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? Output: this is mailsender!Industry experts said that 5G mobile phones will enter large-scale sales, possibly by 2020. However, 4G smart phones are still the main sales force in the mobile phone market this year.After the fracture is cured, the function is normal and qualified. After joint injury or dislocation is cured, there is no recurrence and the function is normal and qualified.明明男尊女卑，为何说男女一样重要？黄豆道：男尊女卑是不错，男女咋就不一样重要了？田遥大声道：怎能一样？男人尊贵，女人卑贱。上个世纪80年代末的一天，李 家福、魏大林等一群乡村男孩放学 后玩耍，魏大林把书包放在路边， 被家福表哥家庆闹着玩章走了，家 福在同学眼里成了偷书包的人。在 此重压下，家福与表哥还书包不 成，就把书包丢进河里。女孩丰秀 自称捡到了书包还有那五元钱，老 师表扬她拾金不昧并让她当上了班 长，后来...郑俊浩与申恩庆合演一对夫妻，另一对则是由廉晶雅与金佑锡镐合演。郑俊浩是继电影《爱你不后悔》、《两个女人》后再与申恩庆合作，也曾和金佑锡于《爱的谎言》中共同演出。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).