public Stream OpenStream(Action <Utf8String, Utf8String> onHttpHeader)
{
var gz = OpenRaw();
var reader = new Utf8StreamReader(gz);
var warcHeader = reader.ReadTo((Utf8String)"\r\n\r\n");
var warcContentLength = ReadWarcRecordContentLength(warcHeader);
var response = OpenHttp(reader, null, new Uri(this.Url), warcContentLength, out var payloadLength, out var redirectLocation, out var responseCode, out var contentType, out var lastModified, onHttpHeader);
if (payloadLength != -1)
{
PayloadLength = payloadLength;
}
return(response);
}