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).
If a server does not return a valid reply to the Sentinel process that sent the PING command to it within the time specified by the master-down-after-milliseconds option, the Sentinel process marks the server as subjective offline.
饱受家庭和社会催婚压力的都市女白领28岁女主高鑫，从小父母离异缺乏安全感，和前男友刚结束了一段不靠谱的感情之后，开始对婚姻和爱情产生了怀疑，决定集中精力在工作上，就在奋力争取一个公司的外派工作机会时发现公司要求自己要有稳定的家庭生活，百感交集时，正好在好朋友的咖啡厅偶然遇到了与众不同的追求二次元梦想的零恋爱经验26岁男主陆嵘二，他正在研究一款恋爱数据游戏需要搜集女生的恋爱经验，于是二人在在互惠互利的“合作”过程中渐渐发现真的爱上了对方，也因为对方而变成了更好的人、看到了更美好的世界，最后两人决定以不一定结婚为目的谈一场最纯粹的恋爱。
镇国公夫人深吸一口气，道：你们父子都是一样的人。
秦枫道：回来就回来，谁还不让你回来了？别推三阻四的，带上淼淼，也不增加你多少事，就不耐烦了？板栗张口结舌。
雷蒙德·巴隆是纽约一家体育报社的记者，他与妻子戴博拉、四岁的女儿艾利以及一对两岁的双胞胎——迈克和杰夫里，一起住在纽约长岛一栋宽敞漂亮的房子里。雷蒙德在工作上取得的优异成就和宽容风趣的性格让他成为家人的骄傲，以及所有人爱戴的对象；贤妻良母型的全职母亲戴博拉的精心经营更让这个年轻的五口之家成为美国三好家庭的文明典范。然而，家家的确都会有本难念的经……
隔壁的女孩之午夜幻想
Twenty-five years later, the living conditions of this group of people are very interesting:
如今君臣有别，必须小心对待。
‘别人不能，但是我能。
When we were young, chasing girls, the older ones told us the experience of being bold, careful and thick-skinned. In fact, doing business is like chasing girls.
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该剧讲述了邵雪、郑素年、张祁等几名故宫文物修复匠人的孩子，众人从小一同在北京的胡同里长大，经历非典疫情、长辈离世、古城拆迁等种种风云，结下了深厚情谊
二人都已没什么人样，但都笑了，既然会师了，就说明贼人已经杀光了。
《魔法少女奈叶第四季 ViVid》以奈叶收养的女孩薇薇欧为主人公。故事讲述了“JS事件”之后，曾经的空中王牌奈叶收起羽翼暂作休息，而刚进入魔法学校初等科的薇薇欧在掌握了魔法基本知识后，收到了奈叶和菲特赠送的专用法器“神圣之心”；而另一边，自称为“霸王”的神秘人物英格威特，正准备掀起一股新的波澜……
Whether you are a new salesman or an old salesman, In the process of sales promotion, we must treat each customer with a sincere attitude, take the initiative to think of the customer, take the customer's needs as the focus of work, and we must do a good job in the whole process of pre-sale, in-sale and after-sale service, so that the customer can recognize your work and make friends with you, so that you will gradually grow from a new salesman to a successful salesman.
改编自加藤ジャンプ与土山茂漫画作品。以コ字型吧台的小酒馆为舞台的独特美食恋爱剧，通过客人和老间的互动而道出各式各样的故事。广告代理店“Shuee project”的职员・吉冈とり（浅香航大），每天忙碌地往返于公司和家，过着黑白的日子，在意料不到的状况而再遇到憧憬已久的惠子学姐（中村友理），大学时代在学姐推荐下，悄悄打开酒馆的门，一开始虽然有些困惑，但随着黄汤下肚，被菜色所感动，和老板主、客人一起在逐渐融洽的氛围下，沉醉于コ字型魅力之中，那里是至今为止都不曾体会过的宽广的乐园。
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