Deleting QSslSocket obj causes crash.

[chooser]

Hi was wondering if anybody understands this problem I am seeing.

I have a simple SSL client and server. Connection is fine. Communication is fine. When the client disconnects the server needs to delete the QSslSocket object, I would imagine. However when I do that the server seg faults. I don't understand what's going on. I expected this to be really straightforward but apparently i missing some QT (or other) concept.

Can anybody help out? Thanks

Essential server code:
@
void SSLServer::incomingConnection(int sd)
{
sslSocket = new SSLSocket(this);
if( sslSocket->setSocketDescriptor(sd))
{
QFile sslkeyfile(privKey_);
sslSocket->setPrivateKey(QSslKey(sslkeyfile.readAll(),QSsl::Rsa));

    QFile cliCertFile(serverCert_);
    sslSocket->setLocalCertificate(QSslCertificate(cliCertFile.readAll()));

    QFile certFile(caCert_);
    sslSocket->addCaCertificate(QSslCertificate(certFile.readAll()));

    sslSocket->setPeerVerifyMode(QSslSocket::VerifyPeer);
    sslSocket->setPeerVerifyDepth(1);        
    sslSocket->setProtocol(QSsl::SslV3);

    connect(sslSocket, SIGNAL(error(QAbstractSocket::SocketError)),
                   this, SLOT(error_handler(QAbstractSocket::SocketError)));
    connect(sslSocket, SIGNAL(sslErrors(QList<QSslError>)),
                   this, SLOT(ssl_error_handler(QList<QSslError>)));
    connect(sslSocket, SIGNAL(encrypted()), this, 
                  SLOT(ready()));
    connect(sslSocket, SIGNAL(readyRead()), this, 
                  SLOT(read_data_from_client()));

    sslSocket->startServerEncryption();
    if(!sslSocket->waitForEncrypted())
    {
        qDebug() <<  "failed to perform SSL handshake with client";
        QList<QSslCertificate> caChain = sslSocket->caCertificates();
        return;
    }
}

}

void SSLServer::read_data_from_client()
{
QByteArray qstrbytes = sslSocket->readAll();
qDebug() << Q_FUNC_INFO << qstrbytes;
}

void SSLServer::ready()
{
QSslCertificate clientCert = sslSocket->peerCertificate();
qDebug() << clientCert.isValid();
}

void SSLServer::error_handler(QAbstractSocket::SocketError in_error)
{
qDebug() << Q_FUNC_INFO << in_error;
if(in_error == QAbstractSocket::RemoteHostClosedError)
{
delete sslSocket; //// line causes crash !!!!!!!!!!
}
}
@

The seg fault happens here in QT's own QAbstractSocketPrivate::resetSocketLayer().
socketEngine is invalid, garbage pointer, But what am I supposed to do about it.

@void QAbstractSocketPrivate::resetSocketLayer()
{
#if defined (QABSTRACTSOCKET_DEBUG)
qDebug("QAbstractSocketPrivate::resetSocketLayer()");
#endif

if (socketEngine) {
    socketEngine->close(); //// right here crash happens!!!
    socketEngine->disconnect();
    delete socketEngine;
    socketEngine = 0;
    cachedSocketDescriptor = -1;
}
if (connectTimer)
    connectTimer->stop();
if (disconnectTimer)
    disconnectTimer->stop();

}@

[SGaist]

Hi,

Could you test replacing delete with

@sslSocket->deleteLater();@

?