(oldname);
254 obj->setObjectName(newname);
260 const QMetaObject* SignalProxy::metaObject(const QObject* obj)
262 if (const auto* syncObject = qobject_cast<const SyncableObject*>(obj))
263 return syncObject->syncMetaObject();
265 return obj->metaObject();
268 SignalProxy::ExtendedMetaObject* SignalProxy::extendedMetaObject(const QMetaObject* meta) const
270 if (_extendedMetaObjects.contains(meta))
271 return _extendedMetaObjects[meta];
276 SignalProxy::ExtendedMetaObject* SignalProxy::createExtendedMetaObject(const QMetaObject* meta, bool checkConflicts)
278 if (!_extendedMetaObjects.contains(meta)) {
279 _extendedMetaObjects[meta] = new ExtendedMetaObject(meta, checkConflicts);
281 return _extendedMetaObjects[meta];
284 void SignalProxy::attachSlotObject(const QByteArray& signalName, std::unique_ptr<SlotObjectBase> slotObject)
286 // Remove all attached slots related to the context upon its destruction
287 connect(slotObject->context(), &QObject::destroyed, this, &SignalProxy::detachSlotObjects, Qt::UniqueConnection);
289 _attachedSlots.emplace(QMetaObject::normalizedSignature(signalName.constData()), std::move(slotObject));
292 void SignalProxy::detachSlotObjects(const QObject *context)
294 for (auto&& it = _attachedSlots.begin(); it != _attachedSlots.end(); ) {
295 if (it->second->context() == context) {
296 it = _attachedSlots.erase(it);
304 void SignalProxy::synchronize(SyncableObject* obj)
306 createExtendedMetaObject(obj, true);
308 // attaching as slave to receive sync Calls
309 QByteArray className(obj->syncMetaObject()->className());
310 _syncSlave[className][obj->objectName()] = obj;
312 if (proxyMode() == Server) {
313 obj->setInitialized();
314 emit objectInitialized(obj);
317 if (obj->isInitialized())
318 emit objectInitialized(obj);
323 obj->synchronize(this);
326 void SignalProxy::stopSynchronize(SyncableObject* obj)
328 // we can't use a className here, since it might be effed up, if we receive the call as a result of a decon
329 // gladly the objectName() is still valid. So we have only to iterate over the classes not each instance! *sigh*
330 QHash<QByteArray, ObjectId>::iterator classIter = _syncSlave.begin();
331 while (classIter != _syncSlave.end()) {
332 if (classIter->contains(obj->objectName()) && classIter.value()[obj->objectName()] == obj) {
333 classIter->remove(obj->objectName());
338 obj->stopSynchronize(this);
341 void SignalProxy::dispatchSignal(QByteArray sigName, QVariantList params)
343 RpcCall rpcCall{std::move(sigName), std::move(params)};
344 if (_restrictMessageTarget) {
345 for (auto&& peer : _restrictedTargets) {
346 dispatch(peer, rpcCall);
355 void SignalProxy::dispatch(const T& protoMessage)
357 for (auto&& peer : _peerMap.values()) {
358 dispatch(peer, protoMessage);
363 void SignalProxy::dispatch(Peer* peer, const T& protoMessage)
367 if (peer && peer->isOpen())
368 peer->dispatch(protoMessage);
370 QCoreApplication::postEvent(this, new ::RemovePeerEvent(peer));
372 _targetPeer = nullptr;
375 void SignalProxy::handle(Peer* peer, const SyncMessage& syncMessage)
377 if (!_syncSlave.contains(syncMessage.className) || !_syncSlave[syncMessage.className].contains(syncMessage.objectName)) {
378 qWarning() << QString("no registered receiver for sync call: %1::%2 (objectName=\"%3\"). Params are:")
379 .arg(syncMessage.className, syncMessage.slotName, syncMessage.objectName)
380 << syncMessage.params;
384 SyncableObject* receiver = _syncSlave[syncMessage.className][syncMessage.objectName];
385 ExtendedMetaObject* eMeta = extendedMetaObject(receiver);
