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2. Product Class: Pizza as defined above is also an abstract class, and specific products are implemented by its subclasses.The sockstreet attack first completes the tcp three-way handshake the tcp connection is established, but in the last ack reply of the three-way handshake, the attacker sets its tcp window to 0 and then makes a data request. When the target discovers that the TCP window size at the receiving end is 0 when transmitting data, it will stop transmitting data and issue a TCP window probe packet to ask the attacker if its TCP window has been updated. Since the attacker does not change the size of the tcp window, the target will always maintain the tcp connection waiting for data to be sent and continuously carry out window update detection. If the attacker uses a large number of controlled hosts to carry out sockstreet attacks, the target will always maintain a large number of tcp connections and carry out a large number of window update detection, and its tcp connection table will gradually run out.“大话王”赵德兴（郭晋安饰）因一次意外令生意搭档蒙一言（谭俊彦饰）头部受伤并失忆，赵德兴要在24小时里帮助蒙一言找回记忆，以此为主线串联起种种社会荒诞现象和人物。不瞒大家说，在下得神女指点已经不是第一次了。Zhao Mucheng did not know why Liu Guiduo only called Cui Yong and did not call him.在西域有一群身怀绝技的人，他们从事着古老而神秘的职业，用骆驼护送货物辗转各地，被称为骆驼客。戈师傅（刘小宁饰）拥有过人的弓箭技巧，是当地最负盛名的驼队首领，这次，他的驼队刚刚踏上古老驼道，就遭遇到一场惊心动魄的疯狂追杀。心怀鬼胎的队友，女儿（陈旭竹饰）与徒弟（张玉龙饰）之间的意乱情迷，危机重重之际，他们走上的很可能是一条不归路。忠诚与背叛，他们能否坚守侠客的信义？在箭与枪的交锋中，谁成为最后的赢家？条件不可谓不苛刻，但是臧荼也不敢说什么，人家韩信有强势的资格。