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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).紫茄黑眼睛一闪。喜姑姑急忙点头，又赔笑说了一阵子，方才出去了。Time (S)纵观上下五千年，每个中国家庭都是有幸遇上今天这个真正的盛世，经济繁荣，社会宽容，然而我们却并没有感到幸福，由于传统人生观、价值观被颠覆，带来了人文伦理上的诸多错位，在物质丰富的今天，维糸家庭亲情的这根纽带，有时却像一条疲惫的凉衣绳，在凄雨中孤独地摇曳。 本剧通过李家老俩口二男四女这一大家这些年来的生活路程，反映这个时态下，一个中国家庭转型期的生存状态，和每个人的成长过程。　　可是，林白萍还是放不下他的妻子，如烟也觉得他们毕竟是夫妻。于是当他回家看望妻子时，她怀着他的孩子当了尼姑。谁料白萍不愿拆散边仲膺和林芷华，而又爱上了芷华的朋友张疏敏。"The practical activities are over. I'd like to share my harvest with you and thank the general managers for their help. You should lead everyone with your speech. We should make college students a position to cultivate talents with good moral character and high intelligence quotient!" On the day the activity ended, Teacher Sun sent a message to the captain. Mr. Sun Yimin always faces every student activity with the greatest enthusiasm. He can always think of problems that the team members have not considered. Not only that, the teacher also participated in the interaction with us and asked questions about college students' entrepreneurship and employment when facing the leaders of the enterprise to make this practice more exciting and full.