Esempio n. 1
0
void QHttpSocketEngine::slotSocketConnected()
{
    Q_D(QHttpSocketEngine);

    // Send the greeting.
    const char method[] = "CONNECT";
    QByteArray peerAddress = d->peerAddress.toString().toLatin1();
    QByteArray path = peerAddress + ':' + QByteArray::number(d->peerPort);
    QByteArray data = method;
    data += " ";
    data += path;
    data += " HTTP/1.1\r\n";
    data += "Proxy-Connection: keep-alive\r\n"
            "Host: " + peerAddress + "\r\n";
    QAuthenticatorPrivate *priv = QAuthenticatorPrivate::getPrivate(d->authenticator);
    //qDebug() << "slotSocketConnected: priv=" << priv << (priv ? (int)priv->method : -1);
    if (priv && priv->method != QAuthenticatorPrivate::None) {
        data += "Proxy-Authorization: " + priv->calculateResponse(method, path);
        data += "\r\n";
    }
    data += "\r\n";
//     qDebug() << ">>>>>>>> sending request" << this;
//     qDebug() << data;
//     qDebug() << ">>>>>>>";
    d->socket->write(data);
    d->state = ConnectSent;
}
Esempio n. 2
0
void QHttpNetworkConnectionPrivate::createAuthorization(QAbstractSocket *socket, QHttpNetworkRequest &request)
{
    Q_ASSERT(socket);

    int i = indexOf(socket);

    // Send "Authorization" header, but not if it's NTLM and the socket is already authenticated.
    if (channels[i].authMethod != QAuthenticatorPrivate::None) {
        if (!(channels[i].authMethod == QAuthenticatorPrivate::Ntlm && channels[i].lastStatus != 401)) {
            QAuthenticatorPrivate *priv = QAuthenticatorPrivate::getPrivate(channels[i].authenticator);
            if (priv && priv->method != QAuthenticatorPrivate::None) {
                QByteArray response = priv->calculateResponse(request.d->methodName(), request.d->uri(false));
                request.setHeaderField("Authorization", response);
                channels[i].authenticationCredentialsSent = true;
            }
        }
    }

    // Send "Proxy-Authorization" header, but not if it's NTLM and the socket is already authenticated.
    if (channels[i].proxyAuthMethod != QAuthenticatorPrivate::None) {
        if (!(channels[i].proxyAuthMethod == QAuthenticatorPrivate::Ntlm && channels[i].lastStatus != 407)) {
            QAuthenticatorPrivate *priv = QAuthenticatorPrivate::getPrivate(channels[i].proxyAuthenticator);
            if (priv && priv->method != QAuthenticatorPrivate::None) {
                QByteArray response = priv->calculateResponse(request.d->methodName(), request.d->uri(false));
                request.setHeaderField("Proxy-Authorization", response);
                channels[i].proxyCredentialsSent = true;
            }
        }
    }
}
void QHttpSocketEngine::slotSocketConnected()
{
    Q_D(QHttpSocketEngine);

    // Send the greeting.
    const char method[] = "CONNECT ";
    QByteArray peerAddress = d->peerName.isEmpty() ?
                             d->peerAddress.toString().toLatin1() :
                             QUrl::toAce(d->peerName);
    QByteArray path = peerAddress + ':' + QByteArray::number(d->peerPort);
    QByteArray data = method;
    data += path;
    data += " HTTP/1.1\r\n";
    data += "Proxy-Connection: keep-alive\r\n"
            "User-Agent: ";
    QVariant v = property("_q_user-agent");
    if (v.isValid())
        data += v.toByteArray();
    else
        data += "Mozilla/5.0";
    data += "\r\n"
            "Host: " + peerAddress + "\r\n";
    QAuthenticatorPrivate *priv = QAuthenticatorPrivate::getPrivate(d->authenticator);
    //qDebug() << "slotSocketConnected: priv=" << priv << (priv ? (int)priv->method : -1);
    if (priv && priv->method != QAuthenticatorPrivate::None) {
        data += "Proxy-Authorization: " + priv->calculateResponse(method, path);
        data += "\r\n";
    }
    data += "\r\n";
//     qDebug() << ">>>>>>>> sending request" << this;
//     qDebug() << data;
//     qDebug() << ">>>>>>>";
    d->socket->write(data);
    d->state = ConnectSent;
}
Esempio n. 4
0
void QHttpSocketEngine::slotSocketConnected()
{
    Q_D(QHttpSocketEngine);

