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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).等人都走后，周三太爷盯着板栗问：若真有女子拿了小公爷丢失的木雕来，小公爷当真娶她？板栗急忙摇头道：这事不会发生了。Stephen thought he was not going to overindulge in sex, but what he had just seen really surprised him and was somewhat tempted. But he would not take that step because he didn't want to add another injury to Stark.年轻貌美的尹芳若受委托去照顾 一个身患绝症的画家史轶南，让其恢 复治疗的信心，史轶南是一位“高素 质、高学历、高收入”的成功男士，两 人在朝夕相处中渐渐相爱了，然而史 轶南的母亲是位相当势利的女人，她 内心觉得芳若配不上自己的儿子，就 用尽了各种手段想要把芳若赶离史轶 南的身边，芳若在史母的强大攻势下 几乎要招架不住，而这时偏偏尹芳若 的前任男友也出现了，他为了让尹芳 若再次回到自己的身边，同史母合 作，势要拆散这一对恋人。--Update on December 3, 2018无缺公子，你应该喊铁心兰为铁姐姐。那些东西都好值钱的，卖了能买许多肉干和好吃的。