qnetworkreply show always "Operation canceled" with 200 code

[majatu]

i made a request to http://yandex.ru/yandsearch?text=123&lr=213 with proxy

{
        proxy.setType(QNetworkProxy::HttpProxy);
        proxy.setHostName(QString("46.42.44.212"));
        proxy.setPort(3128);
        QNetworkProxy::setApplicationProxy(proxy);
}

{
        proxy.setType(QNetworkProxy::HttpProxy);
        proxy.setHostName(QString("46.42.44.212"));
        proxy.setPort(3128);
        QNetworkProxy::setApplicationProxy(proxy);
}

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and qwebview

MyNetworkAccessManager *nam = new MyNetworkAccessManager();
nam->setCookieJar(new QNetworkCookieJar());
ui->webView->page()->setNetworkAccessManager(nam);
 
QWebSettings::globalSettings()->setAttribute(QWebSettings::AutoLoadImages, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::JavaEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::JavascriptEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::PluginsEnabled, true);
 
ui->webView->page()->setLinkDelegationPolicy(QWebPage::DelegateAllLinks);
 
ui->webView->setUrl(QUrl("http://yandex.ru/yandsearch?text=123&lr=213"));

MyNetworkAccessManager *nam = new MyNetworkAccessManager();
nam->setCookieJar(new QNetworkCookieJar());
ui->webView->page()->setNetworkAccessManager(nam);

QWebSettings::globalSettings()->setAttribute(QWebSettings::AutoLoadImages, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::JavaEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::JavascriptEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::PluginsEnabled, true);

ui->webView->page()->setLinkDelegationPolicy(QWebPage::DelegateAllLinks);

ui->webView->setUrl(QUrl("http://yandex.ru/yandsearch?text=123&lr=213"));

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for cookies i have my MyNetworkAccessManager in createRequest(Operation op, const QNetworkRequest &request, QIODevice *outgoingData)

if(static_cast<QNetworkRequest::LoadControl>request.attribute(QNetworkRequest::CookieLoadControlAttribute, QNetworkRequest::Automatic).toInt()) == QNetworkRequest::Automatic)
   {
       if (this->cookieJar())
       {
           QList<QNetworkCookie> cookies = this->cookieJar()->cookiesForUrl(request.url());
           if (!cookies.isEmpty())
           {
               myReq.setHeader(QNetworkRequest::CookieHeader, qVariantFromValue(cookies));
           }
       }
   }

if(static_cast<QNetworkRequest::LoadControl>request.attribute(QNetworkRequest::CookieLoadControlAttribute, QNetworkRequest::Automatic).toInt()) == QNetworkRequest::Automatic)
   {
       if (this->cookieJar())
       {
           QList<QNetworkCookie> cookies = this->cookieJar()->cookiesForUrl(request.url());
           if (!cookies.isEmpty())
           {
               myReq.setHeader(QNetworkRequest::CookieHeader, qVariantFromValue(cookies));
           }
       }
   }

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and always get same error

"error string: Operation canceled" 
"error url: http://yandex.ru/showcaptcha?retpath=http://yandex.ru/yandsearch?text=123&lr=213&t=0/1314734922/b029d1247fd1f0e0111636a2a04cc9f9&cc=1&" 
"error status code:200"

"error string: Operation canceled" 
"error url: http://yandex.ru/showcaptcha?retpath=http://yandex.ru/yandsearch?text=123&lr=213&t=0/1314734922/b029d1247fd1f0e0111636a2a04cc9f9&cc=1&" 
"error status code:200"

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where is the problem? i get html web page with error and nothing display

[wysota]

Does it work properly if you don't use the proxy?

[majatu]

Yes, without proxy everything is ok. But point is to use connection only with proxy, because of ip address. And without proxy i don't have redirect to captcha page.

here is sniffer 1-st request

GET http://yandex.ru/yandsearch?text=123&lr=213 HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Host: yandex.ru
Connection: Keep-Alive
Accept-Encoding: gzip
Accept-Language: ru-RU,en,*

GET http://yandex.ru/yandsearch?text=123&lr=213 HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Host: yandex.ru
Connection: Keep-Alive
Accept-Encoding: gzip
Accept-Language: ru-RU,en,*

