I don't need some headers in QNetworkRequest

suclida

For example, I don't need the header "User-Agent:Firefox...".
So I program like this:
QNetworkRequest req;
req.setRawHeader("User-Agent", "");
But it is useless;
Or I don't set the header, but the User-Agent will still be in the header of http.
Thank you for your help!

koahnig

@suclida

When it is useless, why are you setting it?

suclida

@koahnig Or I don't set the header, but the User-Agent will still be in the header of http.

koahnig

@suclida

Setting the raw header make only sense IMHO when you have to do something off the main track.
Check out the detailed infomration for QNetowrkAccessManager

The second sets the "User-Agent" , but you do not have to do it. This is merely a example of a more enhanced usage.

Chris Kawa

req.setRawHeader("Foo", "");

This does not remove a header. It sets header value to be an empty string. To remove a header pass an empty array:

req.setRawHeader("Foo", QByteArray());

You can also set or clear known headers like User-Agent via setHeader():

req.setHeader(QNetworkRequest::UserAgentHeader, QVariant());

Ivan B

@Chris-Kawa This is not working for the headers I set:

request.setRawHeader("Accept-Encoding", QByteArray());
request.setRawHeader("Accept-Language", QByteArray());

I still see in Wireshark that the headers are not gone

Chris Kawa

@Ivan-B Seems like a long standing bug: QTBUG-9463. There even was a patch to fix this going through but it got abandoned for some reason. You might ask the devs on the mailing list what happened.