[Interest] QHttp post with headers
Viktor Engelmann
viktor.engelmann at qt.io
Mon Aug 22 11:11:25 CEST 2016
We are currently working on that for WebEngine.
See https://codereview.qt-project.org/#/c/167422/
On 13.07.2016 09:27, Reinhardt Behm wrote:
> On Friday 20 May 2016 15:27:27 Eric Laffoon wrote:
>> > Hi all,
>> >
>> > It's a little emberassing but I'm still using some Qt3 software. Kommander
>> > is partially ported to Qt4 and I've been running my business with it since
>> > 2007. I'm rebuilding my biz and hope to have more time in the future. I was
>> > writing parser code a few years back but I'm really rusty now with C++.
>> >
>> > I need to be able to post data and I need to be able to send a custom header
>> > which includes the user key as a header. It's very important and it looked
>> > easy but I've been coding late at night several days with no joy.
>> >
>> > Can anyone recommend some Qt3 or Qt4 code that uses QHttp and associated
>> > network classes to post with additional header data? I've managed to get
>> > QHttp::post( const QString & path, const QByteArray & data, QIODevice * to =
>> > 0 ) to work but it looks like I need to use the request function instead.
>> >
>> > This is the post function.
>> >
>> >
>> > int Http::httpPost()
>> > {
>> > m_data = "";
>> > QString hdr;
>> > QString str;
>> > QByteArray arData;
>> > QHttpResponseHeader header;
>> >
>> > for (QMapConstIterator<QString, QString> it = m_headers.begin(); it !=
>> > m_headers.end(); it++)
>> > hdr += QString("%1 : %2\r\n").arg(it.key()).arg(it.data());
>> > hdr += ""; //"\r\n";
>> >
>> > header = QHttpRequestHeader::QHttpRequestHeader(const hdr&);
>> >
>> > for (QMapConstIterator<QString, QString> it = m_values.begin(); it !=
>> > m_values.end(); it++)
>> > str += QString("%1%2=%3").arg(it != m_values.begin() ? "&" : "")
>> > .arg(it.key()).arg(it.data());
>> >
>> > arData.duplicate(static_cast<const char *>(str), str.length());
>> > job->request(header&, arData&, 0);
>> >
>> > return 1; //not used
>> > }
>> >
>> > QString Http::httpShowValues()
>> > {
>> > QString str;
>> > for (QMapConstIterator<QString, QString> it = m_values.begin(); it !=
>> > m_values.end(); it++)
>> > {
>> > str += QString("%1\t%2%3") .arg(it.key()).arg(it.data()).arg(it !=
>> > m_values.end() ? "\n" : "");
>> > }
>> > return str;
>> > }
>> >
>> >
>> > This is my current make error
>> >
>> > ../../src/http.cpp: In member function 'int Http::httpPost()':
>> > ../../src/http.cpp:136:51: error: expected primary-expression before 'const'
>> > header = QHttpRequestHeader::QHttpRequestHeader(const hdr&);
>> > ^
>> > ../../src/http.cpp:136:61: error: cannot call constructor
>> > 'QHttpRequestHeader::QHttpRequestHeader' directly [-fpermissive]
>> > header = QHttpRequestHeader::QHttpRequestHeader(const hdr&);
>> > ^
>> > ../../src/http.cpp:136:61: error: for a function-style cast, remove the
>> > redundant '::QHttpRequestHeader' [-fpermissive]
>> >
>> > Yes, I know I have a constructor in there, but QHttpHeader::setValue is pure
>> > virtual. I can't remember how to inherit that and use it in a QHttp object.
>> >
>> > I don't really have a week to brush up on C++. Just need to see how to
>> > construct a request with headers and data.
>> >
> Eric,
> I was in the same situation some time ago. The original program was done
> during Qt3.3 times and I had to port it to Qt5. Nearly all HTTP server stuff
> is gone. I ended up, doing it myself. It isn't that hard.
> If you give me until next week, I can extract the relevant parts (more or less
> 3 classes) and give it to you.
--
Viktor Engelmann
Software Engineer
The Qt Company GmbH
Rudower Chaussee 13
D-12489 Berlin
Viktor.Engelmann at qt.io
+49 151 26784521
http://qt.io
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