    // Send the greeting.
    const char method[] = "CONNECT";
    QByteArray peerAddress = d->peerName.isEmpty() ?
                             d->peerAddress.toString().toLatin1() :
                             QUrl::toAce(d->peerName);
    QByteArray path = peerAddress + ':' + QByteArray::number(d->peerPort);
    QByteArray data = method;
    data += " ";
    data += path;
    data += " HTTP/1.1\r\n";
    data += "Proxy-Connection: keep-alive\r\n";
    data += "Host: " + peerAddress + "\r\n";
    if (!d->proxy.hasRawHeader("User-Agent"))
        data += "User-Agent: Mozilla/5.0\r\n";
    foreach (const QByteArray &header, d->proxy.rawHeaderList()) {
        data += header + ": " + d->proxy.rawHeader(header) + "\r\n";
    }
    QAuthenticatorPrivate *priv = QAuthenticatorPrivate::getPrivate(d->authenticator);
    //qDebug() << "slotSocketConnected: priv=" << priv << (priv ? (int)priv->method : -1);
    if (priv && priv->method != QAuthenticatorPrivate::None) {
        d->credentialsSent = true;
        data += "Proxy-Authorization: " + priv->calculateResponse(method, path);
        data += "\r\n";
    }
    data += "\r\n";
//     qDebug() << ">>>>>>>> sending request" << this;
//     qDebug() << data;
//     qDebug() << ">>>>>>>";
    d->socket->write(data);
    d->state = ConnectSent;
}
void QHttpSocketEngine::slotSocketReadNotification()
{
    Q_D(QHttpSocketEngine);
    if (d->state != Connected && d->socket->bytesAvailable() == 0)
        return;

    if (d->state == Connected) {
        // Forward as a read notification.
        if (d->readNotificationEnabled)
            emitReadNotification();
        return;
    }

  readResponseContent:
    if (d->state == ReadResponseContent) {
        char dummybuffer[4096];
        while (d->pendingResponseData) {
            int read = d->socket->read(dummybuffer, qMin(sizeof(dummybuffer), (size_t)d->pendingResponseData));
            if (read >= 0)
                dummybuffer[read] = 0;

            if (read == 0)
                return;
            if (read == -1) {
                d->socket->disconnectFromHost();
                emitWriteNotification();
                return;
            }
            d->pendingResponseData -= read;
        }
        if (d->pendingResponseData > 0)
            return;
        d->state = SendAuthentication;
        slotSocketConnected();
        return;
    }

    // Still in handshake mode. Wait until we've got a full response.
    bool done = false;
    do {
        d->readBuffer += d->socket->readLine();
    } while (!(done = d->readBuffer.endsWith("\r\n\r\n")) && d->socket->canReadLine());

    if (!done) {
        // Wait for more.
        return;
    }

    if (!d->readBuffer.startsWith("HTTP/1.")) {
        // protocol error, this isn't HTTP
        d->readBuffer.clear();
        d->socket->close();
        setState(QAbstractSocket::UnconnectedState);
        setError(QAbstractSocket::ProxyProtocolError, tr("Did not receive HTTP response from proxy"));
        emitConnectionNotification();
        return;
    }

    QHttpResponseHeader responseHeader(QString::fromLatin1(d->readBuffer));
    d->readBuffer.clear(); // we parsed the proxy protocol response. from now on direct socket reading will be done

    int statusCode = responseHeader.statusCode();
    QAuthenticatorPrivate *priv = 0;
    if (statusCode == 200) {
        d->state = Connected;
        setLocalAddress(d->socket->localAddress());
        setLocalPort(d->socket->localPort());
        setState(QAbstractSocket::ConnectedState);
        d->authenticator.detach();
        priv = QAuthenticatorPrivate::getPrivate(d->authenticator);
        priv->hasFailed = false;
    } else if (statusCode == 407) {
        if (d->credentialsSent) {
            //407 response again means the provided username/password were invalid.
            d->authenticator = QAuthenticator(); //this is needed otherwise parseHttpResponse won't set the state, and then signal isn't emitted.
            d->authenticator.detach();
            priv = QAuthenticatorPrivate::getPrivate(d->authenticator);
            priv->hasFailed = true;
        }
        else if (d->authenticator.isNull())
            d->authenticator.detach();
        priv = QAuthenticatorPrivate::getPrivate(d->authenticator);