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HTTP/1.1 302 Found
Location: http://yandex.ru/showcaptcha?retpath=http%3A//yandex.ru/yandsearch%3Ftext%3D123%26lr%3D213&t=0/1314772040/cf38cf989d28e76e7da71a00690186d6&cc=1&
Set-Cookie: spravka=dD0xMjgzMjM2MDQwO2k9NDYuNDIuNDQuMjEyO3U9MTI4MzIzNjA0MDk4OTMzMzI4MDtoPTdmMzUxNWJlMTBkYTQ5ZGZiNGE4ZTkyZjY0OWZkY2M2; domain=.yandex.ru; path=/; expires=Fri, 30-Sep-2011 06:27:20 GMT
Proxy-Connection: Close

HTTP/1.1 302 Found
Location: http://yandex.ru/showcaptcha?retpath=http%3A//yandex.ru/yandsearch%3Ftext%3D123%26lr%3D213&t=0/1314772040/cf38cf989d28e76e7da71a00690186d6&cc=1&
Set-Cookie: spravka=dD0xMjgzMjM2MDQwO2k9NDYuNDIuNDQuMjEyO3U9MTI4MzIzNjA0MDk4OTMzMzI4MDtoPTdmMzUxNWJlMTBkYTQ5ZGZiNGE4ZTkyZjY0OWZkY2M2; domain=.yandex.ru; path=/; expires=Fri, 30-Sep-2011 06:27:20 GMT
Proxy-Connection: Close

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here is sniffer 2-nd request

GET http://yandex.ru/showcaptcha?retpath=http%3A//yandex.ru/yandsearch%3Ftext%3D123%26lr%3D213&t=0/1314772040/cf38cf989d28e76e7da71a00690186d6&cc=1& HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Host: yandex.ru
Cookie: spravka=dD0xMjgzMjM2MDQwO2k9NDYuNDIuNDQuMjEyO3U9MTI4MzIzNjA0MDk4OTMzMzI4MDtoPTdmMzUxNWJlMTBkYTQ5ZGZiNGE4ZTkyZjY0OWZkY2M2
Connection: Keep-Alive
Accept-Encoding: gzip
Accept-Language: ru-RU,en,*

GET http://yandex.ru/showcaptcha?retpath=http%3A//yandex.ru/yandsearch%3Ftext%3D123%26lr%3D213&t=0/1314772040/cf38cf989d28e76e7da71a00690186d6&cc=1& HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1
Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Host: yandex.ru
Cookie: spravka=dD0xMjgzMjM2MDQwO2k9NDYuNDIuNDQuMjEyO3U9MTI4MzIzNjA0MDk4OTMzMzI4MDtoPTdmMzUxNWJlMTBkYTQ5ZGZiNGE4ZTkyZjY0OWZkY2M2
Connection: Keep-Alive
Accept-Encoding: gzip
Accept-Language: ru-RU,en,*

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HTTP/1.1 200 OK
Content-Length: 8706
Proxy-Connection: Close
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html id="nojs" xmlns="http://www.w3.org/1999/xhtml">
<head>
  <meta name="MSSmartTagsPreventParsing" content="true" />
  <meta http-equiv="Content-Type" content=
  "text/html; charset=utf-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
  <!--[if gt IE 7]><!-->
  <link rel="stylesheet" href="/captcha/_index.css" type="text/css" />
  <!--<![endif]-->
  <!--[if lt IE 8]><link rel=stylesheet href="/captcha/_index.ie.css"><![endif]-->
  <!--<link rel="shortcut icon" href="/captcha/favicon.ico" />-->
 
   <script type="text/javascript">
    function ShowText() {
        var d = document.getElementById("id_captcha_text");
        d.style.display = (d.style.display == 'block') ? '' : 'block';
 
    }
   </script>
  <title>....!</title>
</head>
 
<body class="b-page">
  <table class="l-head l-head_type_userpic">
    <tr>
      <td class="l-head__g"></td>
 
      <td class="l-head__l">
        <div class="b-head-logo">
          <div class="b-head-logo__logo">
            <a class="b-head-logo__link" href=
            "http://www.yandex.ru"><img class="b-head-logo__img"
            border="0" alt="............" src=
            "http://yandex.st/lego/_/X31pO5JJJKEifJ7sfvuf3mGeD_8.png" /></a>
          </div>
        </div>
      </td>
 
      <td class="l-head__gl"></td>
 
      <td class="l-head__c">
        <table class="b-head-tabs g-js">
          <tr>
            <td>&nbsp;</td>
          </tr>
        </table>
 
        <div class="b-head-line">
          <strong class="b-head-name">.......</strong>
        </div>
 
        <div class="b-head-menu">
          <table class="b-hmenu">
            <tr>
              <td></td>
            </tr>
          </table>
        </div>
      </td>
 
