Resume download with QHttp

[THRESHE]

Hello everyone
I'm writing an app that downloads data from the Internet ( like FlashGet or Download Master ). I need to resume download of a file. I use QHttp like

file_ = new QFile(GetDownloadName());
	file_->open(QIODevice::Append);
 
	QUrl url(downloadURL_);
	http_.setHost(url.host());
	http_.get(url.path(), file_);

file_ = new QFile(GetDownloadName());
	file_->open(QIODevice::Append);

	QUrl url(downloadURL_);
	http_.setHost(url.host());
	http_.get(url.path(), file_);

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Maybe I should use some different function like QHttp::request ?

[jpn]

Perhaps QHttp::request() and "Content-Range" header field?

[THRESHE]

Thanks. It seems that my guess was right

[THRESHE]

It's strange I'm trying to use QHttp::request like this

file_ = new QFile(GetDownloadName());
	file_->open(QIODevice::Append);
 
	QUrl url(downloadURL_);
	http_.setHost(url.host());
 
	QHttpRequestHeader header("GET", url.path());
	header.addValue("Content-Range", "bytes 21010-47021/47022");
	qDebug()<<header.toString();
 	http_.request(header,0, file_);

file_ = new QFile(GetDownloadName());
	file_->open(QIODevice::Append);

	QUrl url(downloadURL_);
	http_.setHost(url.host());

	QHttpRequestHeader header("GET", url.path());
	header.addValue("Content-Range", "bytes 21010-47021/47022");
	qDebug()<<header.toString();
 	http_.request(header,0, file_);

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But it downloads the whole file not just 21010-47021 bytes

[jpn]

Oops, "Content-Range" is a field of server response header. I think the corresponding client request header field is actually just "Range".

[nhs_0702]

i want find document funcition header.addValue("Content-Range", "bytes 21010-47021/47022");

[nhs_0702]

i dont known qHeader.addValue("Range", "bytes 21010-47021/47022");

[nhs_0702]

void	BrowseWidgetImpl::downloadSubjectForNextThread()
{
	if(nextThreadConnection.state() == QHttp::Reading)
	{
		reloadCompleted();
		return;
	}
	nextThreadConnection.abort();
	if(nextThreadBuffer)
	{
		delete	nextThreadBuffer;
		nextThreadBuffer = NULL;
	}
	QUrl	subjectUrl(threadUrl.mid(0, threadUrl.lastIndexOf("dat/")) + "subject.txt");
//	nextThreadBuffer.size(0);
	nextThreadBuffer = new	QBuffer;
	if(!nextThreadBuffer->open(QIODevice::ReadWrite))
	{
		qDebug() << "Can't open buffer in downloadSubjectForNextThread()";
		return;
	}
	QHttpRequestHeader	header;
	nextThreadConnection.setProxy(*networkProxy);
	nextThreadConnection.setHost(subjectUrl.host());
	header.setRequest("GET", subjectUrl.path());
	header.addValue("Host", subjectUrl.host());
	header.addValue("User-Agent", QString("Monazilla/1.00(%1)").arg(APPNAME));
	subjectGetId = nextThreadConnection.request(header, 0, nextThreadBuffer);
}

void	BrowseWidgetImpl::downloadSubjectForNextThread()
{
	if(nextThreadConnection.state() == QHttp::Reading)
	{
		reloadCompleted();
		return;
	}
	nextThreadConnection.abort();
	if(nextThreadBuffer)
	{
		delete	nextThreadBuffer;
		nextThreadBuffer = NULL;
	}
	QUrl	subjectUrl(threadUrl.mid(0, threadUrl.lastIndexOf("dat/")) + "subject.txt");
//	nextThreadBuffer.size(0);
	nextThreadBuffer = new	QBuffer;
	if(!nextThreadBuffer->open(QIODevice::ReadWrite))
	{
		qDebug() << "Can't open buffer in downloadSubjectForNextThread()";
		return;
	}
	QHttpRequestHeader	header;
	nextThreadConnection.setProxy(*networkProxy);
	nextThreadConnection.setHost(subjectUrl.host());
	header.setRequest("GET", subjectUrl.path());
	header.addValue("Host", subjectUrl.host());
	header.addValue("User-Agent", QString("Monazilla/1.00(%1)").arg(APPNAME));
	subjectGetId = nextThreadConnection.request(header, 0, nextThreadBuffer);
}

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