[Webkit-unassigned] [Bug 63696] New: Custom Accept-Encoding header prevents autoDecompress

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=63696

           Summary: Custom Accept-Encoding header prevents autoDecompress
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://developer.qt.nokia.com/forums/viewthread/2357/
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P3
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ttf11 at hotmail.com


When you set a custom "Accept-Encoding" raw header on a QNetworkRequest object (for example via an overridden QNetworkAccessManager::createRequest() ), QtWebKit will never decompress the reply anymore:

source code of qhttpnetworkconnection.cpp :

====================
    value = request.headerField("accept-encoding");
    if (value.isEmpty()) {
#ifndef QT_NO_COMPRESS
        request.setHeaderField("Accept-Encoding", "gzip");
        request.d->autoDecompress = true;
#else
        // if zlib is not available set this to false always
        request.d->autoDecompress = false;
#endif
    }
====================

If the "accept-encoding" header was already set, request.d->autoDecompress is never set to true. This is even true if you manually set the header to "gzip" for example.

The solution consists of two parts:
1) If the current value contains "gzip", also set autoDecompress to true
2) add a custom method to manually set autoDecompress to true (useful if you do not want gzipped data, but if the server still sends it, then decode it anyway as a fallback method)

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