      <td class="l-head__gr"></td>
 
      <td class="l-head__r">
        <table class="b-head-userinfo">
          <tr>
            <td class="b-head-userinfo__td"></td>
          </tr>
 
          <tr>
            <td class="b-head-userinfo__td" colspan="2"></td>
          </tr>
 
          <tr>
            <td class="b-head-userinfo__td" colspan="2"></td>
          </tr>
 
          <tr>
            <td class="b-head-userinfo__td" colspan="2"></td>
          </tr>
        </table>
      </td>
 
      <td class="l-head__g"></td>
    </tr>
  </table>
 
  <table class="l-page l-page_layout_16-60-16">
    <tr>
      <td class="l-page__gap"></td>
 
      <td class="l-page__left"></td>
 
      <td class="l-page__center">
        <div class="b-static-text">
          <p>...... .......... ........, .... .............., ...................... .. ............
          IP-............, ............ .... ............................. .... ........ .............. ....
          .................. ................ .......................... ............ .. .............</p>
 
          <p>.......... .................... .........., ...................., .............. .......... .. ................ .. ........
         .......... .. .............. .......................</p>
 
          <div style="color: red; font-weight: bold">
 
          </div>
 
          <div class="b-captcha">
            <form action="http://yandex.ru/checkcaptcha" method="GET">
              <input name="key" type="hidden" value="40KqcHZOa3NaotpMJvfQ3HxVWdYpBkf5_0/1314772040/cf38cf989d28e76e7da71a00690186d6_6f4b56a83b1d9a52837c261a67aa3912">
              <input name="retpath" type="hidden" value="http%3A//yandex.ru/yandsearch%3Ftext%3D123%26lr%3D213">
 
              <table class="b-captcha__layout">
                <tr>
                  <td><img src="http://yandex.ru/captchaimg?aHR0cDovL3UuY2FwdGNoYS55YW5kZXgubmV0L2ltYWdlP2tleT00MEtxY0haT2EzTmFvdHBNSnZmUTNIeFZXZFlwQmtmNQ,,_0/1314772040/cf38cf989d28e76e7da71a00690186d6_af1a3fd751282b35de22f9dfde1b2bbf" class="b-captcha__image" /></td>
 
                  <td><a href="javascript:void(0)" onClick="location.reload()">................ ............
                  ..........</a></td>
 
                  <td class="b-captcha__layout__g"></td>
 
                  <td class="b-captcha__layout__r"><a href=
                  "http://xml.yandex.ru/" class=
                  "b-captcha__xml-link">.............XML</a> ............ ......
                  .............. ..............</td>
                </tr>
 
                <tr>
                  <td><input name="rep" id="rep-id" class=
                  "b-captcha__input" autocomplete="off" />
                  </td>
 
                  <td colspan="3"><input type="submit" value=
                  ".................." class="b-captcha__submit" /></td>
                </tr>
              </table>
            </form>
          </div>
          <h4><a href="javascript:void(0)" class="b-captcha-text-link" style="text-decoration:none;border-bottom:1px dotted" onClick="ShowText();">............ ......
 
          ..................?</a></h4>
 
          <div class="b-captcha__text" id="id_captcha_text">
            <p>................, ............................ .............. ...................... .... ......,
            .. .............. ........................, .................... .. ........ .. ............ ..
            ........ IP-............. .. ........ ............ ...... .................... ........ ......
            ............ .......... .. .........., .......... ........ .... ................ ...... ..
            ............ ................ .... ............ .........................., .................. ..
            .............. IP. .. ........ ............ ................ .. ............ .... ............
            .................... ...... .. .............. ...................... ...............</p>
 
            <p>................, .... ................ .............. .................... ..................
            ................ ............ ............. .........................., ..............
            .................... .... ........ ........................ .................... .. .............. ....
            .................... .................., .... ...................... ..............................
            .................... .......................... ...... ........ .......... ................
            <a href="http://xml.yandex.ru" title=
            "............ / XML">.............XML</a>.</p>
 
            <p>................, ...... .. .......... ................ ......................
            ...................., .............. .......... ................ ............................
            .............. .. ............. .. ........ ............ ...................... ......
            .................. .....</p>
 
            <p>.......... ................, ...... ...... .................. .............. .............. ... 
            ....................-.................., ........................ ...... .................. ......
            .......... ..................... ................, ...... .......... .................. ..............
            .... .............. .............., ................, ........................ ................
            <a href="http://www.freedrweb.com/?lng=ru">CureIt</a>
            .... ..Dr.Web...</p>
 
