[Qt-interest] QT 4.6: Strange behavior while using QNAM for multiple HTTP requests

Thiago Macieira thiago at kde.org
Mon May 3 08:24:07 CEST 2010


Em Segunda-feira 3. Maio 2010, às 07.49.20, Mandeep Sandhu escreveu:
> <snip>
> void download() {
>     for (int i=1; i<3; i++) {
>         QString urlStr = QString("http://localhost/test%1.jpg").arg(i);
>         qDebug() << urlStr;
> 
>         QNetworkRequest req;
>         req.setUrl(QUrl(urlStr));
>         qDebug() << "Pipelining allowed -"
>                  <<
> req.attribute(QNetworkRequest::HttpPipeliningAllowedAttribute).toBool();
> 
>         mgr->get(req);
>         connect(mgr, SIGNAL(finished(QNetworkReply*)),
>                 this, SLOT(getData(QNetworkReply*)));
>     }
> }

Note the connect() inside the for loop. 

You said:
> The finished signal of QNAM is emitted TWICE for each URL,

That is incorrect. The signal is emitted only once. But the slot is called 
twice because you connected the signal twice to it.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
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