400 Response when sending POST

[morlecapka]

Hey,
So first of all: im not that experienced with C++ neither Qt. This is a school project.

Im trying to send a POST-request to my PHP-script which outputs data corresponding to the given input, so for example:
I have two Textboxes, name and action, which should get sent to the webserver (127.0.0.1/index.php?name=morle&action=nothing)

Now i want to store the output given by the PHP-script as a string, which should not be hard. Im pretty much done i think, but im getting a BAD REQUEST whenever i push the Button to send the Data.

QByteArray abfrage;
    abfrage.append("username="+(ui->lineEdit_username->text())+"&action="+(ui->lineEdit_action->text()));
    QNetworkAccessManager *nwam = new QNetworkAccessManager;
       QNetworkRequest request(QUrl("http:///127.0.0.1/index.php"));
       QByteArray data;
       QUrlQuery params;
       params.addQueryItem("user", username );
       params.addQueryItem("action", action);
       data.append(params.toString());
       data.remove(0,1);
       QNetworkReply *reply = nwam->post(request,data);
       QEventLoop event;
       connect(reply,SIGNAL(finished()),&event,SLOT(quit()));
       event.exec();
       QString html = reply->readAll();
       QByteArray bytes = reply->readAll();
       QString str = QString::fromUtf8(bytes.data(), bytes.size());
       int statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
       qDebug() << QVariant(statusCode).toString();

Now the "html" string obviously gives me the BAD REQUEST code.

I can't figure out what im doing wrong, so i hope somebody can help me out.

[SGaist]

Hi and welcome to devnet,

You are mentioning output.php in your explanation but in your code you are sending to index.php.

[morlecapka]

@SGaist
Thanks for that fast response! It was a mistake i made - the file is called index.php! Sorry for that.

[KillerSmath]

@morlecapka

1. Why are you using data.remove(0,1); to remove the first character of data bytearray ?
2. You have mentioned 2 parameters: name and action but in post request, you have used user and action, are these the correct parametes ?.

[morlecapka]

1. I honestly dont know. Tried something from Google and forgot to remove it.
2. Yes, im passing the correct parameters. The first part was written out of my head - didnt remember the parameters i used in the code. It was just an example

[raven-worx]

@morlecapka
what type of server is this? Basically the server can send an 400 Error anytime if it doesn't comply it's expectations.
Also you have 3 slashes in your request url.

[morlecapka]

@raven-worx I feel so stupid right now. The third slash was the problem. Thank you very much.