            <p>........ .. ...... ................ ................ ...... ........ .... ............
            ............ ............ .......... ............ .................., ............................
            <a href=
            "http://feedback.yandex.ru/?from=captcha">............
            ................ ..........</a>.</p>
          </div>
        </div>
      </td>
 
      <td class="l-page__gap-right"></td>
 
      <td class="l-page__right"></td>
 
      <td class="l-page__gap"></td>
    </tr>
  </table>
 
  <div class="b-foot">
    <table class="b-foot__layout">
      <tr>
        <td class="b-foot__layout__gap"></td>
 
        <td class=
        "b-foot__layout__column b-foot__layout__column_left"></td>
 
        <td class="b-foot__layout__column">
          <div class="b-foot__links">
            <a class="b-foot__link" href=
            "http://feedback.yandex.ru/?from=captcha">................&nbsp;..........</a>
          </div>
        </td>
 
        <td class=
        "b-foot__layout__column b-foot__layout__column_right">
          <div class="b-copyright">
            ..&nbsp;1997...2011 ..<a class="b-copyright__link" href=
            "http://www.yandex.ru">............</a>..
          </div>
        </td>
 
        <td class="b-foot__layout__gap"></td>
      </tr>
    </table>
  </div>
</body>
</html>

HTTP/1.1 200 OK
Content-Length: 8706
Proxy-Connection: Close

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html id="nojs" xmlns="http://www.w3.org/1999/xhtml">
<head>
  <meta name="MSSmartTagsPreventParsing" content="true" />
  <meta http-equiv="Content-Type" content=
  "text/html; charset=utf-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
  <!--[if gt IE 7]><!-->
  <link rel="stylesheet" href="/captcha/_index.css" type="text/css" />
  <!--<![endif]-->
  <!--[if lt IE 8]><link rel=stylesheet href="/captcha/_index.ie.css"><![endif]-->
  <!--<link rel="shortcut icon" href="/captcha/favicon.ico" />-->

   <script type="text/javascript">
    function ShowText() {
        var d = document.getElementById("id_captcha_text");
        d.style.display = (d.style.display == 'block') ? '' : 'block';

    }
   </script>
  <title>....!</title>
</head>

<body class="b-page">
  <table class="l-head l-head_type_userpic">
    <tr>
      <td class="l-head__g"></td>

      <td class="l-head__l">
        <div class="b-head-logo">
          <div class="b-head-logo__logo">
            <a class="b-head-logo__link" href=
            "http://www.yandex.ru"><img class="b-head-logo__img"
            border="0" alt="............" src=
            "http://yandex.st/lego/_/X31pO5JJJKEifJ7sfvuf3mGeD_8.png" /></a>
          </div>
        </div>
      </td>

      <td class="l-head__gl"></td>

      <td class="l-head__c">
        <table class="b-head-tabs g-js">
          <tr>
            <td>&nbsp;</td>
          </tr>
        </table>

        <div class="b-head-line">
          <strong class="b-head-name">.......</strong>
        </div>

        <div class="b-head-menu">
          <table class="b-hmenu">
            <tr>
              <td></td>
            </tr>
          </table>
        </div>
      </td>

      <td class="l-head__gr"></td>

      <td class="l-head__r">
        <table class="b-head-userinfo">
          <tr>
            <td class="b-head-userinfo__td"></td>
          </tr>

          <tr>
            <td class="b-head-userinfo__td" colspan="2"></td>
          </tr>

          <tr>
            <td class="b-head-userinfo__td" colspan="2"></td>
          </tr>

          <tr>
            <td class="b-head-userinfo__td" colspan="2"></td>
          </tr>
        </table>
      </td>

      <td class="l-head__g"></td>
    </tr>
  </table>

  <table class="l-page l-page_layout_16-60-16">
    <tr>
      <td class="l-page__gap"></td>

      <td class="l-page__left"></td>

      <td class="l-page__center">
        <div class="b-static-text">
          <p>...... .......... ........, .... .............., ...................... .. ............
          IP-............, ............ .... ............................. .... ........ .............. ....
          .................. ................ .......................... ............ .. .............</p>

          <p>.......... .................... .........., ...................., .............. .......... .. ................ .. ........
         .......... .. .............. .......................</p>