        priv->parseHttpResponse(responseHeader, true);

        if (priv->phase == QAuthenticatorPrivate::Invalid) {
            // problem parsing the reply
            d->socket->close();
            setState(QAbstractSocket::UnconnectedState);
            setError(QAbstractSocket::ProxyProtocolError, tr("Error parsing authentication request from proxy"));
            emitConnectionNotification();
            return;
        }

        bool willClose;
        QString proxyConnectionHeader = responseHeader.value(QLatin1String("Proxy-Connection"));
        // Although most proxies use the unofficial Proxy-Connection header, the Connection header
        // from http spec is also allowed.
        if (proxyConnectionHeader.isEmpty())
            proxyConnectionHeader = responseHeader.value(QLatin1String("Connection"));
        proxyConnectionHeader = proxyConnectionHeader.toLower();
        if (proxyConnectionHeader == QLatin1String("close")) {
            willClose = true;
        } else if (proxyConnectionHeader == QLatin1String("keep-alive")) {
            willClose = false;
        } else {
            // no Proxy-Connection header, so use the default
            // HTTP 1.1's default behaviour is to keep persistent connections
            // HTTP 1.0 or earlier, so we expect the server to close
            willClose = (responseHeader.majorVersion() * 0x100 + responseHeader.minorVersion()) <= 0x0100;
        }

        if (willClose) {
            // the server will disconnect, so let's avoid receiving an error
            // especially since the signal below may trigger a new event loop
            d->socket->disconnectFromHost();
            d->socket->readAll();
        }

        if (priv->phase == QAuthenticatorPrivate::Done)
            emit proxyAuthenticationRequired(d->proxy, &d->authenticator);
        // priv->phase will get reset to QAuthenticatorPrivate::Start if the authenticator got modified in the signal above.
        if (priv->phase == QAuthenticatorPrivate::Done) {
            setError(QAbstractSocket::ProxyAuthenticationRequiredError, tr("Authentication required"));
            d->socket->disconnectFromHost();
        } else {
            // close the connection if it isn't already and reconnect using the chosen authentication method
            d->state = SendAuthentication;
            if (willClose) {
                d->socket->connectToHost(d->proxy.hostName(), d->proxy.port());
            } else {
                bool ok;
                int contentLength = responseHeader.value(QLatin1String("Content-Length")).toInt(&ok);
                if (ok && contentLength > 0) {
                    d->state = ReadResponseContent;
                    d->pendingResponseData = contentLength;
                    goto readResponseContent;
                } else {
                    d->state = SendAuthentication;
                    slotSocketConnected();
                }
            }
            return;
        }
    } else {
        d->socket->close();
        setState(QAbstractSocket::UnconnectedState);
        if (statusCode == 403 || statusCode == 405) {
            // 403 Forbidden
            // 405 Method Not Allowed
            setError(QAbstractSocket::SocketAccessError, tr("Proxy denied connection"));
        } else if (statusCode == 404) {
            // 404 Not Found: host lookup error
            setError(QAbstractSocket::HostNotFoundError, QAbstractSocket::tr("Host not found"));
        } else if (statusCode == 503) {
            // 503 Service Unavailable: Connection Refused
            setError(QAbstractSocket::ConnectionRefusedError, QAbstractSocket::tr("Connection refused"));
        } else {
            // Some other reply
            //qWarning("UNEXPECTED RESPONSE: [%s]", responseHeader.toString().toLatin1().data());
            setError(QAbstractSocket::ProxyProtocolError, tr("Error communicating with HTTP proxy"));
        }
    }

    // The handshake is done; notify that we're connected (or failed to connect)
    emitConnectionNotification();
}
Esempio n. 6
0
// handles the authentication for one channel and eventually re-starts the other channels
bool QHttpNetworkConnectionPrivate::handleAuthenticateChallenge(QAbstractSocket *socket, QHttpNetworkReply *reply,
                                                                bool isProxy, bool &resend)
{
    Q_ASSERT(socket);
    Q_ASSERT(reply);

    resend = false;
    //create the response header to be used with QAuthenticatorPrivate.
    QList<QPair<QByteArray, QByteArray> > fields = reply->header();

