[C++] [Qt5] fixed cpp-client-qt5 HttpRequestWorker requests crashing on timeout... (#5651)

* - fixed cpp-client-qt5 HttpRequestWorker requests crashing on timeout when they have actually NOT timed out (were calling back into a deleted struct).

* #minor fixes after review

* Regenerate changed files

Co-authored-by: valentin Bisson <valentin@inrosoftware.com>
Co-authored-by: etherealjoy <sunn.ssb@live.com>

modules/openapi-generator/src/main/resources/cpp-qt5-client/HttpRequest.cpp.mustache

@@ -45,14 +45,17 @@ void {{prefix}}HttpRequestInput::add_file(QString variable_name, QString local_f
 }
 
 {{prefix}}HttpRequestWorker::{{prefix}}HttpRequestWorker(QObject *parent)
-    : QObject(parent), manager(nullptr), _timeOut(0) {
+    : QObject(parent), manager(nullptr), timeOutTimer(this) {
     qsrand(QDateTime::currentDateTime().toTime_t());
     manager = new QNetworkAccessManager(this);
     workingDirectory = QDir::currentPath();
     connect(manager, &QNetworkAccessManager::finished, this, &{{prefix}}HttpRequestWorker::on_manager_finished);
+    timeOutTimer.setSingleShot(true);
 }
 
 {{prefix}}HttpRequestWorker::~{{prefix}}HttpRequestWorker() {
+    QObject::disconnect(&timeOutTimer, &QTimer::timeout, nullptr, nullptr);
+    timeOutTimer.stop();
     for (const auto &item : multiPartFields) {
         if (item != nullptr) {
             delete item;
@@ -86,8 +89,11 @@ QByteArray *{{prefix}}HttpRequestWorker::getMultiPartField(const QString &fieldn
     return nullptr;
 }
 
-void {{prefix}}HttpRequestWorker::setTimeOut(int timeOut) {
-    _timeOut = timeOut;
+void {{prefix}}HttpRequestWorker::setTimeOut(int timeOutMs) {
+    timeOutTimer.setInterval(timeOutMs);
+    if(timeOutTimer.interval() == 0) {
+        QObject::disconnect(&timeOutTimer, &QTimer::timeout, nullptr, nullptr);
+    }
 }
 
 void {{prefix}}HttpRequestWorker::setWorkingDirectory(const QString &path) {
@@ -347,12 +353,17 @@ void {{prefix}}HttpRequestWorker::execute({{prefix}}HttpRequestInput *input) {
         buffer->setParent(reply);
 #endif
     }
-    if (_timeOut > 0) {
-        QTimer::singleShot(_timeOut, [=]() { on_manager_timeout(reply); });
+    if (timeOutTimer.interval() > 0) {
+        QObject::connect(&timeOutTimer, &QTimer::timeout, [=]() { on_manager_timeout(reply); });
+        timeOutTimer.start();
     }
 }
 
 void {{prefix}}HttpRequestWorker::on_manager_finished(QNetworkReply *reply) {
+    if(timeOutTimer.isActive()) {
+        QObject::disconnect(&timeOutTimer, &QTimer::timeout, nullptr, nullptr);
+        timeOutTimer.stop();
+    }
     error_type = reply->error();
     error_str = reply->errorString();
     if (reply->rawHeaderPairs().count() > 0) {

modules/openapi-generator/src/main/resources/cpp-qt5-client/HttpRequest.h.mustache

@@ -13,6 +13,7 @@
 #include <QNetworkReply>
 #include <QObject>
 #include <QString>
+#include <QTimer>
 
 #include "{{prefix}}HttpFileElement.h"
 
@@ -59,7 +60,7 @@ public:
     QString http_attribute_encode(QString attribute_name, QString input);
     void execute({{prefix}}HttpRequestInput *input);
     static QSslConfiguration *sslDefaultConfiguration;
-    void setTimeOut(int tout);
+    void setTimeOut(int timeOutMs);
     void setWorkingDirectory(const QString &path);
     {{prefix}}HttpFileElement getHttpFileElement(const QString &fieldname = QString());
     QByteArray *getMultiPartField(const QString &fieldname = QString());
@@ -78,7 +79,7 @@ private:
     QMap<QString, {{prefix}}HttpFileElement> files;
     QMap<QString, QByteArray *> multiPartFields;
     QString workingDirectory;
-    int _timeOut;
+    QTimer timeOutTimer;
     bool isResponseCompressionEnabled;
     bool isRequestCompressionEnabled;
     void on_manager_timeout(QNetworkReply *reply);

samples/client/petstore/cpp-qt5/client/PFXHttpRequest.cpp

@@ -52,14 +52,17 @@ void PFXHttpRequestInput::add_file(QString variable_name, QString local_filename
 }
 
