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晚清末年，名将彭泽南长期与外夷交战，忽略了妻子令她心存怨艾。同时长子之文在战乱中走失，幼子之贤送抵边寨首领当人质，彭夫人痛不欲生，一怒之下带次子回北京。16年后，彭家三兄弟长大成人。流落上海的之文身处帮会却为人敦厚；次子之武从小生长于畸形环境导致行为乖张；之贤勇敢刚毅热血心肠。二十世纪七十年代末，在老北京一个小胡同里，少年冯都在小伙伴肖战的家里，第一次看到了电视机，屏幕中的影像深深震撼的冯都的心灵，从此，他一生与电视结缘。高中时，他为向女友证明自己，用废旧零件组装了一台电视。改革开放初期，他抓住机遇做电视生意，挖到第一桶金。电视普及后，冯都成立影视公司，成为优秀的制作人。在市场经济大潮的冲击下，冯都的事业不断发展，但同时，他在追求人生价值的道路上也一次次陷入迷惘，付出了沉重的代价。人到中年，冯都终于找回做电视事业的初衷，把自己对时代对人生的思考，融入到一部真诚的纪录片中。State mode is one of the implementations of state machines, but in a "classless" language like javascript, there is no stipulation that state objects must be created from classes. On the other hand, Java Script can use delegate technology very conveniently without having one object hold another in advance. The following state machine chooses to delegate the request directly to a literal object through the Function.prototype.call methodThe premise of HTTP interception in the previous section is that the request must have characteristics. However, a real DDOS attack has no characteristics. Its request looks the same as a normal request and comes from different IP addresses, so it cannot be intercepted. This is why DDOS is especially difficult to prevent.Let's start the tutorial: