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QTcpServer using QSslSocket, need help with certificates

  • Hello,

    I am trying to create basic SSL server (on Ubuntu 11.04 32bit), using QTcpServer with QSslSockets. I have managed to get it working with my dummy certifacate. But now i got real proper certificate and i am not sure what to add and where. I have recieved 5 files in total: AddTrustExternalCARoot.crt ,myappname.csr, myappname.key, COMODOHigh-AssuranceSecureServerCA.crt and STAR_myappname_com.crt.

    This method is called from QTcpServer::incomingConnection(int socketDescriptor) ... I basicly create QSslSocket, set the descriptor, add my certificates and start handshake...

    So my question then is: Could anyone show me how to properly set the QSslSocket?
    void SSLServerConnection::setSocket(int descriptor){

    sslsocket = new QSslSocket(this);
    //I am guessing those two are correctly
    //And now i need to set CA authorities somehow
    //to my knowledge this tells the socket to ask for valid certificate during ssl handshake
    connect(sslsocket, SIGNAL(encrypted()), SLOT(connectionEncrypted()));
    connect(sslsocket, SIGNAL(disconnected()), SLOT(connectionClosed()));
    connect(sslsocket, SIGNAL(readyRead()), SLOT(readyRead()));
    connect(sslsocket, SIGNAL(error(QAbstractSocket::SocketError)), SLOT(error(QAbstractSocket::SocketError)));
    qDebug() << "New ssl connection:";


  • Turns out i was using wrong file for localcertificate. With a proper .crt certificate it works with no problem.

  • Lifetime Qt Champion

    Hi and welcome to devnet !

    Great you found out and thanks for sharing the solution

    Can you also please update the thread title prepending [solved] ? So other forum users may know a solution has been found :)

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