def send_ack(self, frame, datas):
"""
Method: send_ack
Description:发送应答消息
Parameter:
frame: AppFrame实例，对应的请求消息
datas: 应答消息体，字符串或二进制数据，可以是一个字符串或二进制数据的列表
Return:
Others:
"""
frame_ack = AppFrame()
frame_ack.prepare_for_ack(frame)
if isinstance(datas, list) or isinstance(datas, tuple):
for data in datas:
frame_ack.add_data(data)
else:
frame_ack.add_data(datas)
self.dispatch_frame_to_process_by_pid(frame.get_sender_pid(), frame_ack)
