[resolved] How consuming a web service?

[andreyc]

What do you mean "native".
Qt does not have a built-in support for SOAP. You can implement it using "QtXml":http://qt-project.org/doc/qt-5/qtxml-index.html
Another option is to use third party solution. One of them is KDSOAP.

[quote author="jeanrl" date="1417466935"]
Is not it better to use native or better KD Soap?[/quote]
Do you want to implement SOAP yourself? If yes then "native" is the way. If not then use KDSOAP or other solutions.

[jeanrl]

It is thought that using the QNetworkmanager, QNetworkReply and QtXml I can do without third-party tools, but as I said before, I'm a little lost so I asked what the best option: Native or KDSOAP?

But both one way as the other I need an example, because I have no idea how to do.

Thanks.

[andreyc]

I think you need to familiarize yourself with SOAP.
After that you will be able to choose between doing it yourself or using thirdparty tools.
As for the examples: "kd soap example":https://github.com/KDAB/KDSoap/tree/master/examples
or "Qt networking and xml example":http://qt-project.org/doc/qt-5/qtnetwork-googlesuggest-example.html

[jeanrl]

Yes, you are correct, I need to familiarize myself with SOAP.

I'll see the two examples calmly to try to understand.

Again thank you for your attention.

PS I will not close the topic, it may appear more an opinion.

[jeanrl]

I'm trying to adapt the example proposed by friend here in this thread, but I'm having an error that I have no idea how to solve.

Can anyone tell me what's going on where I am going wrong?

Is giving error: "SSL handshake failed"

The code is:
@

Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);

networkManager.get(QNetworkRequest(QString("https://apphom.correios.com.br/SigepMasterJPA/AtendeClienteService/AtendeCliente?wsdl")));

connect(&networkManager, SIGNAL(finished(QNetworkReply*)),
        this, SLOT(slotRequestFinished(QNetworkReply*)));

}

void Widget::slotRequestFinished(QNetworkReply *networkReply)
{
qDebug() << "Chegou Final";

QUrl url = networkReply->url();

if (!networkReply->error())
{
    QStringList choices;
    QStringList hits;

    QByteArray response(networkReply->readAll());

    qDebug() << "response " << response;


    QXmlStreamReader xml(response);
    while (!xml.atEnd()) {
        xml.readNext();
        
        qDebug() < ...;

    }
}
else
    qDebug() << "erro no reply " << networkReply->errorString();


networkReply->deleteLater();

}
@

Thanks.

[andreyc]

Firefox says:
@
apphom.correios.com.br uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)
@
If you know this site and does not worry about wrong certificate then you can disable SSL verification for now.
@
QNetworkRequest request(QString("https://apphom.correios.com.br/SigepMasterJPA/AtendeClienteService/AtendeCliente?wsdl");
QSslConfiguration sslConf = request.sslConfiguration();
sslConf.setPeerVerifyMode(QSslSocket::VerifyNone);
request.setSslConfiguration(sslConf);
networkManager.get(request);
@

[jeanrl]

Perfect, it worked.
This site is the postal service here in Brazil, so no problems with the certificate.

One more question:

In that reply I have all the services available, but how do I consume these services? I know I have to send a xml with the parameters, but do not know how, can you give me an idea of how to do this?

Thank you very much.

P.S. I'm sorry if I seem to be taking advantage, is not found virtually no material on the Internet, especially for those who have no experience with Web Service with Qt.

[andreyc]

I never used SOAP in practice so don't know exactly.
I guess you need to send a request to some url with an XML body that has parameters.

[jeanrl]

Ok Andreyc

You helped me a lot.

Thanks very mouch.

[jeanrl]

It finally worked:

@
QNetworkRequest request;
request.setUrl(
QUrl("https://apphom.correios.com.br/SigepMasterJPA/AtendeClienteService/AtendeCliente?wsdl"));
request.setHeader( QNetworkRequest::ContentTypeHeader,
QVariant( QString("text/xml;charset=utf-8")));
request.setHeader(QNetworkRequest::ContentLengthHeader,
QVariant( qulonglong(arr.size()) ));
request.setAttribute(QNetworkRequest::CacheLoadControlAttribute,
QVariant( int(QNetworkRequest::AlwaysNetwork) ));
QSslConfiguration sslConf = request.sslConfiguration();
sslConf.setPeerVerifyMode(QSslSocket::VerifyNone);
request.setSslConfiguration(sslConf);

m_manager.post(request,xml);

connect(&m_manager,SIGNAL(finished(QNetworkReply*)),this,
            SLOT(slotRequestFinished(QNetworkReply*)));

@

Thanks again Andreyc.

[andreyc]

Thank you for sharing a solution.