          <div style="color: red; font-weight: bold">
           
          </div>

          <div class="b-captcha">
            <form action="http://yandex.ru/checkcaptcha" method="GET">
              <input name="key" type="hidden" value="40KqcHZOa3NaotpMJvfQ3HxVWdYpBkf5_0/1314772040/cf38cf989d28e76e7da71a00690186d6_6f4b56a83b1d9a52837c261a67aa3912">
              <input name="retpath" type="hidden" value="http%3A//yandex.ru/yandsearch%3Ftext%3D123%26lr%3D213">

              <table class="b-captcha__layout">
                <tr>
                  <td><img src="http://yandex.ru/captchaimg?aHR0cDovL3UuY2FwdGNoYS55YW5kZXgubmV0L2ltYWdlP2tleT00MEtxY0haT2EzTmFvdHBNSnZmUTNIeFZXZFlwQmtmNQ,,_0/1314772040/cf38cf989d28e76e7da71a00690186d6_af1a3fd751282b35de22f9dfde1b2bbf" class="b-captcha__image" /></td>

                  <td><a href="javascript:void(0)" onClick="location.reload()">................ ............
                  ..........</a></td>

                  <td class="b-captcha__layout__g"></td>

                  <td class="b-captcha__layout__r"><a href=
                  "http://xml.yandex.ru/" class=
                  "b-captcha__xml-link">.............XML</a> ............ ......
                  .............. ..............</td>
                </tr>

                <tr>
                  <td><input name="rep" id="rep-id" class=
                  "b-captcha__input" autocomplete="off" />
                  </td>

                  <td colspan="3"><input type="submit" value=
                  ".................." class="b-captcha__submit" /></td>
                </tr>
              </table>
            </form>
          </div>
          <h4><a href="javascript:void(0)" class="b-captcha-text-link" style="text-decoration:none;border-bottom:1px dotted" onClick="ShowText();">............ ......

          ..................?</a></h4>

          <div class="b-captcha__text" id="id_captcha_text">
            <p>................, ............................ .............. ...................... .... ......,
            .. .............. ........................, .................... .. ........ .. ............ ..
            ........ IP-............. .. ........ ............ ...... .................... ........ ......
            ............ .......... .. .........., .......... ........ .... ................ ...... ..
            ............ ................ .... ............ .........................., .................. ..
            .............. IP. .. ........ ............ ................ .. ............ .... ............
            .................... ...... .. .............. ...................... ...............</p>

            <p>................, .... ................ .............. .................... ..................
            ................ ............ ............. .........................., ..............
            .................... .... ........ ........................ .................... .. .............. ....
            .................... .................., .... ...................... ..............................
            .................... .......................... ...... ........ .......... ................
            <a href="http://xml.yandex.ru" title=
            "............ / XML">.............XML</a>.</p>

            <p>................, ...... .. .......... ................ ......................
            ...................., .............. .......... ................ ............................
            .............. .. ............. .. ........ ............ ...................... ......
            .................. .....</p>

            <p>.......... ................, ...... ...... .................. .............. .............. ... 
            ....................-.................., ........................ ...... .................. ......
            .......... ..................... ................, ...... .......... .................. ..............
            .... .............. .............., ................, ........................ ................
            <a href="http://www.freedrweb.com/?lng=ru">CureIt</a>
            .... ..Dr.Web...</p>

            <p>........ .. ...... ................ ................ ...... ........ .... ............
            ............ ............ .......... ............ .................., ............................
            <a href=
            "http://feedback.yandex.ru/?from=captcha">............
            ................ ..........</a>.</p>
          </div>
        </div>
      </td>

      <td class="l-page__gap-right"></td>

      <td class="l-page__right"></td>

      <td class="l-page__gap"></td>
    </tr>
  </table>

  <div class="b-foot">
    <table class="b-foot__layout">
      <tr>
        <td class="b-foot__layout__gap"></td>

        <td class=
        "b-foot__layout__column b-foot__layout__column_left"></td>

        <td class="b-foot__layout__column">
          <div class="b-foot__links">
            <a class="b-foot__link" href=
            "http://feedback.yandex.ru/?from=captcha">................&nbsp;..........</a>
          </div>
        </td>

        <td class=
        "b-foot__layout__column b-foot__layout__column_right">
          <div class="b-copyright">
            ..&nbsp;1997...2011 ..<a class="b-copyright__link" href=
            "http://www.yandex.ru">............</a>..
          </div>
        </td>

        <td class="b-foot__layout__gap"></td>
      </tr>
    </table>
  </div>
</body>
</html>

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[majatu]

up up up up

[majatu]

up up up up

[majatu]

up up up up

[wysota]

Did you check the difference between what a regular browser sends and what your application sends? Did you check the difference between what a regular browser receives from the server and what your application receives?