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If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. TCP is a reliable protocol, and messages will be retransmitted at this time. The default number of retries is 5. The interval time of retries is doubled from 1s to 1s + 2s + 4s + 8s + 16s = 31s respectively. After the fifth time is sent out, it will take 32s to know that the fifth time has timed out, so the total is 31 + 32=63s.门上贴着封条，**裸地嘲笑他的幻想和无知。Manaca, to put it bluntly, is a subway card. By charging money into the card, you only need to swipe your card when entering or leaving the subway, and you don't need to buy a ticket. In addition, the vending machine in the subway can also use Manaca credit card to pay, which is very convenient.陈桃花，是一个特别的女孩，也是春风镇无人不知无人不晓的风云人物，但她的特别，并不是来自於她本身，而是她那四个不论在外表出众的四个哥哥，他们四个每一个皆是女孩心目中的完美情人，但真正让他们声名大噪的，并不只是他们过人的优质魅力，而是他们对妹妹的过度疼爱……电影《小丑》以同名DC漫画角色为基础，由华纳兄弟影业公司发行，计划于2019年10月4日上映。本片的故事将独立于DCEU之外，故事背景设置在20世纪80年代，讲述了一位生活陷入困境的脱口秀喜剧演员渐渐走向精神的崩溃，在哥谭市开始了疯狂的犯罪生涯，最终成为了蝙蝠侠的宿敌“小丑”的故事。Updated June 1The slow door can capture the cloud shape of the water flow.