 PFXHttpRequestWorker::PFXHttpRequestWorker(QObject *parent)
-    : QObject(parent), manager(nullptr), _timeOut(0) {
+    : QObject(parent), manager(nullptr), timeOutTimer(this) {
     qsrand(QDateTime::currentDateTime().toTime_t());
     manager = new QNetworkAccessManager(this);
     workingDirectory = QDir::currentPath();
     connect(manager, &QNetworkAccessManager::finished, this, &PFXHttpRequestWorker::on_manager_finished);
+    timeOutTimer.setSingleShot(true);
 }
 
 PFXHttpRequestWorker::~PFXHttpRequestWorker() {
+    QObject::disconnect(&timeOutTimer, &QTimer::timeout, nullptr, nullptr);
+    timeOutTimer.stop();
     for (const auto &item : multiPartFields) {
         if (item != nullptr) {
             delete item;
@@ -93,8 +96,11 @@ QByteArray *PFXHttpRequestWorker::getMultiPartField(const QString &fieldname) {
     return nullptr;
 }
 
-void PFXHttpRequestWorker::setTimeOut(int timeOut) {
-    _timeOut = timeOut;
+void PFXHttpRequestWorker::setTimeOut(int timeOutMs) {
+    timeOutTimer.setInterval(timeOutMs);
+    if(timeOutTimer.interval() == 0) {
+        QObject::disconnect(&timeOutTimer, &QTimer::timeout, nullptr, nullptr);
+    }
 }
 
 void PFXHttpRequestWorker::setWorkingDirectory(const QString &path) {
@@ -354,12 +360,17 @@ void PFXHttpRequestWorker::execute(PFXHttpRequestInput *input) {
         buffer->setParent(reply);
 #endif
     }
-    if (_timeOut > 0) {
-        QTimer::singleShot(_timeOut, [=]() { on_manager_timeout(reply); });
+    if (timeOutTimer.interval() > 0) {
+        QObject::connect(&timeOutTimer, &QTimer::timeout, [=]() { on_manager_timeout(reply); });
+        timeOutTimer.start();
     }
 }
 
 void PFXHttpRequestWorker::on_manager_finished(QNetworkReply *reply) {
+    if(timeOutTimer.isActive()) {
+        QObject::disconnect(&timeOutTimer, &QTimer::timeout, nullptr, nullptr);
+        timeOutTimer.stop();
+    }
     error_type = reply->error();
     error_str = reply->errorString();
     if (reply->rawHeaderPairs().count() > 0) {

samples/client/petstore/cpp-qt5/client/PFXHttpRequest.h

@@ -23,6 +23,7 @@
 #include <QNetworkReply>
 #include <QObject>
 #include <QString>
+#include <QTimer>
 
 #include "PFXHttpFileElement.h"
 
@@ -67,7 +68,7 @@ public:
     QString http_attribute_encode(QString attribute_name, QString input);
     void execute(PFXHttpRequestInput *input);
     static QSslConfiguration *sslDefaultConfiguration;
-    void setTimeOut(int tout);
+    void setTimeOut(int timeOutMs);
     void setWorkingDirectory(const QString &path);
     PFXHttpFileElement getHttpFileElement(const QString &fieldname = QString());
     QByteArray *getMultiPartField(const QString &fieldname = QString());
@@ -86,7 +87,7 @@ private:
     QMap<QString, PFXHttpFileElement> files;
     QMap<QString, QByteArray *> multiPartFields;
     QString workingDirectory;
-    int _timeOut;
+    QTimer timeOutTimer;
     bool isResponseCompressionEnabled;
     bool isRequestCompressionEnabled;
     void on_manager_timeout(QNetworkReply *reply);