386 if (!eMeta->slotMap().contains(syncMessage.slotName)) {
387 qWarning() << QString("no matching slot for sync call: %1::%2 (objectName=\"%3\"). Params are:")
388 .arg(syncMessage.className, syncMessage.slotName, syncMessage.objectName)
389 << syncMessage.params;
393 int slotId = eMeta->slotMap()[syncMessage.slotName];
394 if (proxyMode() != eMeta->receiverMode(slotId)) {
395 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed. Wrong ProxyMode!", eMeta->methodName(slotId).constData());
399 // We can no longer construct a QVariant from QMetaType::Void
400 QVariant returnValue;
401 int returnType = eMeta->returnType(slotId);
402 if (returnType != QMetaType::Void)
403 returnValue = QVariant(static_cast<QVariant::Type>(returnType));
405 if (!invokeSlot(receiver, slotId, syncMessage.params, returnValue, peer)) {
406 qWarning("SignalProxy::handleSync(): invokeMethod for \"%s\" failed ", eMeta->methodName(slotId).constData());
410 if (returnValue.type() != QVariant::Invalid && eMeta->receiveMap().contains(slotId)) {
411 int receiverId = eMeta->receiveMap()[slotId];
412 QVariantList returnParams;
413 if (eMeta->argTypes(receiverId).count() > 1)
414 returnParams << syncMessage.params;
415 returnParams << returnValue;
417 peer->dispatch(SyncMessage(syncMessage.className, syncMessage.objectName, eMeta->methodName(receiverId), returnParams));
418 _targetPeer = nullptr;
421 // send emit update signal
422 invokeSlot(receiver, eMeta->updatedRemotelyId());
425 void SignalProxy::handle(Peer* peer, const RpcCall& rpcCall)
429 auto range = _attachedSlots.equal_range(rpcCall.signalName);
430 std::for_each(range.first, range.second, [&rpcCall](const auto& p) {
431 if (!p.second->invoke(rpcCall.params)) {
432 qWarning() << "Could not invoke slot for remote signal" << rpcCall.signalName;
437 void SignalProxy::handle(Peer* peer, const InitRequest& initRequest)
439 if (!_syncSlave.contains(initRequest.className)) {
440 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Class:" << initRequest.className;
444 if (!_syncSlave[initRequest.className].contains(initRequest.objectName)) {
445 qWarning() << "SignalProxy::handleInitRequest() received initRequest for unregistered Object:" << initRequest.className
446 << initRequest.objectName;
450 SyncableObject* obj = _syncSlave[initRequest.className][initRequest.objectName];
452 peer->dispatch(InitData(initRequest.className, initRequest.objectName, initData(obj)));
453 _targetPeer = nullptr;
456 void SignalProxy::handle(Peer* peer, const InitData& initData)
460 if (!_syncSlave.contains(initData.className)) {
461 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Class:" << initData.className;
465 if (!_syncSlave[initData.className].contains(initData.objectName)) {
466 qWarning() << "SignalProxy::handleInitData() received initData for unregistered Object:" << initData.className << initData.objectName;
470 SyncableObject* obj = _syncSlave[initData.className][initData.objectName];
471 setInitData(obj, initData.initData);
474 bool SignalProxy::invokeSlot(QObject* receiver, int methodId, const QVariantList& params, QVariant& returnValue, Peer* peer)
476 ExtendedMetaObject* eMeta = extendedMetaObject(receiver);
477 const QList<int> args = eMeta->argTypes(methodId);
478 const int numArgs = params.count() < args.count() ? params.count() : args.count();
480 if (eMeta->minArgCount(methodId) > params.count()) {
481 qWarning() << "SignalProxy::invokeSlot(): not enough params to invoke" << eMeta->methodName(methodId);
485 void* _a[] = {nullptr, // return type...
