anchor.diff:              ok
       end.
   
  -to_binary(X) when is_list(X)   -> list_to_binary(X); 
  +to_binary(X) when is_list(X)   -> list_to_binary(X);
   to_binary(X) when is_binary(X) -> X.
  
positive.code: %% not support Trailers in the Chunked Transfer encoding. Any trailer
  %% received is silently discarded.
  parse_11_response(DataRecvd,
                    #state{transfer_encoding = chunked, chunk_size = 0, 
                           cur_req           = CurReq,
                           deleted_crlf      = DelCrlf,
                           chunk_size_buffer = Trailer,
  
negative.code:             {error, max_headers_size_exceeded}
      end.
  
  upgrade_to_ssl(#state{socket = Socket,
                        connect_timeout = Conn_timeout,
                        ssl_options = Ssl_options,
                        tunnel_setup_queue = Q} = State) ->
  