Fix tcm intermittent reception (#604)

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# PR Details
## Description
Fix the TCM intermittent reception issue where carma cloud sends TCMs in
an http request and v2xhub CARMACloudPlugin sometimes does not receive
the TCMs. Replace the OpenAI generated code with QhttpEngine recommended
functional call, refer to:
https://ci.quickmediasolutions.com/job/qhttpengine-documentation/doxygen/classQHttpEngine_1_1QObjectHandler.html.

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## Related Issue
#601
#603
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## Motivation and Context
CARMA cloud integration testing
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## How Has This Been Tested?
Local integration test
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## Types of changes

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- [x] Defect fix (non-breaking change that fixes an issue)
- [ ] New feature (non-breaking change that adds functionality)
- [ ] Breaking change (fix or feature that cause existing functionality
to change)

## Checklist:

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that apply. -->
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here to help! -->

- [ ] I have added any new packages to the sonar-scanner.properties file
- [ ] My change requires a change to the documentation.
- [ ] I have updated the documentation accordingly.
- [x] I have read the **CONTRIBUTING** document.
[V2XHUB Contributing
Guide](https://github.com/usdot-fhwa-OPS/V2X-Hub/blob/develop/Contributing.md)
- [ ] I have added tests to cover my changes.
- [ ] All new and existing tests passed.

src/v2i-hub/CARMACloudPlugin/src/CARMACloudPlugin.cpp

@@ -463,25 +463,14 @@ int CARMACloudPlugin::StartWebService()
  	QHostAddress address = QHostAddress(QString::fromStdString (webip));
 	quint16 port = static_cast<quint16>(webport);
 
-	QSharedPointer<OpenAPI::OAIApiRequestHandler> handler(new OpenAPI::OAIApiRequestHandler());
-	handler = QSharedPointer<OpenAPI::OAIApiRequestHandler> (new OpenAPI::OAIApiRequestHandler());
-
-	auto router = QSharedPointer<OpenAPI::OAIApiRouter>::create();
-    router->setUpRoutes();
-
-    QObject::connect(handler.data(), &OpenAPI::OAIApiRequestHandler::requestReceived, [&](QHttpEngine::Socket *socket) {
-
-		CARMAResponseHandler(socket);
-    });
-
-    QObject::connect(handler.data(), &OpenAPI::OAIApiRequestHandler::requestReceived, [&](QHttpEngine::Socket *socket) {
-
-		router->processRequest(socket);
-    });
-
-    QHttpEngine::Server server(handler.data());
-
-    if (!server.listen(address, port)) {
+	QHttpEngine::QObjectHandler apiHandler;
+	apiHandler.registerMethod(TCM_REPLY, [this](QHttpEngine::Socket *socket)
+							  { 
+							this->CARMAResponseHandler(socket);
+							socket->close(); });
+	QHttpEngine::Server server(&apiHandler);
+
+	if (!server.listen(address, port)) {
         qCritical("Unable to listen on the specified port.");
         return 1;
     }

src/v2i-hub/CARMACloudPlugin/src/CARMACloudPlugin.h

@@ -67,6 +67,7 @@
 #include <unistd.h>
 #endif
 #include <qhttpengine/server.h>
+#include <qhttpengine/qobjecthandler.h>
 #include <v2xhubWebAPI/OAIApiRouter.h>
 
 
@@ -99,6 +100,7 @@ class CARMACloudPlugin: public PluginClient {
 	uint16_t webport;
 	std::string webip;
 	uint16_t fetchtime;
+	void CARMAResponseHandler(QHttpEngine::Socket *socket);
 protected:
 
 	void UpdateConfigSettings();
@@ -109,7 +111,6 @@ class CARMACloudPlugin: public PluginClient {
 	void OnStateChange(IvpPluginState state);
 
 	int  StartWebService();
-	void CARMAResponseHandler(QHttpEngine::Socket *socket);
 	int CloudSend(const string& msg,const string& url, const string& base, const string& method);
 	//Send HTTP request async
 	void CloudSendAsync(const string& msg,const string& url, const string& base, const string& method);
@@ -210,6 +211,8 @@ class CARMACloudPlugin: public PluginClient {
 	const char *CONTENT_ENCODING_KEY = "Content-Encoding";
     const char *CONTENT_ENCODING_VALUE = "gzip";
 	std::string list_tcm = "true";
+	//API URL to accept TCM response
+	const QString TCM_REPLY="tcmreply";
 
 };
 std::mutex _cfgLock;