    //find out the type of authentication protocol requested.
    QAuthenticatorPrivate::Method authMethod = reply->d_func()->authenticationMethod(isProxy);
    if (authMethod != QAuthenticatorPrivate::None) {
        int i = indexOf(socket);
        //Use a single authenticator for all domains. ### change later to use domain/realm
        QAuthenticator* auth = 0;
        if (isProxy) {
            auth = &channels[i].proxyAuthenticator;
            channels[i].proxyAuthMethod = authMethod;
        } else {
            auth = &channels[i].authenticator;
            channels[i].authMethod = authMethod;
        }
        //proceed with the authentication.
        if (auth->isNull())
            auth->detach();
        QAuthenticatorPrivate *priv = QAuthenticatorPrivate::getPrivate(*auth);
        priv->parseHttpResponse(fields, isProxy);

        if (priv->phase == QAuthenticatorPrivate::Done) {
            pauseConnection();
            if (!isProxy) {
                if (channels[i].authenticationCredentialsSent) {
                    auth->detach();
                    priv = QAuthenticatorPrivate::getPrivate(*auth);
                    priv->hasFailed = true;
                    priv->phase = QAuthenticatorPrivate::Done;
                    channels[i].authenticationCredentialsSent = false;
                }
                emit reply->authenticationRequired(reply->request(), auth);
#ifndef QT_NO_NETWORKPROXY
            } else {
                if (channels[i].proxyCredentialsSent) {
                    auth->detach();
                    priv = QAuthenticatorPrivate::getPrivate(*auth);
                    priv->hasFailed = true;
                    priv->phase = QAuthenticatorPrivate::Done;
                    channels[i].proxyCredentialsSent = false;
                }
                emit reply->proxyAuthenticationRequired(networkProxy, auth);
#endif
            }
            resumeConnection();

            if (priv->phase != QAuthenticatorPrivate::Done) {
                // send any pending requests
                copyCredentials(i,  auth, isProxy);
            }
        } else if (priv->phase == QAuthenticatorPrivate::Start) {
            // If the url's authenticator has a 'user' set we will end up here (phase is only set to 'Done' by
            // parseHttpResponse above if 'user' is empty). So if credentials were supplied with the request,
            // such as in the case of an XMLHttpRequest, this is our only opportunity to cache them.
            emit reply->cacheCredentials(reply->request(), auth);
        }
        // - Changing values in QAuthenticator will reset the 'phase'. Therefore if it is still "Done"
        //   then nothing was filled in by the user or the cache
        // - If withCredentials has been set to false (e.g. by QtWebKit for a cross-origin XMLHttpRequest) then
        //   we need to bail out if authentication is required.
        if (priv->phase == QAuthenticatorPrivate::Done || !reply->request().withCredentials()) {
            // Reset authenticator so the next request on that channel does not get messed up
            auth = 0;
            if (isProxy)
                channels[i].proxyAuthenticator = QAuthenticator();
            else
                channels[i].authenticator = QAuthenticator();

            // authentication is cancelled, send the current contents to the user.
            emit channels[i].reply->headerChanged();
            emit channels[i].reply->readyRead();
            QNetworkReply::NetworkError errorCode =
                isProxy
                ? QNetworkReply::ProxyAuthenticationRequiredError
                : QNetworkReply::AuthenticationRequiredError;
            reply->d_func()->errorString = errorDetail(errorCode, socket);
            emit reply->finishedWithError(errorCode, reply->d_func()->errorString);
            // ### at this point the reply could be deleted
            return true;
        }
        //resend the request
        resend = true;
        return true;
    }
    return false;
}
Esempio n. 7
0
void QHttpSocketEngine::slotSocketReadNotification()
{
    Q_D(QHttpSocketEngine);
    if (d->state != Connected && d->socket->bytesAvailable() == 0)
        return;

    if (d->state == Connected) {
        // Forward as a read notification.
        if (d->readNotificationEnabled)
            emitReadNotification();
        return;
    }

  readResponseContent:
    if (d->state == ReadResponseContent) {
        char dummybuffer[4096];
        while (d->pendingResponseData) {
            int read = d->socket->read(dummybuffer, qMin(sizeof(dummybuffer), (size_t)d->pendingResponseData));
            dummybuffer[read] = 0;

            if (read == 0)
                return;
            if (read == -1) {
                d->socket->disconnectFromHost();
                emitWriteNotification();
                return;
            }
            d->pendingResponseData -= read;
        }
        if (d->pendingResponseData > 0)
            return;
        d->state = SendAuthentication;
        slotSocketConnected();
        return;
    }

