type t = {mutable protocol_version : Dtcprotocol_piqi.protobuf_int32 option;mutable result : Dtcprotocol_piqi.logon_status_enum option;mutable result_text : string option;mutable reconnect_address : string option;mutable integer_1 : Dtcprotocol_piqi.protobuf_int32 option;mutable server_name : string option;mutable market_depth_updates_best_bid_and_ask : bool option;mutable trading_is_supported : bool option;mutable ocoorders_supported : bool option;mutable order_cancel_replace_supported : bool option;mutable symbol_exchange_delimiter : string option;mutable security_definitions_supported : bool option;mutable historical_price_data_supported : bool option;mutable resubscribe_when_market_data_feed_available : bool option;mutable market_depth_is_supported : bool option;mutable one_historical_price_data_request_per_connection : bool option;mutable bracket_orders_supported : bool option;mutable use_integer_price_order_messages : bool option;mutable uses_multiple_positions_per_symbol_and_trade_account : bool option;mutable market_data_supported : bool option;}