QTcpServer dosent revie msg

[Zergi]

Hi

I dont know why my server dosent recive any msg... I even copied code from example and it dosent work... Can u tell me what is wrong? I m sure thath client sendes msg but server dosent recive them... I tried to write in QDataStream in(tcpServer) but it didnt want to compile...

client.h

class klient : public QMainWindow,private Ui::klientClass
{
    Q_OBJECT
 
public:
    klient(QWidget *parent = 0);
    ~klient();
public slots:
	// TCp
	void polacz();
	void Trejestracja();
private:
	QTcpSocket *tcpSocket;
 
 
};

class klient : public QMainWindow,private Ui::klientClass
{
    Q_OBJECT

public:
    klient(QWidget *parent = 0);
    ~klient();
public slots:
	// TCp
	void polacz();
	void Trejestracja();
private:
	QTcpSocket *tcpSocket;


};

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client.cpp

klient::klient(QWidget *parent)
    : QMainWindow(parent)
{
	setupUi(this);
	polacz();
	Trejestracja();
 
}
void klient::polacz()
{
	tcpSocket = new QTcpSocket(this);
	tcpSocket->connectToHost("localhost",6112);
 
}
 
void klient::Trejestracja(QString l,QString h)
{      
 //COPIED FROM EXAMPLE
	QByteArray block;
	     QDataStream out(&block, QIODevice::WriteOnly);
	     out.setVersion(QDataStream::Qt_4_0); 
	     out << (quint16)0;
	     out << "heh";
	     out.device()->seek(0);
	     out << (quint16)(block.size() - sizeof(quint16)); 
	     tcpSocket->write(block);
	     tcpSocket->disconnectFromHost();
	/*
    QByteArray reje;
    QDataStream out(&reje, QIODevice::WriteOnly);
    out.setVersion(QDataStream::Qt_4_0); 
    out<<"TEST";
    tcpSocket->write(reje);*/
    Lopis->setText("OK");
}

klient::klient(QWidget *parent)
    : QMainWindow(parent)
{
	setupUi(this);
	polacz();
	Trejestracja();
	
}
void klient::polacz()
{
	tcpSocket = new QTcpSocket(this);
	tcpSocket->connectToHost("localhost",6112);
	
}

void klient::Trejestracja(QString l,QString h)
{      
 //COPIED FROM EXAMPLE
	QByteArray block;
	     QDataStream out(&block, QIODevice::WriteOnly);
	     out.setVersion(QDataStream::Qt_4_0); 
	     out << (quint16)0;
	     out << "heh";
	     out.device()->seek(0);
	     out << (quint16)(block.size() - sizeof(quint16)); 
	     tcpSocket->write(block);
	     tcpSocket->disconnectFromHost();
	/*
    QByteArray reje;
    QDataStream out(&reje, QIODevice::WriteOnly);
    out.setVersion(QDataStream::Qt_4_0); 
    out<<"TEST";
    tcpSocket->write(reje);*/
    Lopis->setText("OK");
}

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server.h

class server : public QWidget, private Ui::serverClass
{
    Q_OBJECT
 
public:
    server(QWidget *parent = 0);
    ~server();
public slots:
    // TCP
    void newconnection();
    void odbierzw();
 
 
private:
 
	// TCP
	QTcpServer *tcpServer;
	QTcpSocket *clientConnection;
	quint16 blockSize;
 
};

class server : public QWidget, private Ui::serverClass
{
    Q_OBJECT

public:
    server(QWidget *parent = 0);
    ~server();
public slots:
    // TCP
    void newconnection();
    void odbierzw();


private:

	// TCP
	QTcpServer *tcpServer;
	QTcpSocket *clientConnection;
	quint16 blockSize;

};

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server.cpp

server::server(QWidget *parent)
    : QWidget(parent)
{
	setupUi(this);
    // TCp
    tcpServer = new QTcpServer(this);
    tcpServer->listen(QHostAddress::Any,6112);
    connect(tcpServer, SIGNAL(newConnection()), this, SLOT(newconnection()));
    connect(tcpServer, SIGNAL(readyRead()), this, SLOT(odbierzw()));
 
 
 
 
}
 
 
void server::newconnection()
{
	clientConnection = tcpServer->nextPendingConnection();
	QString ip;
	ip = clientConnection->localAddress().toString();
	QTreeWidgetItem *item = new QTreeWidgetItem;
	item->setText(0,ip);
	item->setText(1,QTime::currentTime().toString());
	TWlist->addTopLevelItem(item);	
 
}
void server::odbierzw()
{
// COPIED FROM EXAMPLE
	 QDataStream in(clientConnection);
	     in.setVersion(QDataStream::Qt_4_0);
 
	     if (blockSize == 0) {
	         if (clientConnection->bytesAvailable() < (int)sizeof(quint16))
	             return;
 
	         in >> blockSize;
	     }
 
	     if (clientConnection->bytesAvailable() < blockSize)
	         return; 
	     QString nextFortune;
	     in >> nextFortune;
 
 
	/*
    QDataStream in(clientConnection);
    in.setVersion(QDataStream::Qt_4_0);
    QString sprawdz;
    in >> sprawdz;
    label->setText(sprawdz);*/
    label_2->setText("DOSZLO");
 
 
}

server::server(QWidget *parent)
    : QWidget(parent)
{
	setupUi(this);
    // TCp
    tcpServer = new QTcpServer(this);
    tcpServer->listen(QHostAddress::Any,6112);
    connect(tcpServer, SIGNAL(newConnection()), this, SLOT(newconnection()));
    connect(tcpServer, SIGNAL(readyRead()), this, SLOT(odbierzw()));
    


	
}


void server::newconnection()
{
	clientConnection = tcpServer->nextPendingConnection();
	QString ip;
	ip = clientConnection->localAddress().toString();
	QTreeWidgetItem *item = new QTreeWidgetItem;
	item->setText(0,ip);
	item->setText(1,QTime::currentTime().toString());
	TWlist->addTopLevelItem(item);	
	
}
void server::odbierzw()
{
// COPIED FROM EXAMPLE
	 QDataStream in(clientConnection);
	     in.setVersion(QDataStream::Qt_4_0);

	     if (blockSize == 0) {
	         if (clientConnection->bytesAvailable() < (int)sizeof(quint16))
	             return;

	         in >> blockSize;
	     }

	     if (clientConnection->bytesAvailable() < blockSize)
	         return; 
	     QString nextFortune;
	     in >> nextFortune;


	/*
    QDataStream in(clientConnection);
    in.setVersion(QDataStream::Qt_4_0);
    QString sprawdz;
    in >> sprawdz;
    label->setText(sprawdz);*/
    label_2->setText("DOSZLO");
   
	
}

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Big thx for help
Best Regards

ps
sry for my english ;p

[high_flyer]

While I go through the code, try running the application from the Qt console, and see if you get any warnings in the console.

[jacek]

You should connect clientConnection's readyRead() to odbierzw().

[Zergi]

Yes i did thath before i posted ... When i do thath my program dosent want to open ;p I have msg with errors from windows... I tried to copy connect to newconnection() function, program opened but he still dosent want to recive msg....

thx for help

[high_flyer]

I have msg with errors from windows...

Post the errors you got.

[Zergi]

It's normal windows error ;p
something like thath http://www.oatmedia.com/support/windows_error.jpg

[jacek]

Compile your application in debug mode and start it within a debugger. You should get a real error message then. But first make sure that clientConnection is initialized at the time you establish the connection.

And a small question: What will happen if two clients connect to the server at the same time?