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Simple test classes: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.该片以“中国好人”孟昭良感人事迹为原型，讲述了一名勤劳善良的菏泽普通百姓孟昭良不惧怕各种艰难困苦，救助一对残疾母女的故事。六集诗选剧《零异频道：蜡烛湾 Channel Zero: Candle Cove》在10月11日首播，由Kris Straub所「着」的Creepypasta（转贴恐怖故事﹑都市传说）改篇，这剧讲述男主对一个80年代的神秘儿童节目十分偏执，因为他相信该节目引发了一连串的梦 魇及死亡事件。蜡烛湾是现实的都市传说，在当时一个美国论坛有人问一部诡异的儿童节目，名为《蜡烛湾 Candle Cove》，然后一群人指他们对这节目有记忆，而且还指发生了各种奇怪事件，但后来Kris Straub出来指这节目其实是他捏造的，然而不少人皆表示不相信，并质疑他是想隐瞒该节目的存在。故事以现代常见的重组家庭当主轴，描述饰演父亲的陈文山结婚三次，和历任妻子的小孩，同住在一个屋檐下的故事。(2) Graduates with bachelor's degree or above: They are required to have a good foundation in English listening and speaking and pass the National English Test Band 4 or Band 6 (with a score of 425 or above).他不会让她失望。