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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).别说傻话。我练习用针，可是练了好几个月，拿针才稳当的。桓楚曾是流亡楚国大泽间的盗匪，颇有威名，项梁起兵江东时，当时的会稽太守殷通曾说要项梁和桓楚统兵作战。改编自阿川佐和子同名小说。东京下町豆腐店的长女竹村凜々子，从小就拥有超强正义感，现在是横滨检查厅工作的第二年。与恋人面临结婚与工作的选择，父亲陷入不伦丑闻，被起诉的嫌疑人有被冤枉的可能……凜々子在一个个疑难案件中摸索着自己的正义，新人女检察官哭与笑、决断与奋斗的成长故事。宁静郡主郁闷了，原来自己自作多情呢。Rhona Mitra将继续在本季扮演Rachel Dalton少校，Michelle Lukes扮演Julia Richmond中士，Liam Garrigan扮演Liam Baxter中士。