QHttp2Configuration: remove setters/getter for indexing

Upon reading the Apple's documentation it would appear the indexing
is more complicated (they name the specific fields and which kind
of indexing must be applied to each). This requires a finer level
of configuration/control and probably a separate class (aka
QHpackConfiguration? ;). We'll provide it in future, if requested
by our users.

Fixes: QTBUG-77412
Change-Id: I6e9461b3966ed59c8b70873eab999a07a04eb289
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

src/network/access/qhttp2configuration.cpp

@@ -79,13 +79,9 @@ QT_BEGIN_NAMESPACE
          frame.
     \endlist
 
-    The QHttp2Configuration class also controls some of the parameters
+    The QHttp2Configuration class also controls if the header compression
-    affecting the header compression algorithm (HPACK). They include:
+    algorithm (HPACK) is additionally using Huffman coding for string
-
+    compression.
-    \list
-      \li Huffman string compression.
-      \li Indexing strings.
-    \endlist
 
     \note The configuration must be set before the first request
     was sent to a given host (and thus an HTTP/2 session established).
@@ -112,7 +108,6 @@ public:
     bool pushEnabled = false;
     // TODO: for now those two below are noop.
     bool huffmanCompressionEnabled = true;
-    bool indexingEnabled = true;
 };
 
 /*!
@@ -122,7 +117,6 @@ public:
     \list
         \li Server push is disabled
         \li Huffman string compression is enabled
-        \li String indexing is enabled
         \li Window size for connection-level flow control is 65535 octets
         \li Window size for stream-level flow control is 65535 octets
         \li Frame size is 16384 octets
@@ -211,30 +205,6 @@ bool QHttp2Configuration::huffmanCompressionEnabled() const
     return d->huffmanCompressionEnabled;
 }
 
-/*!
-    If \a enable is \c true, HPACK compression will index strings
-    in its dynamic compression table. Enabled by default.
-
-    \note This setting only has an affect on how QNetworkAccessManager
-    sending 'HEADERS' frames.
-
-    \sa stringIndexingEnabled
-*/
-void QHttp2Configuration::setStringIndexingEnabled(bool enable)
-{
-    d->indexingEnabled = enable;
-}
-
-/*!
-    Returns \true if HPACK compression is indexing strings.
-
-    \sa setStringIndexingEnabled
-*/
-bool QHttp2Configuration::stringIndexingEnabled() const
-{
-    return d->indexingEnabled;
-}
-
 /*!
     Sets the window size for connection-level flow control.
     \a size cannot be 0 and must not exceed 2147483647 octets.
@@ -335,7 +305,6 @@ bool operator==(const QHttp2Configuration &lhs, const QHttp2Configuration &rhs)
 
     return lhs.d->pushEnabled == rhs.d->pushEnabled
            && lhs.d->huffmanCompressionEnabled == rhs.d->huffmanCompressionEnabled
-           && lhs.d->indexingEnabled == rhs.d->indexingEnabled
            && lhs.d->sessionWindowSize == rhs.d->sessionWindowSize
            && lhs.d->streamWindowSize == rhs.d->streamWindowSize;
 }

src/network/access/qhttp2configuration.h

@@ -66,9 +66,6 @@ public:
     void setHuffmanCompressionEnabled(bool enable);
     bool huffmanCompressionEnabled() const;
 
-    void setStringIndexingEnabled(bool enable);
-    bool stringIndexingEnabled() const;
-
     bool setSessionReceiveWindowSize(unsigned size);
     unsigned sessionReceiveWindowSize() const;