private int DecodeContByteData(ArraySegment <byte> buf)
{
var offset = buf.Offset;
var count = buf.Count;
// Check how many bytes are available and how much we need
var available = count;
var need = this._octetLength - this._bufferOffset;
var toCopy = available >= need ? need : available;
if (toCopy > 0)
{
// Return is wrong because it doesn't handle 0byte strings
// Copy that amount of data into our target buffer
Array.Copy(buf.Array, offset, this._stringBuffer, this._bufferOffset, toCopy);
this._bufferOffset += toCopy;
// Adjust the offset of the input and output buffer
offset += toCopy;
count -= toCopy;
}
if (this._bufferOffset == this._octetLength)
{
// Copied everything
var view = new ArraySegment <byte>(
this._stringBuffer, 0, this._octetLength
);
if (this._huffman)
{
// We need to perform huffman decoding
this.Result = Huffman.Decode(view, _bufferPool);
}
else
{
// TODO: Check if encoding is really correct
this.Result =
Encoding.ASCII.GetString(view.Array, view.Offset, view.Count);
}
// TODO: Optionally check here for valid HTTP/2 header names
this.Done = true;
// The string length for the table is used without huffman encoding
// TODO: This might by a different result than Encoding.ASCII.GetByteCount
// Might be required to streamline that
this.StringLength = this.Result.Length;
this._state = State.StartDecode;
_bufferPool.Return(this._stringBuffer);
this._stringBuffer = null;
}
// Else we need more input data
return(offset - buf.Offset);
}
