大牛们好：

这是我使用Main Engine下单的代码：

from vnpy.trader.constant import (
    Exchange,
    Direction,
    Offset, 
    OrderType
)
from vnpy.trader.object import (
    SubscribeRequest,
    OrderRequest
)
from vnpy.event import EventEngine
from vnpy_ctp import CtpGateway

event_engine = EventEngine()
main_engine = VNPYTradeAppEngine(event_engine)
main_engine.add_gateway(VNPYTradeAppBase, "CTP_1", {'input_bar_interval': '5min'})

main_engine.connect(ctp_setting, "CTP_1")
time.sleep(10)

main_engine.subscribe(SubscribeRequest(symbol="rb2310", exchange=Exchange.SHFE), "CTP_1")
main_engine.send_order(OrderRequest(symbol="rb2310", exchange=Exchange.SHFE, 
                                    direction=Direction.LONG, 
                                    type=OrderType.LIMIT, price=3500, volume=1), "CTP_1")

其中VNPYTradeAppEngine（继承CtpGateway）和VNPYTradeAppBase（继承MainEngine）是继承自vnpy的两个类，里面和send_order相关的方法我都没有改动。目前运行后没有报错但账号也没有收到订单，虽然已经和券商做过穿透认证了。

于是我修改了send_order打印下单和main_engine相关信息检查：

    def send_order(self, req):
        order_result = CtpGateway.send_order(self, req)
        print(self.main_engine.__dict__)
        print("order_result:", order_result)

运行后的输出如下：

{'gateway': <VNPYTradeAppBase.VNPYTradeAppBase object at 0x7f2a77725190>, 'gateway_name': 'CTP_1', 'reqid': 8, 'order_ref': 0, 'connect_status': True, 'login_status': True, 'auth_status': True, 'login_failed': False, 'auth_failed': False, 'contract_inited': False,...}
order_result:

order result没有任何返回，而main_engine的login_status和auth_status都是True，似乎没有什么问题？

想问一下大家知不知道这个情况问题可能在哪里？

可以自己去接口的send_order函数里进行打印排查