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放下手机，陈启看向电脑。Big Brother drinks. Having said so much, I'm sure my mouth is dry.TCP is connection-oriented, and a connection must be established between either side before sending data to the other. In TCP/IP protocol, TCP protocol provides reliable connection service, and the connection is initialized by three-way handshake. The purpose of the three-way handshake is to synchronize the serial numbers and acknowledgement numbers of both parties and exchange TCP window size information. The process of shaking hands can be represented by the following figureFor the advantages we mentioned, the second point is that we can understand the virtual agent below. The virtual agent is used to control access to the ontology with high creation cost. It will postpone the instantiation of the ontology until a method is called. For example, if the instantiation of an object is very slow now, it cannot be completed immediately when the web page is loaded. We can create a virtual agent for it and let it postpone the instance of the object until it is needed.Note: Since View does not have a child view, onInterceptTouchEvent is not required to control whether the event is passed to the child view or intercepted. Therefore, when the event distribution of View calls super.dispatchTouchEvent (), the event is passed to its own onTouchEvent by default (equivalent to intercepting). Compared with the dispatchTouchEvent event distribution of ViewGroup, the event distribution of View does not have the third point of the four targets mentioned above.Chen Yongfan, male, 29 years old, from Shanwei, lives in Shenzhen