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Qt4-preview-feedback Archive, April 2008
FTP requests through an HttpCachingProxy ?

Message 1 in thread

Hi,

Did anyone manage to send an FTP request through an HTTP caching proxy ?

Seems that sending an HTTP request works fine but it never works for FTP.
Attached an example. I compiled it using:
g++ -o p p.cc `pkg-config  QtCore QtNetwork QtGui --cflags --libs`

Using 4.4 RC1

Cheers,

-- 
 [ signature omitted ] 

#include <qapplication.h>
#include <qnetworkproxy.h>
#include <qnetworkaccessmanager.h>
#include <qnetworkrequest.h>
#include <qnetworkreply.h>

#include <iostream>

class Req : public QObject {
  Q_OBJECT
public:
  Req() {
    p.setHostName("172.16.42.42");
    p.setPort(8080);
    p.setType(QNetworkProxy::HttpCachingProxy);
    m.setProxy(p);

    QNetworkRequest rq1(QUrl("ftp://foolab.org";));
    r1 = m.get(rq1);

    QNetworkRequest rq2(QUrl("http://foolab.org";));
    r2 = m.get(rq2);

    QObject::connect(r1, SIGNAL(readyRead()), this, SLOT(r1Read()));
    QObject::connect(r2, SIGNAL(readyRead()), this, SLOT(r2Read()));
  }

private:
  QNetworkAccessManager m;
  QNetworkProxy p;
  QNetworkReply *r1, *r2;

private Q_SLOTS:
void r1Read() {
  qDebug() << "Request 1 " << r1->readAll();
}

  void r2Read() {
    qDebug() << "Request 2 " << r2->readAll();
  }

};

int main(int argc, char *argv[]) {
  QApplication a(argc, argv);
  Req r;
  a.exec();

  return 0;
}

// moc output:
/****************************************************************************
** Meta object code from reading C++ file 'p.cc'
**
** Created: Thu Apr 10 17:08:19 2008
**      by: The Qt Meta Object Compiler version 59 (Qt 4.4.0-rc1)
**
** WARNING! All changes made in this file will be lost!
*****************************************************************************/

#if !defined(Q_MOC_OUTPUT_REVISION)
#error "The header file 'p.cc' doesn't include <QObject>."
#elif Q_MOC_OUTPUT_REVISION != 59
#error "This file was generated using the moc from 4.4.0-rc1. It"
#error "cannot be used with the include files from this version of Qt."
#error "(The moc has changed too much.)"
#endif

QT_BEGIN_MOC_NAMESPACE
static const uint qt_meta_data_Req[] = {

 // content:
       1,       // revision
       0,       // classname
       0,    0, // classinfo
       2,   10, // methods
       0,    0, // properties
       0,    0, // enums/sets

 // slots: signature, parameters, type, tag, flags
       5,    4,    4,    4, 0x08,
      14,    4,    4,    4, 0x08,

       0        // eod
};

static const char qt_meta_stringdata_Req[] = {
    "Req\0\0r1Read()\0r2Read()\0"
};

const QMetaObject Req::staticMetaObject = {
    { &QObject::staticMetaObject, qt_meta_stringdata_Req,
      qt_meta_data_Req, 0 }
};

const QMetaObject *Req::metaObject() const
{
    return &staticMetaObject;
}

void *Req::qt_metacast(const char *_clname)
{
    if (!_clname) return 0;
    if (!strcmp(_clname, qt_meta_stringdata_Req))
	return static_cast<void*>(const_cast< Req*>(this));
    return QObject::qt_metacast(_clname);
}

int Req::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
    _id = QObject::qt_metacall(_c, _id, _a);
    if (_id < 0)
        return _id;
    if (_c == QMetaObject::InvokeMetaMethod) {
        switch (_id) {
        case 0: r1Read(); break;
        case 1: r2Read(); break;
        }
        _id -= 2;
    }
    return _id;
}
QT_END_MOC_NAMESPACE

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Message 2 in thread

On Thu, Apr 10, 2008 at 04:39:24PM +0200, Thiago Macieira wrote:
> On Thursday 10 April 2008 16:29:52 Mohammed Sameer wrote:
> > Did anyone manage to send an FTP request through an HTTP caching proxy ?
> 
> This is not supported yet.

Thanks for info.

Any plans to support that in the future ?
Problem is, QtWebKit tries to grab files from FTP servers and there's no way to disable that.
I guess I need to implement a "hack" to prevent it from doing that.

Cheers,

-- 
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