QHttp : Strange behavior with different host!

[Ferdous]

I've written a class that downloads a single file. Surprisingly, I've noticed that the program successfully downloads one file but fails for another file that has a different host.

I'm curious to know the reason. Please tell me if you can figure out.

Here are my classes:

myhttp.h file:

#ifndef MYHTTP_H
#define MYHTTP_H
 
#include <QObject>
#include <QHttp>
#include <QFile>
 
class MyHttp : public QObject
{
	Q_OBJECT
 
private:
	QHttp http;
	QFile file;
 
public:
	MyHttp(const QString& strFilePath, QObject* parent = 0);
 
signals:
	void finished();
 
private slots:
	void myHttpDone(bool error);
};
 
#endif

#ifndef MYHTTP_H
#define MYHTTP_H

#include <QObject>
#include <QHttp>
#include <QFile>

class MyHttp : public QObject
{
	Q_OBJECT

private:
	QHttp http;
	QFile file;

public:
	MyHttp(const QString& strFilePath, QObject* parent = 0);

signals:
	void finished();

private slots:
	void myHttpDone(bool error);
};

#endif

To copy to clipboard, switch view to plain text mode 

myhttp.cpp file:

#include <QtNetwork>
 
#include <QFileInfo>
#include <QUrl>
 
#include "MyHttp.h"
 
MyHttp::MyHttp(const QString& strFilePath, QObject* parent /* = 0 */) : QObject(parent)
{
	connect(&http, SIGNAL(done(bool)), this, SLOT(myHttpDone(bool)));
 
	QUrl url(strFilePath);
 
	QFileInfo fileInfo(url.path());
	file.setFileName(fileInfo.fileName());
	file.open(QIODevice::WriteOnly);
 
	http.setHost(url.host(), url.port(80));
	http.get(url.path(), &file);
	http.close();
}
 
void MyHttp::myHttpDone(bool error)
{
	file.close();
 
	if (error == true)
	{
		file.remove();
	}
 
	emit finished();
}

#include <QtNetwork>

#include <QFileInfo>
#include <QUrl>

#include "MyHttp.h"

MyHttp::MyHttp(const QString& strFilePath, QObject* parent /* = 0 */) : QObject(parent)
{
	connect(&http, SIGNAL(done(bool)), this, SLOT(myHttpDone(bool)));

	QUrl url(strFilePath);

	QFileInfo fileInfo(url.path());
	file.setFileName(fileInfo.fileName());
	file.open(QIODevice::WriteOnly);

	http.setHost(url.host(), url.port(80));
	http.get(url.path(), &file);
	http.close();
}

void MyHttp::myHttpDone(bool error)
{
	file.close();

	if (error == true)
	{
		file.remove();
	}

	emit finished();
}

To copy to clipboard, switch view to plain text mode 

main.cpp file:

#include <QCoreApplication>
 
#include "MyHttp.h"
 
int main(int argc, char *argv[])
{
	QCoreApplication app(argc, argv);
 
	// program doesn't work for this link
//	MyHttp file("http://thedailystar.net/images/tdsmainlogo.jpg");
 
	// program works for this link
	MyHttp file("http://ahmadferdous.googlepages.com/Ferdous.JPG");
 
	QObject::connect(&file, SIGNAL(finished()), &app, SLOT(quit()));
 
	return app.exec();
}

#include <QCoreApplication>

#include "MyHttp.h"

int main(int argc, char *argv[])
{
	QCoreApplication app(argc, argv);

	// program doesn't work for this link
//	MyHttp file("http://thedailystar.net/images/tdsmainlogo.jpg");

	// program works for this link
	MyHttp file("http://ahmadferdous.googlepages.com/Ferdous.JPG");

	QObject::connect(&file, SIGNAL(finished()), &app, SLOT(quit()));

	return app.exec();
}

To copy to clipboard, switch view to plain text mode