Possible segmentation fault on GetRequest?

[neobits]

Hello! I'm currently working on a app that needs to access the internet.
I'm using the addon first to "ping" a server to see if there's network connection available. This is done in a separate thread.
But one in a while, the app terminates with a segmentation fault. I done a backtrace using gdb, but no result other than 1 stack was found. Maybe I'm doing some errors, so I would like to know if these calls can be handled in a separate thread.

Here is the coude:

ConnectionHandler.h

class ConnectionHandler : public ofThread
{
public:
	ConnectionHandler();

	void setup(ConfigurationManager *config);
	void threadedFunction();
	bool pingServer();
	bool isConnected();

private:
	ConfigurationManager	*config;
	std::map<std::string, std::string> headers;
	ofxHTTP::ClientSessionSettings sessionSettings;
	bool connected;
	long sleepTime;
};

ConnectionHandler.cpp

#include "ConnectionHandler.h"

ConnectionHandler::ConnectionHandler()
{

}
//--------------------------------------------------------------------------
void ConnectionHandler::setup(ConfigurationManager *config) 
{
	startThread(false);
	setThreadName("ConnectionHandlerThread");
	this->config = config;
	sleepTime = config->systemConfig.getCheckConnectionTime() * 1000;
	sessionSettings.setKeepAliveTimeout(Poco::Timespan::SECONDS * 10);
}
//--------------------------------------------------------------------------
bool ConnectionHandler::isConnected() 
{
	return connected;
}
//--------------------------------------------------------------------------
void ConnectionHandler::threadedFunction()
{
	while (isThreadRunning())
	{
		// Try ping and check response
		connected = pingServer();

		ofLogNotice("ConnectionHandler::threadedFunction")
			<< "Ping " << config->serverConfig.pbDNSServer
			<< " result " << std::boolalpha << connected;

		sleep(sleepTime);
	}
}
//--------------------------------------------------------------------------
bool ConnectionHandler::pingServer()
{
	bool success = false;
	//ResponseInfo info;
	try { // Do the query!
		string uri = "https://"; // Using a secure scheme
		uri.append(config->serverConfig.pbDNSServer); // Append server address
		ofx::HTTP::GetRequest request(uri);	// Create request
		ofxHTTP::Client client; // Create client
		ofx::HTTP::Context ctx;	// Create context
		ctx.setClientSessionSettings(sessionSettings);
		request.setContentType("application/x-www-form-urlencoded");
		
		// Execute the request within the given context.
		auto response = client.execute(ctx, request);

		if (response->getStatus() == Poco::Net::HTTPResponse::HTTP_OK) {
			//info.success = true;
			success = true;
		}
		ofLogNotice("ConnectionHandler::pingServer")
			<< "HTTP Status Code = " << response->getStatus();
	}
	catch (const Poco::Exception& exc) {
		ofLogError("ConnectionHandler::pingServer") << "Poco: " << exc.displayText();
	}
	catch (const std::exception& exc) {
		ofLogError("ConnectionHandler::pingServer") << exc.what();
	}
	return success;
}

Thank you very much for your help! I'm testing this for days but cannot resolve it :S