[PyQt] QNetworkReply.header(QNetworkRequest.ContentLengthHeader) returns None

[redstone-cold]

I am not sure if this is a bug with the server or PyQt/Qt, but when I use Python urllib to make a same request , I get the correct  Content-Length








在2016年05月18 14时07分, "Florian Bruhin"<me at the-compiler.org>写道:

* redstone-cold <redstone-cold at 163.com> [2016-05-18 13:35:55 +0800]:
> reply is type of QNetworkReply,
> QByteArray(b'Content-Length'), PyQt5.QtCore.QByteArray(b'0, 33259656')
> is  the Content-Length pair returned by reply.rawHeaderPairs(), in such case,
> reply.header(QNetworkRequest.ContentLengthHeader) just returns None,
> I wonder is this a bug or not?

Looking at RFC 2616 (the HTTP specification):
https://tools.ietf.org/html/rfc2616#section-14.13

    [...]

      Content-Length = "Content-Length" ":" 1*DIGIT

   An example is

      Content-Length: 3495

and:

   DIGIT = <any US-ASCII digit "0".."9">

The thing you're showing above (b'0, 33259656') thus is an invalid
value, so Qt is probably refusing to parse it.

In other words, whatever is sending that header is buggy.

Florian

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