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Since the public's awareness of environmental protection awakened, the word garbage classification has gradually entered our life. In the past ten years or so, what has been the progress of garbage classification and has it kept pace with the times? There is a long way to go to sort out garbage, but it is also searching up and down. Waste collectors who graduated from the Chinese Academy of Sciences have done something big. They have to sweep the code for garbage collection. Is this reliable? This week, we sneaked into the streets and listened to what everyone said.In TCP implementation, when receiving the SYN request from the client, the server needs to reply the SYN + ACK packet to the client, and the client also needs to send the confirmation packet to the server. Usually, the initial serial number of the server is calculated by the server according to certain rules or adopts random numbers. However, in SYN cookies, the initial serial number of the server is obtained by hash operation and encryption of the client IP address, client port, server IP address, server port and other security values, which is called cookie. When the server suffers from SYN attack and makes the backlog queue full, the server does not reject the new SYN request, but replies the cookie (SYN serial number of the reply packet) to the client. If it receives the ACK packet from the client, the server subtracts 1 from the ACK serial number of the client to obtain the cookie comparison value, and performs a hash operation on the above elements to see if it is equal to the cookie. If equal, complete the three-way handshake directly (Note: At this time, you don't need to check whether this connection belongs to the backlog queue).在《勇敢的心》的上部结局中，剧情原本是设定为霍啸林带领的抗日战士们被日军围困在一个山谷之中以几十架飞机轮番轰炸、扫射，全部战士们都英勇就义了，而当人们焦急寻得霍啸林时，他也已被日军砍下了头颅。但是，郭靖宇导演说，因为《勇敢的心》收视率高，所以将结局改了，霍啸林不会死，梅九哥也不会死！那么，《勇敢的心2》中的霍啸林将以什么样的方式复活呢？他的出现，又将掀起怎样的一番风浪呢？梅九哥的到来，又会否成为《勇敢的心2》中的另一个高潮呢？Yeah. . Support. Yeah. . Support. Yeah. . Support奶奶也没来，兄弟姊妹也没来，只来了大姐，看他的目光跟看街上陌生人没两样，他还有什么指望？要面子，儿子还抵不过王府的脸面？主要是不相信他吧。他低下头沉思了一会，才笑着对郑氏道：姑姑说的是。东京飞马书房吉祥寺分店，担任副店长的西岗理子（稻森泉 饰）拥有卓越的指挥能力。多年来店员们对她无比依赖，大小事务全由理子裁决定夺。不知不觉间，店员们已经习惯了这种按部就班无需彰显个性的工作，直到某一天一位新店员的到来，令吉祥寺分店的气氛为之一变。来者名叫北村亚纪（渡边麻友 饰），是一个饮食无忧不折不扣的富二代。她对书籍有着难以比拟的热爱，加上大小姐的身份和性格，所以不由分说将许多自己的想法带入到工作中来，也由此和理子发生着碰撞。经过一系列事件，她们似乎能够了解彼此的真意，不过书店女孩的生活和战斗才刚刚开始……