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Another end-host-based solution is to shorten the time between a TCB entering the SYN-RECEIVED state and being recycled because it does not enter the next state. However, an obvious disadvantage of this scheme is that the attack can take advantage of ACK-SYN lost packets due to congestion or ACK packets completed by handshake, so that legally connected TCB will be recycled because the host is busy retransmitting these packets (because SYN-RECEIVED time is reduced). In addition, there is only a linear relationship between how much time the administrator reduces the SYN-RECEIVED state and the attacker's contract awarding rate. For the above reasons, this scheme is not recommended.秦军兵力强大，锐不可当，赵王歇力战不敌，退居当时的国都巨鹿，依托高墙深池坚守。可是，这回老龟却不理人了，还颠了颠身子，想把小苞谷颠下来。[3 sets of special training programs for the simplest strength lifting]这一刻，请别犹豫，勇敢爱吧！Supplement: Use the "shadow instance" method to update the attributes of singleton objects synchronously.