490 nullptr, // and 10 args - that's the max size qt can handle with signals and slots
497 // check for argument compatibility and build params array
498 for (int i = 0; i < numArgs; i++) {
499 if (!params[i].isValid()) {
500 qWarning() << "SignalProxy::invokeSlot(): received invalid data for argument number" << i << "of method"
501 << QString("%1::%2()")
502 .arg(receiver->metaObject()->className())
503 .arg(receiver->metaObject()->method(methodId).methodSignature().constData());
504 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
507 if (args[i] != QMetaType::type(params[i].typeName())) {
508 qWarning() << "SignalProxy::invokeSlot(): incompatible param types to invoke" << eMeta->methodName(methodId);
512 _a[i + 1] = const_cast<void*>(params[i].constData());
515 if (returnValue.type() != QVariant::Invalid)
516 _a[0] = const_cast<void*>(returnValue.constData());
518 Qt::ConnectionType type = QThread::currentThread() == receiver->thread() ? Qt::DirectConnection : Qt::QueuedConnection;
520 if (type == Qt::DirectConnection) {
522 auto result = receiver->qt_metacall(QMetaObject::InvokeMetaMethod, methodId, _a) < 0;
523 _sourcePeer = nullptr;
527 qWarning() << "Queued Connections are not implemented yet";
528 // note to self: qmetaobject.cpp:990 ff
533 bool SignalProxy::invokeSlot(QObject* receiver, int methodId, const QVariantList& params, Peer* peer)
536 return invokeSlot(receiver, methodId, params, ret, peer);
539 void SignalProxy::requestInit(SyncableObject* obj)
541 if (proxyMode() == Server || obj->isInitialized())
544 dispatch(InitRequest(obj->syncMetaObject()->className(), obj->objectName()));
547 QVariantMap SignalProxy::initData(SyncableObject* obj) const
549 return obj->toVariantMap();
552 void SignalProxy::setInitData(SyncableObject* obj, const QVariantMap& properties)
554 if (obj->isInitialized())
556 obj->fromVariantMap(properties);
557 obj->setInitialized();
558 emit objectInitialized(obj);
559 invokeSlot(obj, extendedMetaObject(obj)->updatedRemotelyId());
562 void SignalProxy::customEvent(QEvent* event)
564 switch ((int)event->type()) {
565 case RemovePeerEvent: {
566 auto* e = static_cast<::RemovePeerEvent*>(event);
573 qWarning() << Q_FUNC_INFO << "Received unknown custom event:" << event->type();
578 void SignalProxy::sync_call__(const SyncableObject* obj, SignalProxy::ProxyMode modeType, const char* funcname, va_list ap)
580 // qDebug() << obj << modeType << "(" << _proxyMode << ")" << funcname;
581 if (modeType != _proxyMode)
584 ExtendedMetaObject* eMeta = extendedMetaObject(obj);
588 const QList<int>& argTypes = eMeta->argTypes(eMeta->methodId(QByteArray(funcname)));
590 for (int i = 0; i < argTypes.size(); i++) {
591 if (argTypes[i] == 0) {
592 qWarning() << Q_FUNC_INFO << "received invalid data for argument number" << i << "of signal"
593 << QString("%1::%2").arg(eMeta->metaObject()->className()).arg(funcname);
594 qWarning() << " - make sure all your data types are known by the Qt MetaSystem";
597 params << QVariant(argTypes[i], va_arg(ap, void*));
600 if (_restrictMessageTarget) {
601 for (auto peer : _restrictedTargets) {
603 dispatch(peer, SyncMessage(eMeta->metaObject()->className(), obj->objectName(), QByteArray(funcname), params));
607 dispatch(SyncMessage(eMeta->metaObject()->className(), obj->objectName(), QByteArray(funcname), params));
610 void SignalProxy::disconnectDevice(QIODevice* dev, const QString& reason)
612 if (!reason.isEmpty())
613 qWarning() << qPrintable(reason);
614 auto* sock = qobject_cast<QAbstractSocket*>(dev);
