QSslSocket : Having troubles

Hi !

I'm under Windows 2000 Pro, using the beautifull Qt4.3 open source version.
This has not been recompiled, and it is configured in shared/debug.
I've downloaed and installed the OpenSSL library, but I don't think this will help me.

I was using a QtcpSocket on Qt4.2.3 to connect an IMAP server.
Now I replaced it by a QSslSocket, that inherits from QtcpSocket, but I'm having troubles.



Myclass.h :

Code:

---

#include <QObject>
#include <QTcpSocket>
#include <QList>
#include <QString>
#include <QSslSocket>
#include <QProcess>
 
class MailChecker : public QObject
{
	Q_OBJECT	
 
public:
    MailChecker();
    void Check();
 
private slots:
	void SLOT_socket_proxyAuthenticationRequired(const QNetworkProxy &, QAuthenticator *);
	void SLOT_socket_sslErrors(const QList<QSslError>);
	void SLOT_socket_stateChanged(QAbstractSocket::SocketState);	
	void SLOT_socket_connected();
	void SLOT_socket_disconnected();
	void SLOT_socket_encrypted();
	void SLOT_socket_hostFound();
 
private:	
	QSslSocket *sockect_ssl;
 
    // Socket management
    void openSocket();
    void closeSocket();
    bool readLineFromSocket(QByteArray&); 
    bool writeToSocket(const QString &);
};

---

Myclass.cpp :

Code:

---

MailChecker::MailChecker() : QObject()
{	sockect_ssl = new QSslSocket(this);
 
	connect(sockect_ssl, SIGNAL(proxyAuthenticationRequired(const QNetworkProxy & proxy, QAuthenticator * authenticator)),
		this, SLOT(SLOT_socket_proxyAuthenticationRequired(const QNetworkProxy & proxy, QAuthenticator * authenticator)));	
	connect(sockect_ssl, SIGNAL(sslErrors(const QList<QSslError>)),this, SLOT(SLOT_socket_sslErrors(const QList<QSslError>)));
	connect(sockect_ssl, SIGNAL(stateChanged),	this, SLOT(SLOT_socket_stateChanged(QAbstractSocket::SocketState socketState)));	
	 connect(sockect_ssl, SIGNAL(connected()),	this, 	SLOT(SLOT_socket_connected()));
	 connect(sockect_ssl, SIGNAL(disconnected()),this, SLOT(SLOT_socket_disconnected()));
	connect(sockect_ssl, SIGNAL(encrypted()),	this, 	SLOT(SLOT_socket_encrypted()));	
	connect(sockect_ssl, SIGNAL(hostFound()),	this, 	SLOT(SLOT_socket_hostFound()));	
}
// ---------------------------------------------------------------------------------
void MailChecker::SLOT_socket_proxyAuthenticationRequired(const QNetworkProxy & proxy, QAuthenticator * authenticator)
{
	cout << "PROXY AUTHENTIFICATION REQUIRED" << endl;
}
 
void MailChecker::SLOT_socket_sslErrors(const QList<QSslError> errors)
{
	cout << "SSL ERRORS !" << endl;
}
 
void MailChecker::SLOT_socket_stateChanged(QAbstractSocket::SocketState socketState)
{
	cout << "STATE CHANGED" << endl;
}
 
void MailChecker::SLOT_socket_connected()
{
	cout << "CONNECTED" << endl;
}
 
void MailChecker::SLOT_socket_disconnected()
{
	cout << "DISCONNECTED" << endl;
}
 
void MailChecker::SLOT_socket_encrypted()
{
	cout << "ENCRYPTED" << endl;
}
 
void MailChecker::SLOT_socket_hostFound()
{
	cout << "HOST FOUND" << endl;
}
// ---------------------------------------------------------------------------------
void MailChecker::openSocket()
{
	sockect_ssl = new QSslSocket();
}
 
void MailChecker::closeSocket()
{
	if ( sockect_ssl )
	{
		sockect_ssl->close();
		sockect_ssl->deleteLater();
	}
}
 
bool MailChecker::readLineFromSocket( QByteArray& data )
{		
	while ( !sockect_ssl->canReadLine() )
	{
		if ( !sockect_ssl->waitForReadyRead( 30 * 1000 ) )
		{
			closeSocket();
			return 0;
		}
	}				
	if (sockect_ssl->readLine(data.data(), data.size()) == -1)
        {
		closeSocket();
		return false;
	}
	return true;
}
 
bool MailChecker::writeToSocket( const QString & str )
{
    QByteArray ba = str.toLocal8Bit();
 
    qint64 wrote = 0;
    while ( wrote < (qint64)ba.size() )
	{
        qint64 ret = sockect_ssl->write( ba.data() + wrote, ba.size() - wrote );
		if ( ret == -1 )
			return false; // error
		wrote += ret;
	}
	sockect_ssl->waitForBytesWritten();
	return true;
}

---

My first trouble is that the Slot are never called by my application... And they should be.
I don't understand why...



(1) Using the QSslSocket like a QTcpSocket (no encryption) :

Code:

---

void MailChecker::Check()
{  
sockect_ssl->connectToHost(IMAP_host, IMAP_port);
 
    if (sockect_ssl->waitForConnected(15000))
    {	    	       
        if (readLineFromSocket(line))
        {      	    	
            ...
        }
        else
        {
             cout << "\n ERROR - Unable to read server response. " << endl;
        }
    }

---

This worked well for my old class using the QTcpSocket.
Now, this works well too, with the QSslSocket... But the data isn't encrypted.