    // Still in handshake mode. Wait until we've got a full response.
    bool done = false;
    do {
        d->readBuffer += d->socket->readLine();
    } while (!(done = d->readBuffer.endsWith("\r\n\r\n")) && d->socket->canReadLine());

    if (!done) {
        // Wait for more.
        return;
    }

    QHttpResponseHeader responseHeader(QString::fromLatin1(d->readBuffer));
    d->readBuffer.clear();

    int statusCode = responseHeader.statusCode();
    if (statusCode == 200) {
        d->state = Connected;
    } else if (statusCode == 503) {
        // 503 Service Unavailable: Connection Refused
        d->socket->close();
        setState(QAbstractSocket::UnconnectedState);
        setError(QAbstractSocket::ConnectionRefusedError, QAbstractSocket::tr("Connection refused"));
    } else if (statusCode == 407) {
        if (d->authenticator.isNull())
            d->authenticator.detach();
        QAuthenticatorPrivate *priv = QAuthenticatorPrivate::getPrivate(d->authenticator);

        priv->parseHttpResponse(responseHeader, true);

        if (priv->phase == QAuthenticatorPrivate::Done)
            emit proxyAuthenticationRequired(d->proxy, &d->authenticator);

        // priv->phase will get reset to QAuthenticatorPrivate::Start if the authenticator got modified in the signal above.
        if (priv->phase == QAuthenticatorPrivate::Done) {
            setError(QAbstractSocket::ProxyAuthenticationRequiredError, tr("Authentication required"));
            d->socket->disconnectFromHost();
        } else {
            // close the connection if it isn't already and reconnect using the chose authentication method
            d->state = SendAuthentication;
            bool willClose = (responseHeader.value(QLatin1String("Proxy-Connection")).toLower() == QLatin1String("close"));
            if (willClose) {
                d->socket->disconnectFromHost();
                d->socket->readAll();
                d->socket->connectToHost(d->proxy.hostName(), d->proxy.port());
            } else {
                bool ok;
                int contentLength = responseHeader.value(QLatin1String("Content-Length")).toInt(&ok);
                if (ok && contentLength > 0) {
                    d->state = ReadResponseContent;
                    d->pendingResponseData = contentLength;
                    goto readResponseContent;
                } else {
                    d->state = SendAuthentication;
                    slotSocketConnected();
                }
            }
            return;
        }
    } else {
        qWarning("UNEXPECTED RESPONSE: [%s]", responseHeader.toString().toLatin1().data());
        d->socket->disconnectFromHost();
    }

    // The handshake is done; request a new connection attempt by sending a write
    // notification.
    emitWriteNotification();
}
Esempio n. 8
0
void QHttpSocketEngine::slotSocketReadNotification()
{
    Q_D(QHttpSocketEngine);
    if (d->state != Connected && d->socket->bytesAvailable() == 0)
        return;

    if (d->state == Connected) {
        // Forward as a read notification.
        if (d->readNotificationEnabled)
            emitReadNotification();
        return;
    }

    if (d->state == ConnectSent) {
        d->reply->d_func()->state = QHttpNetworkReplyPrivate::NothingDoneState;
        d->state = ReadResponseHeader;
    }

    if (d->state == ReadResponseHeader) {
        bool ok = readHttpHeader();
        if (!ok) {
            // protocol error, this isn't HTTP
            d->socket->close();
            setState(QAbstractSocket::UnconnectedState);
            setError(QAbstractSocket::ProxyProtocolError, tr("Did not receive HTTP response from proxy"));
            emitConnectionNotification();
            return;
        }
        if (d->state == ReadResponseHeader)
            return; // readHttpHeader() was not done yet, need to wait for more header data
    }

    if (d->state == ReadResponseContent) {
        char dummybuffer[4096];
        while (d->pendingResponseData) {
            int read = d->socket->read(dummybuffer, qMin(sizeof(dummybuffer), (size_t)d->pendingResponseData));
            if (read == 0)
                return;
            if (read == -1) {
                d->socket->disconnectFromHost();
                emitWriteNotification();
                return;
            }
            d->pendingResponseData -= read;
        }
        if (d->pendingResponseData > 0)
            return;
        if (d->reply->d_func()->statusCode == 407)
            d->state = SendAuthentication;
    }

