public bool EncodeHeader(Span <byte> buffer, int staticTableIndex, HeaderEncodingHint encodingHint, string name, string value,
Encoding?valueEncoding, out int bytesWritten)
{
Debug.Assert(!_pendingTableSizeUpdate, "Dynamic table size update should be encoded before headers.");
// Never index sensitive value.
if (encodingHint == HeaderEncodingHint.NeverIndex)
{
int index = ResolveDynamicTableIndex(staticTableIndex, name);
return(index == -1
? HPackEncoder.EncodeLiteralHeaderFieldNeverIndexingNewName(name, value, valueEncoding, buffer, out bytesWritten)
: HPackEncoder.EncodeLiteralHeaderFieldNeverIndexing(index, value, valueEncoding, buffer, out bytesWritten));
}
// No dynamic table. Only use the static table.
if (!_allowDynamicCompression || _maxHeaderTableSize == 0 || encodingHint == HeaderEncodingHint.IgnoreIndex)
{
return(staticTableIndex == -1
? HPackEncoder.EncodeLiteralHeaderFieldWithoutIndexingNewName(name, value, valueEncoding, buffer, out bytesWritten)
: HPackEncoder.EncodeLiteralHeaderFieldWithoutIndexing(staticTableIndex, value, valueEncoding, buffer, out bytesWritten));
}
// Header is greater than the maximum table size.
// Don't attempt to add dynamic header as all existing dynamic headers will be removed.
var headerLength = HeaderField.GetLength(name.Length, valueEncoding?.GetByteCount(value) ?? value.Length);
if (headerLength > _maxHeaderTableSize)
{
int index = ResolveDynamicTableIndex(staticTableIndex, name);
return(index == -1
? HPackEncoder.EncodeLiteralHeaderFieldWithoutIndexingNewName(name, value, valueEncoding, buffer, out bytesWritten)
: HPackEncoder.EncodeLiteralHeaderFieldWithoutIndexing(index, value, valueEncoding, buffer, out bytesWritten));
}
return(EncodeDynamicHeader(buffer, staticTableIndex, name, value, headerLength, valueEncoding, out bytesWritten));
}
