No reception of NewConnection signal

[cyte13]

Thanks for your reply, it is what I think, but doesn' work...
Here is the threated version one:

I have my own CGameEngine class derivated from QThread which has as a member a pointeur to another class CGameEngineServer which derivated from QTcpServer:

GAMEENGINE:
@
class GAMEENGINE_EXPORT CGameEngine : public QThread
{
Q_OBJECT
public:
/** Constructeur par défaut */
CGameEngine(QObject *parent = 0);

/** Destructeur */
~CGameEngine();

/** 
    StartProcess    :    Lance le serveur de jeu local et gère la partie
    engineport        :    Port d'écoute du serveur local de jeu
    placeavailable    :    Nombre maximum de joueur à la table
    RETURN            :    GAMEENGINE_CORRECT ou GAMEENGINE_ERREUR
**/
void StartProcess(quint16 engineport, int placeavailable);

void run();

private:
//CComEngineBDD* MyComEngineBDD;
CGameEngineServer* MyEngineServer;
...

void CGameEngine::StartProcess(quint16 engineport, int placeavailable)
{
m_engineport = engineport;
m_MaxPlayer = placeavailable;

start();

}

void CGameEngine::run()
{
/* Create the server object /
MyEngineServer = new CGameEngineServer();
/ Start listenning on port in arg /
if (!MyEngineServer->Listen(m_engineport)) exit();
/ Connect signals between MyEngineServer and this to specify processes at a new incoming message */
QObject::connect(MyEngineServer, SIGNAL(MessageToRead(QString)), this, SLOT(MessageToRead(QString)));
exec();
}
@
GAMEENGINESERVER:
@
class GAMENETWORK_EXPORT CGameEngineServer : public QTcpServer
{
Q_OBJECT

public:
CGameEngineServer(QObject *parent = 0);

bool Listen(quint16 port);
void Close();

protected:
//void incomingConnection(int socketDescriptor);

private:
QVector<QTcpSocket*> m_VectorClient;
quint16 tailleMessage;

signals:
void MessageToRead(QString);

public slots:
void NewConnection();
void ReadMessage();
};

bool CGameEngineServer::Listen(quint16 port)
{
bool result = listen(QHostAddress::LocalHost, port);
if (result)
{
printf("Local Game Engine Server listenning on port %d...\n", port);
/* make connection for a new connction */
QObject::connect(this, SIGNAL(newConnection()), this, SLOT(NewConnection()));
}
else
{
printf("Unable for Local Game Engine Server to listen on port %d...\n", port);
}
return result;
}

@

and now the call to StartProcess :
@
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
CGameEngine MyGameEngine;
MyGameEngine.StartProcess(8500, 2);

return a.exec();

}
@

[tony]

Well, I've tried your code in my PC ... and it works :)

Just a strange thing, but it's not dependent on your code. Qt Creator does not show printf messages in "Application Output". But if you launch your program in a console, you'll see the message (I put a printf in NewConnection slot).

[tony]

Btw ... use qDebug() function to show message in Application Output ...

[cyte13]

all my printf worked fine but NewConnection...
As an example, at the start of listenning : printf("Local Game Engine Server listenning on port %d...\n", port); => works fine in the console....

[tony]

Well, your server starts fine (as netstat shows...)

I just make a "telnet 127.0.0.1 8500" and a NEW CONNECTION!!! (my message) appears.

Firewall? Do you connect to 127.0.0.1 and port 8500? I cannot see any other problem ...

[cyte13]

I desactived the firewall but nothing changed.
What is strang is that the client correctly onnects to the server and intercepts the connected() signal.
Moreover, I need to put the WaitForNewConnection() to be able to intercept newConnection() signal....

[cyte13]

telnet succeced in connecting to the server but still nothing in new connection!!!!

[tony]

well, the only thing left is that I can post my code and you'll check for any diff ...

@
#ifndef GAMESERVER_H
#define GAMESERVER_H

#include <QtCore>
#include <QtNetwork>

class CGameEngineServer;

class CGameEngine : public QThread
{
Q_OBJECT

quint16 m_engineport;

public:
/** Constructeur par défaut */
CGameEngine(QObject *parent = 0) : QThread(parent), MyEngineServer(0) { }

/** Destructeur */
~CGameEngine() { }

/**
    StartProcess    :    Lance le serveur de jeu local et gère la partie
    engineport        :    Port d'écoute du serveur local de jeu
    placeavailable    :    Nombre maximum de joueur à la table
    RETURN            :    GAMEENGINE_CORRECT ou GAMEENGINE_ERREUR
**/
void StartProcess(quint16 engineport, int placeavailable);

void run();

private:
CGameEngineServer* MyEngineServer;
};

class CGameEngineServer : public QTcpServer
{
Q_OBJECT

public:
CGameEngineServer(QObject *parent = 0) : QTcpServer(parent) { }

bool Listen(quint16 port);
void Close();

protected:
//void incomingConnection(int socketDescriptor);

private:
QVector<QTcpSocket*> m_VectorClient;
quint16 tailleMessage;

signals:
void MessageToRead(QString);

public slots:
void NewConnection() { printf("NEW CONNECTION!!!\n"); }
void ReadMessage() { }
};

#endif // GAMESERVER_H
@

@
#include "gameserver.h"

void CGameEngine::StartProcess(quint16 engineport, int placeavailable)
{
m_engineport = engineport;
// m_MaxPlayer = placeavailable;

start();

}

void CGameEngine::run()
{
/* Create the server object /
MyEngineServer = new CGameEngineServer();
/ Start listenning on port in arg /
if (!MyEngineServer->Listen(m_engineport)) exit();
/ Connect signals between MyEngineServer and this to specify processes at a new incoming message */
QObject::connect(MyEngineServer, SIGNAL(MessageToRead(QString)), this, SLOT(MessageToRead(QString)));
exec();
}

bool CGameEngineServer::Listen(quint16 port)
{
bool result = listen(QHostAddress::LocalHost, port);
if (result)
{
printf("Local Game Engine Server listenning on port %d...\n", port);
/* make connection for a new connction */
QObject::connect(this, SIGNAL(newConnection()), this, SLOT(NewConnection()));
}
else
{
printf("Unable for Local Game Engine Server to listen on port %d...\n", port);
}
return result;
}
@

@
#include <QtCore/QCoreApplication>

#include "gameserver.h"

int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
CGameEngine MyGameEngine;
MyGameEngine.StartProcess(8500, 2);

return a.exec();

}
@

I hope that this will help you solve your problem ...

[cyte13]

not better.....
The only difference between your code and mine is that the CGameEngine and CGameEngineServer are available via a library (ifdef GAMENETWORK_LIB

define GAMENETWORK_EXPORT Q_DECL_EXPORT

#else

define GAMENETWORK_EXPORT Q_DECL_IMPORT

#endif)

==> May cause the issue?

[tony]

I don't think so ... well, you can try :)

[cyte13]

I progress...
When removing all classes access by library and directly insert .h and .cpp files into my app folder, it workd fine!!!!

Thanks a lot.

But... I would like to understand why it does not work when using StartProcess from the CGameEngine got from a library...!!!!