    int statusCode = d->reply->statusCode();
    QAuthenticatorPrivate *priv = 0;
    if (statusCode == 200) {
        d->state = Connected;
        setLocalAddress(d->socket->localAddress());
        setLocalPort(d->socket->localPort());
        setState(QAbstractSocket::ConnectedState);
        d->authenticator.detach();
        priv = QAuthenticatorPrivate::getPrivate(d->authenticator);
        priv->hasFailed = false;
    } else if (statusCode == 407) {
        if (d->authenticator.isNull())
            d->authenticator.detach();
        priv = QAuthenticatorPrivate::getPrivate(d->authenticator);

        if (d->credentialsSent && priv->phase != QAuthenticatorPrivate::Phase2) {
            // Remember that (e.g.) NTLM is two-phase, so only reset when the authentication is not currently in progress.
            //407 response again means the provided username/password were invalid.
            d->authenticator = QAuthenticator(); //this is needed otherwise parseHttpResponse won't set the state, and then signal isn't emitted.
            d->authenticator.detach();
            priv = QAuthenticatorPrivate::getPrivate(d->authenticator);
            priv->hasFailed = true;
        }

        priv->parseHttpResponse(d->reply->header(), true);

        if (priv->phase == QAuthenticatorPrivate::Invalid) {
            // problem parsing the reply
            d->socket->close();
            setState(QAbstractSocket::UnconnectedState);
            setError(QAbstractSocket::ProxyProtocolError, tr("Error parsing authentication request from proxy"));
            emitConnectionNotification();
            return;
        }

        bool willClose;
        QByteArray proxyConnectionHeader = d->reply->headerField("Proxy-Connection");
        // Although most proxies use the unofficial Proxy-Connection header, the Connection header
        // from http spec is also allowed.
        if (proxyConnectionHeader.isEmpty())
            proxyConnectionHeader = d->reply->headerField("Connection");
        proxyConnectionHeader = proxyConnectionHeader.toLower();
        if (proxyConnectionHeader == "close") {
            willClose = true;
        } else if (proxyConnectionHeader == "keep-alive") {
            willClose = false;
        } else {
            // no Proxy-Connection header, so use the default
            // HTTP 1.1's default behaviour is to keep persistent connections
            // HTTP 1.0 or earlier, so we expect the server to close
            willClose = (d->reply->majorVersion() * 0x100 + d->reply->minorVersion()) <= 0x0100;
        }

        if (willClose) {
            // the server will disconnect, so let's avoid receiving an error
            // especially since the signal below may trigger a new event loop
            d->socket->disconnectFromHost();
            d->socket->readAll();
            //We're done with the reply and need to reset it for the next connection
            delete d->reply;
            d->reply = new QHttpNetworkReply;
        }

        if (priv->phase == QAuthenticatorPrivate::Done)
            emit proxyAuthenticationRequired(d->proxy, &d->authenticator);
        // priv->phase will get reset to QAuthenticatorPrivate::Start if the authenticator got modified in the signal above.
        if (priv->phase == QAuthenticatorPrivate::Done) {
            setError(QAbstractSocket::ProxyAuthenticationRequiredError, tr("Authentication required"));
            d->socket->disconnectFromHost();
        } else {
            // close the connection if it isn't already and reconnect using the chosen authentication method
            d->state = SendAuthentication;
            if (willClose) {
                d->socket->connectToHost(d->proxy.hostName(), d->proxy.port());
            } else {
                // send the HTTP CONNECT again
                slotSocketConnected();
            }
            return;
        }
    } else {
        d->socket->close();
        setState(QAbstractSocket::UnconnectedState);
        if (statusCode == 403 || statusCode == 405) {
            // 403 Forbidden
            // 405 Method Not Allowed
            setError(QAbstractSocket::SocketAccessError, tr("Proxy denied connection"));
        } else if (statusCode == 404) {
            // 404 Not Found: host lookup error
            setError(QAbstractSocket::HostNotFoundError, QAbstractSocket::tr("Host not found"));
        } else if (statusCode == 503) {
            // 503 Service Unavailable: Connection Refused
            setError(QAbstractSocket::ConnectionRefusedError, QAbstractSocket::tr("Connection refused"));
        } else {
            // Some other reply
            //qWarning("UNEXPECTED RESPONSE: [%s]", responseHeader.toString().toLatin1().data());
            setError(QAbstractSocket::ProxyProtocolError, tr("Error communicating with HTTP proxy"));
        }
    }

    // The handshake is done; notify that we're connected (or failed to connect)
    emitConnectionNotification();
}