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PS: in addition, if that HTTP head returned by the Web site contain a P3P header, the browser will be allowed to send third-party cookies.　毕业两年的白领吴宇超为了追求已经离婚的大学时期女神吕晓嫣， 搬到了天通苑的一间合租屋，认识了一群各有故事的年轻人。Today, taking advantage of Lao Ren's hardware to repeat the plot, I finally got what I wanted! ! Pay for feelings! ! !1945年4月中旬，吴家村的平静忽然被打破了。村里开始不断出现诡异之事：村民吴振堂家蒸好的一桶米饭莫名其妙地不见了；村民竹竿家的衣服和长老吴茂吉家的腊肉也不翼而飞；更有村民铜罐子家的狗被人杀死在村路上；接着，吴振堂在河里发现了外出村民的尸体……这一系列怪事让淳朴的村民感到疑惑和恐惧。2Z24Facing TCP's three-way handshake protocol, how should attackers launch attacks? The attacker first intentionally initiated a handshake packet. After receiving it, the server puts it into the waiting queue and returns an acknowledgement. Secondly, the attacker will no longer send the third acknowledgement packet, thus the server will make multiple retransmissions (the Linux system configures the number of retransmissions through tcp_synack_retries), consuming a lot of extra overhead, and the waiting queue will be occupied, even the waiting queue will be full, eventually causing the server to be unable to receive the client's request. This is the attack.