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无事的兵卒便倒进营帐之中，难得清闲。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).1离海5分钟，从最近的车站开车约50分钟，想以徒步离开几乎不可能！如此超偏僻的地方，有一所完全住宿制的名门男校——私立栖凤高中。就读于这所全寄宿制高中的学生全都是渴望女孩与恋爱的男生......"Extension" Free of ChargeLet's say three people are A B C《奈何boss要娶我2》讲述了为了演员梦想而努力的女艺人夏林（王双 饰），在一次晚宴中意外与港东首富凌异洲（徐开骋 饰）发生“夏林勾引凌异洲”绯闻，为了保住自己热爱的事业，夏林想要联合凌异洲一同澄清，凌异洲告诉夏林，让负面舆论停止的方法，就是把话题引导到正面角度，两人可以签订协议假装订婚，直到负面舆论停息。夏林考虑很久后同意，于是两人开启了扮演情侣的交往模式。在扮演情侣后二人互生好感，感情升温时却因外界的阴谋而出现波折，凌异洲与夏林共同面对，解除误会，最终互表心意，甜蜜大婚。