Upload request

[squidge]

If you want examples, you can use something like Etherpeek with a web page which allows you to upload data from your pc (eg. imageshack).

However, this will not tell you what YOUR server supports.

You can also use it once you have written your code to ensure it is sending the correct data. Its much better than trying to code "blind".

[ChrisW67]

http://www.w3.org/TR/html401/interact/forms.html

In particular, the section on "Form content types". For a large file (not text or more than a few tens of bytes) you typically want a Content-Type of "multipart/form-data" rather than "application/x-www-form-urlencoded" in your headers. Your request payload then needs to be encoded suitably.

[dipeshtech]

Thanks all. I did 2 mistakes one was not encoding the data to be sent and other was (silly) by not specifying the correct URL of the page. The code that works for me is below:

uploadmanager::uploadmanager()
{
    connect(&manager, SIGNAL(finished(QNetworkReply*)),
            SLOT(uploadFinished(QNetworkReply*)));
}
 
 
void uploadmanager::doUpload()
{
    QStringList args;
    QString message_d = QString("Unable to open file");
    args<<"E:\\SMS\\spam_freq.csv";
 
    foreach (QString arg, args) {
 
       QFile file(arg);
 
       if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
       {
           QMessageBox::information(this, "Error", message_d);
           return;
       }
 
       file.open(QIODevice::ReadOnly | QIODevice::Text);
       QByteArray data(file.readAll());                                                         
       QByteArray sdata;
       QUrl params;
       params.addQueryItem("data", data);                       //I wasn't encoding the data, one error was here
       sdata.append(params.toString());
 
 
       file.close();
 
 
 
    QNetworkRequest request;
 
    request.setUrl(QUrl("http://myserv.com/smsspam/smsspam.php"));   // i committed a silly blunder here by not including th php page in URL ( which i came to know   by checking the reply content) 
 
 
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
 
 
    QNetworkReply *reply = manager.post(request, sdata);
    currentUploads.append(reply);
}
 
}
 
void uploadmanager::uploadFinished(QNetworkReply *reply)
{
 
    if (reply->error())
    {
        QByteArray response = reply->readAll();
        QFile file_spf("E:\\SMSAin\\dlog.txt");
        file_spf.open(QIODevice::WriteOnly | QIODevice::Text);
        QTextStream spf_in(&file_spf);
        spf_in<<response;
 
        QString message_er = QString("Error in Upload");
        QMessageBox::information(this, "Err", message_er);
    }
    else
    {
        QString message_d = QString("Upload Complete");
        QMessageBox::information(this, "Upload Complete", message_d);
 
    }
 
    currentUploads.removeAll(reply);
    reply->deleteLater();
 
    if (currentUploads.isEmpty())
        return;
 
}

uploadmanager::uploadmanager()
{
    connect(&manager, SIGNAL(finished(QNetworkReply*)),
            SLOT(uploadFinished(QNetworkReply*)));
}


void uploadmanager::doUpload()
{
    QStringList args;
    QString message_d = QString("Unable to open file");
    args<<"E:\\SMS\\spam_freq.csv";
   
    foreach (QString arg, args) {

       QFile file(arg);

       if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
       {
           QMessageBox::information(this, "Error", message_d);
           return;
       }

       file.open(QIODevice::ReadOnly | QIODevice::Text);
       QByteArray data(file.readAll());                                                         
       QByteArray sdata;
       QUrl params;
       params.addQueryItem("data", data);                       //I wasn't encoding the data, one error was here
       sdata.append(params.toString());
       

       file.close();



    QNetworkRequest request;

    request.setUrl(QUrl("http://myserv.com/smsspam/smsspam.php"));   // i committed a silly blunder here by not including th php page in URL ( which i came to know   by checking the reply content) 


    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");


    QNetworkReply *reply = manager.post(request, sdata);
    currentUploads.append(reply);
}

}

void uploadmanager::uploadFinished(QNetworkReply *reply)
{
    
    if (reply->error())
    {
        QByteArray response = reply->readAll();
        QFile file_spf("E:\\SMSAin\\dlog.txt");
        file_spf.open(QIODevice::WriteOnly | QIODevice::Text);
        QTextStream spf_in(&file_spf);
        spf_in<<response;

        QString message_er = QString("Error in Upload");
        QMessageBox::information(this, "Err", message_er);
    }
    else
    {
        QString message_d = QString("Upload Complete");
        QMessageBox::information(this, "Upload Complete", message_d);

    }

    currentUploads.removeAll(reply);
    reply->deleteLater();

    if (currentUploads.isEmpty())
        return;

}

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