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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).Public void action () {There is no requirement for the minimum size of the veneer for the time being, but when either side of the veneer size is less than 80mm, it is required to adopt the form of splicing. For detailed requirements of splicing, please refer to the splicing specification.赵思萍抓着杨寿全的袖子进一步哭闹起来。H1deal!张禧嫔本名张玉菁，在家族没落后，和其他宫女一起入宫，经过努力表现，取得了肃宗的青睐。她为肃宗生下一子后，被封为禧嫔。她不断的陷害仁显皇后，导致仁显皇后被废除，自己终於登上了盼望已久的皇后宝座。张氏独占肃宗的爱，追求地位提升已达到病态的程度，但在张氏登位五年后终於失去肃宗对她的爱，被贬为禧嫔，仁显皇后复位。Ctrl + G: grid display mode control (F7)