616 qWarning() << qPrintable(tr("Disconnecting")) << qPrintable(sock->peerAddress().toString());
620 void SignalProxy::dumpProxyStats()
623 if (proxyMode() == Server)
629 foreach (ObjectId oid, _syncSlave.values())
630 slaveCount += oid.count();
633 qDebug() << " Proxy Mode:" << mode;
634 qDebug() << " attached Slots:" << _attachedSlots.size();
635 qDebug() << " number of synced Slaves:" << slaveCount;
636 qDebug() << "number of Classes cached:" << _extendedMetaObjects.count();
639 void SignalProxy::updateSecureState()
641 bool wasSecure = _secure;
643 _secure = !_peerMap.isEmpty();
644 for (auto peer : _peerMap.values()) {
645 _secure &= peer->isSecure();
648 if (wasSecure != _secure)
649 emit secureStateChanged(_secure);
652 QVariantList SignalProxy::peerData()
655 for (auto&& peer : _peerMap.values()) {
657 data["id"] = peer->id();
658 data["clientVersion"] = peer->clientVersion();
659 // We explicitly rename this, as, due to the Debian reproducibility changes, buildDate isn’t actually the build
660 // date anymore, but on newer clients the date of the last git commit
661 data["clientVersionDate"] = peer->buildDate();
662 data["remoteAddress"] = peer->address();
663 data["connectedSince"] = peer->connectedSince();
664 data["secure"] = peer->isSecure();
665 data["features"] = static_cast<quint32>(peer->features().toLegacyFeatures());
666 data["featureList"] = peer->features().toStringList();
672 Peer* SignalProxy::peerById(int peerId)
674 // We use ::value() here instead of the [] operator because the latter has the side-effect
675 // of automatically inserting a null value with the passed key into the map. See
676 // https://doc.qt.io/qt-5/qhash.html#operator-5b-5d and https://doc.qt.io/qt-5/qhash.html#value.
677 return _peerMap.value(peerId);
680 void SignalProxy::restrictTargetPeers(QSet<Peer*> peers, std::function<void()> closure)
682 auto previousRestrictMessageTarget = _restrictMessageTarget;
683 auto previousRestrictedTargets = _restrictedTargets;
684 _restrictMessageTarget = true;
685 _restrictedTargets = peers;
689 _restrictMessageTarget = previousRestrictMessageTarget;
690 _restrictedTargets = previousRestrictedTargets;
693 Peer* SignalProxy::sourcePeer()
698 void SignalProxy::setSourcePeer(Peer* sourcePeer)
700 _sourcePeer = sourcePeer;
703 Peer* SignalProxy::targetPeer()
708 void SignalProxy::setTargetPeer(Peer* targetPeer)
710 _targetPeer = targetPeer;
713 // ---- SlotObjectBase ---------------------------------------------------------------------------------------------------------------------
715 SignalProxy::SlotObjectBase::SlotObjectBase(const QObject* context)
719 const QObject* SignalProxy::SlotObjectBase::context() const
724 // ---- ExtendedMetaObject ----------------------------------------------------------------------------------------------------------------
726 SignalProxy::ExtendedMetaObject::ExtendedMetaObject(const QMetaObject* meta, bool checkConflicts)
728 , _updatedRemotelyId(_meta->indexOfSignal("updatedRemotely()"))
730 for (int i = 0; i < _meta->methodCount(); i++) {
731 if (_meta->method(i).methodType() != QMetaMethod::Slot)
734 if (_meta->method(i).methodSignature().contains('*'))
735 continue; // skip methods with ptr params
737 QByteArray method = methodName(_meta->method(i));
738 if (method.startsWith("init"))
739 continue; // skip initializers
741 if (_methodIds.contains(method)) {
742 /* funny... moc creates for methods containing default parameters multiple metaMethod with separate methodIds.