(2) Using the QSslSocket with encryption :

Code:

---

void MailChecker::Check()
{  
sockect_ssl->connectToHostEncrypted(IMAP_host, IMAP_port);
 
    if (sockect_ssl->waitForConnected(15000))
    {	    	       
        if (readLineFromSocket(line))
        {      	    	
            ...
        }
        else
        {
             cout << "\n ERROR - Unable to read server response. " << endl;
        }
    }

---

This should work. This is like the example given is the documentation...
But I get the ERROR message immediately : the socket hasn't waited for 15s. trying to connect to host with the encrypted mode.



(3) Using the QSslSocket with encryption :

Code:

---

void MailChecker::Check()
{  
sockect_ssl->connectToHost(IMAP_host, IMAP_port);
 
    if (sockect_ssl->waitForConnected(15000))
    {	    	       
        sockect_ssl->startClientEncryption();
        if (readLineFromSocket(line))
        {      	    	
            ...
        }
        else
        {
             cout << "\n ERROR - Unable to read server response. " << endl;
        }
    }

---

This is the sameThis code should do the same job as the (2) solution, but is provided for a TLS support. In my case, I get the ERROR like before, without any wait for connection.


If someone has an idea ?
Thanks :)

Quote:

---

Originally Posted by Nyphel

My first trouble is that the Slot are never called by my application... And they should be.

---

Are there any messages on the console?

(You have to add "CONFIG += console" to the .pro file to see the console.)

The debug informations allowed me to adjust 3 connect declarations for my Signals/Slots... But they're still not called.

Moreover, for the following source code I get some debug advices :

Code:

---

sockect_ssl = new QSslSocket(this);

---

Code:

---

QSslSocket: cannot find ssleay32 library: QLibrary::load_sys: Cannot load ssleay32 (Le module spécifié est introuvable.).
QSslSocketBackendPrivate::ensureInitialized: unable to resolve all symbols
QSslSocket: cannot find ssleay32 library: QLibrary::load_sys: Cannot load ssleay32 (Le module spécifié est introuvable.).
QSslSocketBackendPrivate::ensureInitialized: unable to resolve all symbols
QSslSocket: cannot find ssleay32 library: QLibrary::load_sys: Cannot load ssleay32 (Le module spécifié est introuvable.).
QSslSocketBackendPrivate::ensureInitialized: unable to resolve all symbols
QSslSocket: cannot find ssleay32 library: QLibrary::load_sys: Cannot load ssleay32 (Le module spécifié est introuvable.).
QSslSocketBackendPrivate::ensureInitialized: unable to resolve all symbols
QSslSocket: cannot find ssleay32 library: QLibrary::load_sys: Cannot load ssleay32 (Le module spécifié est introuvable.).
QSslSocketBackendPrivate::ensureInitialized: unable to resolve all symbols

---

It seems that I should make a link between my app (and more generally Qt, because I would like to recompile it in -release -static modes) and the openSSL library... But I can't achieve to do that.

I suppose I shoul modifiy my .pro file, so did I, adding the following lines :

Code:

---

INCLUDEPATH += /openssl/include
LIBS += -L/openssl/lib ssleay32.lib libeay32.lib

---

But the console returns me :

Code:

---

C:\Qt\4.3.0\Workspace\Veilleur\SRC\MC_NB_mails>make
mingw32-make -f Makefile.Release
mingw32-make[1]: Entering directory `C:/Qt/4.3.0/Workspace/Veilleur/SRC/MC_NB_ma
ils'
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-rel
oc -Wl,-s -Wl,-subsystem,console -mthreads -Wl -o "release\MC_NB_mails.exe" tmp\
obj\release_shared\Gestion_comptes.o tmp\obj\release_shared\Gestion_liste_noire.
o tmp\obj\release_shared\MailChecker.o tmp\obj\release_shared\main.o tmp\obj\rel
ease_shared\MC_Logs.o tmp\obj\release_shared\moc_MailChecker.o  -L"c:\Qt\4.3.0\l
ib" -L"c:\Qt\4.3.0\lib" ssleay32.lib -leay32.lib -lQtGui4 -lQtNetwork4 -lQtCore4
 
g++: ssleay32.lib: No such file or directory
mingw32-make[1]: *** [release\MC_NB_mails.exe] Error 1
mingw32-make[1]: Leaving directory `C:/Qt/4.3.0/Workspace/Veilleur/SRC/MC_NB_mai
ls'
mingw32-make: *** [release] Error 2

---

I get the same error with openSSL installed in "C:\" or "C:\Program Files\".
I've tried to create a new OPENSSLDIR environment variable, without success.



.

I've installed OpenSSL like this :

- C:\OpenSSL : the OpenSSL application directory
- C:\OpenSSL\lib\MinGW : the directory that contains the libs (ssleay32.a, ssleay32.def, libeay32.a and libeay32.def)
- C:\OpenSSL\include\openssl : the directory that contains the files to include, I suppose...

My MinGW compiler is in C:\MinGW.

Has someone an idea about linking the openSSL libs from my application, please ?