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Public class MySubject extensions AbstractSubject {Since http is based on tcp, You need to complete a three-way handshake to establish a tcp connection before you can start http communication, Therefore, when http flood attacks are carried out, it is not possible to use forged source ip addresses to launch attacks. An attacker will typically use an http proxy server, Not only can the source be hidden from being traced, It also improves attack efficiency-after the attacker connects to the proxy server and sends the request, You can directly disconnect from the proxy server and start connecting to the next proxy server, At this time, the http connection between the proxy server and the target web server is still maintained, and the web server needs to continue to accept and process data. An efficient http flood attack should continuously send http requests for different resources and pages, and request resources that cannot be cached as much as possible (such as keyword search. User-related information, etc.)Deliberate practice does not deny the importance of situation, but in some best sellers, the mainstream methods that have been confirmed by learning science are placed in a humble corner. Tacit knowledge, which is closely related to learning, is ignored. A large number of studies in learning science show that the best way for adults to learn is not to practice alone, but to learn in situations. Effective learning is to enter relevant situations and find one's own "learning community". At the beginning, learners turn around important members and do some peripheral work. With the growth of skills, they enter the core of the learning community circle, gradually do more important work and eventually become experts.影片讲述了一对形同姐妹又骨肉情深的别样母女，不按套路出牌的单身辣妈秦美丽（闫妮饰）与正处于叛逆期的女儿赵小艺（邹元清饰）之间相“碍”相亲、陪伴成长，一系列欢脱又不失温情的故事笑中带泪，感动人心。第五季的故事中，编剧将会有一个重大的时间跳跃；Anna饰演的“Joanie”是Alison和Cole的女儿，将会以成年人的身份登场，重新回到Montauk寻求关于母亲的真相。目前《婚外情事》确定新一季除了Ruth Wilson饰演的“Alison”不再出现之外，剧中的另外一位男主“Cole”Joshua Jackson也已经降级到客串演员，仅会出现1-2集。(1). IE browser supports this event.ALT + TK such as quick selection