743 we don't care... we just need the full fledged version
745 const QMetaMethod& current = _meta->method(_methodIds[method]);
746 const QMetaMethod& candidate = _meta->method(i);
747 if (current.parameterTypes().count() > candidate.parameterTypes().count()) {
748 int minCount = candidate.parameterTypes().count();
749 QList<QByteArray> commonParams = current.parameterTypes().mid(0, minCount);
750 if (commonParams == candidate.parameterTypes())
751 continue; // we already got the full featured version
754 int minCount = current.parameterTypes().count();
755 QList<QByteArray> commonParams = candidate.parameterTypes().mid(0, minCount);
756 if (commonParams == current.parameterTypes()) {
757 _methodIds[method] = i; // use the new one
761 if (checkConflicts) {
762 qWarning() << "class" << meta->className() << "contains overloaded methods which is currently not supported!";
763 qWarning() << " - " << _meta->method(i).methodSignature() << "conflicts with"
764 << _meta->method(_methodIds[method]).methodSignature();
768 _methodIds[method] = i;
772 const SignalProxy::ExtendedMetaObject::MethodDescriptor& SignalProxy::ExtendedMetaObject::methodDescriptor(int methodId)
774 if (!_methods.contains(methodId)) {
775 _methods[methodId] = MethodDescriptor(_meta->method(methodId));
777 return _methods[methodId];
780 const QHash<int, int>& SignalProxy::ExtendedMetaObject::receiveMap()
782 if (_receiveMap.isEmpty()) {
783 QHash<int, int> receiveMap;
785 QMetaMethod requestSlot;
786 QByteArray returnTypeName;
787 QByteArray signature;
788 QByteArray methodName;
792 const int methodCount = _meta->methodCount();
793 for (int i = 0; i < methodCount; i++) {
794 requestSlot = _meta->method(i);
795 if (requestSlot.methodType() != QMetaMethod::Slot)
798 returnTypeName = requestSlot.typeName();
799 if (QMetaType::Void == (QMetaType::Type)returnType(i))
802 signature = requestSlot.methodSignature();
803 if (!signature.startsWith("request"))
806 paramsPos = signature.indexOf('(');
810 methodName = signature.left(paramsPos);
811 params = signature.mid(paramsPos);
813 methodName = methodName.replace("request", "receive");
814 params = params.left(params.count() - 1) + ", " + returnTypeName + ")";
816 signature = QMetaObject::normalizedSignature(methodName + params);
817 receiverId = _meta->indexOfSlot(signature);
819 if (receiverId == -1) {
820 signature = QMetaObject::normalizedSignature(methodName + "(" + returnTypeName + ")");
821 receiverId = _meta->indexOfSlot(signature);
824 if (receiverId != -1) {
825 receiveMap[i] = receiverId;
828 _receiveMap = receiveMap;
833 QByteArray SignalProxy::ExtendedMetaObject::methodName(const QMetaMethod& method)
835 QByteArray sig(method.methodSignature());
836 return sig.left(sig.indexOf("("));
839 QString SignalProxy::ExtendedMetaObject::methodBaseName(const QMetaMethod& method)
841 QString methodname = QString(method.methodSignature()).section("(", 0, 0);
843 // determine where we have to chop:
845 if (method.methodType() == QMetaMethod::Slot) {
846 // we take evertyhing from the first uppercase char if it's slot
847 upperCharPos = methodname.indexOf(QRegExp("[A-Z]"));
848 if (upperCharPos == -1)
850 methodname = methodname.mid(upperCharPos);
853 // and if it's a signal we discard everything from the last uppercase char
854 upperCharPos = methodname.lastIndexOf(QRegExp("[A-Z]"));
855 if (upperCharPos == -1)
857 methodname = methodname.left(upperCharPos);
860 methodname[0] = methodname[0].toUpper();
865 SignalProxy::ExtendedMetaObject::MethodDescriptor::MethodDescriptor(const QMetaMethod& method)
866 : _methodName(SignalProxy::ExtendedMetaObject::methodName(method))
867 , _returnType(QMetaType::type(method.typeName()))
869 // determine argTypes
870 QList<QByteArray> paramTypes = method.parameterTypes();
872 for (int i = 0; i < paramTypes.count(); i++) {
873 argTypes.append(QMetaType::type(paramTypes[i]));
875 _argTypes = argTypes;
877 // determine minArgCount
878 QString signature(method.methodSignature());
879 _minArgCount = method.parameterTypes().count() - signature.count("=");
881 _receiverMode = (_methodName.startsWith("request")) ? SignalProxy::Server : SignalProxy::Client;