I subclass QNetworkAccessManager (This class was introduced in Qt 4.4.) to load remote xml html or image to compose documents.

the code is avaiable on:

http://fop-miniscribus.googlecode.co...rk/FillCache.h
http://fop-miniscribus.googlecode.co.../FillCache.cpp

I start request on this way:

Qt Code: 
  1. void NetCacheSwap::start_Get( const QUrl url )
  2. {
  3.     CacheInfo havingram = take_Url(url);
  4.     if (havingram.pending) {
  5.     /* request ist start */
  6.     return;
  7.     }
  8.     if (havingram.valid) {
  9.     /* request and data live on swap cache */
  10.     emit incomming(url); 
  11.     return;
  12.     }
  13.     CacheInfo newrequest;
  14.     QNetworkRequest need(url);
  15.     need.setRawHeader( "User-Agent", "Mozilla/5.0 (X11; U; Linux i686 (x86_64); "
  16.                        "en-US; rv:1.9.0.1) Gecko/2008070206 Firefox/3.0.1" );
  17.     need.setRawHeader( "Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7" );
  18.     need.setRawHeader( "Accept-Encoding", "gzip,deflate,qcompress" ); ////////gzip,deflate,qcompress
  19.     need.setRawHeader( "Connection", "keep-alive" );
  20.     if (cookie_host[url.host()].size() > 0) {
  21.      qDebug() << "### > send cookie ->" << cookie_host[url.host()].toAscii();
  22.      need.setRawHeader( "Cookie",cookie_host[url.host()].toAscii()); 
  23.     }
  24.     QNetworkReply *reps = get(need);
  25.     /* mark it as pending request! */
  26.     newrequest.pending = true;
  27.     cache_ram.insert(fastmd5(url.toString()),newrequest);
  28.     connect(reps, SIGNAL(downloadProgress (qint64,qint64)),
  29.                      SLOT(progress(qint64,qint64)));
  30.     connect(reps, SIGNAL(error(QNetworkReply::NetworkError)),
  31.                     SLOT(url_error(QNetworkReply::NetworkError)));
  32.     connect(reps, SIGNAL(finished()),SLOT(incomming_cache()));
  33. }
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if incomming chunk is and header is content-encoding == gzip i open on this way:

i decompress on file .....
Qt Code: 
  1. QByteArray NetCacheSwap::deflate( const  QByteArray chunk )
  2. {
  3.     QChar letter('A' + (qrand() % 26));
  4.     /* must not go on file solution gunzip buffer ?  go cache from net location */
  5.     const QString tmpfiler = QString("%1/http_%2.gz").arg(location).arg(letter);
  6.              QByteArray input;
  7.              QFile file(tmpfiler);
  8.              if ( file.open(QIODevice::WriteOnly) ) {
  9.                  file.write(chunk);
  10.                  file.close();
  11.                  gzFile filegunzip;
  12.                  filegunzip = gzopen(tmpfiler.toUtf8().data(),"rb");
  13.                  if(!filegunzip) {
  14.                  qDebug() << "### Unable to work on tmp file ... ";
  15.                   return QByteArray();
  16.                  }
  17.                   char buffer[1024];
  18.                   while(int readBytes =gzread(filegunzip, buffer, 1024))
  19.                    {
  20.                     input.append(QByteArray(buffer, readBytes));
  21.                   }
  22.                  gzclose(filegunzip);
  23.                  file.remove();
  24.              }
  25. return input;          
  26. }
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How i can deflate / decompress QByteArray data direct on buffer? is this possibel?


i search "content-encoding" on network qt lib i found only

bool QHttpNetworkReplyPrivate::isGzipped()
{
QByteArray encoding = headerField("content-encoding");
return encoding.toLower() == "gzip";
}

and isGzipped search is NULL on other or webkit .. ?