学习Onvif的最关键步骤就是设备发现，一般来说开发的设备都是客户端，只要能被服务端正确发现就大功告成啦！ 本文分别实现了客户端和服务端的识别流程，可以配合起来运行测试-he most critical step is discovery learning Onvif general development of the equipment are the client, as long as the server can be found in the right and you r