Facing TCP's three-way handshake protocol, how should attackers launch attacks? The attacker first intentionally initiated a handshake packet. After receiving it, the server puts it into the waiting queue and returns an acknowledgement. Secondly, the attacker will no longer send the third acknowledgement packet, thus the server will make multiple retransmissions (the Linux system configures the number of retransmissions through tcp_synack_retries), consuming a lot of extra overhead, and the waiting queue will be occupied, even the waiting queue will be full, eventually causing the server to be unable to receive the client's request. This is the attack.
10
一旦女人从多愁善感……变得狡猾善变，不管男人有多坏，都仔细你的心吧。
本应平凡的校园，却传出了骇人听闻的事件！最亲近的同学，一个个化为嗜血的僵尸…我们，该何去何从？
The mother of the second daughter-in-law
调皮捣蛋的小僵尸乃僵尸家族的宠儿，某夜突然失去影子，家族成员四出寻觅。僵尸少爷途中遇一青年阿贵，阿贵明知他非人类，拟将他送回家。有一茅山道人，专门利用夜间偷刚死的尸体，练成僵尸为非作歹，无意间得知阿贵有一僵尸仔，乃千方百计欲夺取......
他实在累坏了，觉得把这些玩意掏出来，身上轻松一大截，于是，就不想再带着了。
剧情以清末古玩圈为背景，讲述了一个祖传水仙盆因其的家庭巨变。由吴樾饰演的车夫天和，原本是老老实实闯荡北京的“北漂”一族，憨厚朴实，与莲花李小冉“闪婚”后，两人在勤勤恳恳过日子的同时，也逐渐产生了感情。然而天不遂人愿，一场变故让莲花手中的水仙盆在古玩圈引起巨大轰动，在金钱和利用的诱惑下，天和好像变了一个人，不仅脱去土布棉衣棉裤，变身西装革履的纨绔少爷，内心也开始“蠢蠢欲动”。
Located at the southern foot of Qingyuan Mountain in the northwest of the city, it is an important part of the flood detention and drainage project in the northwest ocean. This area is located in a low-lying plain area. In the past, when large floods occurred, it mainly relied on natural water surface and rice fields to detain flood, commonly known as the "Northwest Ocean". Due to the serious flood disaster, the municipal party Committee and the municipal government attach great importance to it. The construction of the flood detention and drainage project in the northwest ocean was listed as the No.1 bill of the 5th session of the 12th municipal people's congress.
抗战爆发，日本人侵驻定州城。国难当头，天龙山“十三太保”票儿揭竿而起，率领众弟兄英勇抗日。凤鸣山女当家肖桂英胆大泼辣，跟日本人有着血海深仇，与票儿并肩作战。共产党人林业农和牛紫萱在票儿身边为其出谋划策，用红色的思想影响和熏陶着票儿，引领着票儿走正道！在天龙山失守后，票儿终于率领众弟兄跟着牛紫萱投奔了共产党领导的军队。林业农和牛紫萱在抗战中牺牲，他们的死对票儿的内心产生了巨大的冲击，革命的理想和信念从此在他的心里深深扎根。抗战胜利后，汉奸聂双会等沦为国民党的穷寇恶匪，这些人在定州暗地展开破坏活动，威胁着新生政权。此时的票儿已经成为解放区的公安局副局长，他劝降了肖桂英，这对冤家一样的恋人终于在思想上真正的走到了一起。票儿在肖桂英的协同下一起抓敌特，斗顽匪，最后为新中国的建立献出了自己的宝贵生命。
One Observer interface:
司马欣道：正因如此，楚军的意图更不好把握，尹旭此人不最擅长的便是声东击西，攻其不备。
田行建从西北只身来到上海投奔中学同学大明，然而他却发现大明并不如他自己所说的那样拿着几千块工资的高级白领，相反是一个欠了房东几千块的房租准备跑路的家伙。田行建将自己带来的钱替大明还了房租，却发现除了房租，大明还欠了女朋友的好朋友小芹的5万块钱，元元带着小芹找上门来，大明逃之夭夭，却留下了小芹和田行建同处一室，小芹生怕田行建也跑了天天守在田行建身边，在这段尴尬的相处期里，小芹发现田行建的身上有着一股倔强执着的东西，令小芹十分的赞赏。最终失踪了几天的大明还是忍不住回了家，钱还不出来，只有靠以后工作慢慢的分期付款，小芹拿大明也没有办法，只得搬离了那间陋室。田行建发现以自己的条件在上海几乎找不到一份象样的工作，最终与大明两人不得不去上门推销女式内衣来维持生计，就在这过程中，田行建遇见了一倩，惊为天人，发誓要将一倩追到手。为此他前去一倩的公司应聘。田行建的学历和经历让广告公司的创意总监觉得他自不量力，而他口出狂言表示，自己连女式内衣都能推销，这世界上就没有自己卖不出去的东西。这话立刻引起了老板鲁兵
Above, by registering one or more delegate instances for the event with + =, in fact, you can also directly register methods for the event.
吕馨却有些不乐意，说道：一看你的样子，就是在敷衍。
小草走上前帮忙打水，一边敬佩地看着于嬷嬷。
"These gifts need money to buy."
痞子蔡每晚在网上与轻舞飞扬的交流成了一种默契，他向轻舞飞扬描述在网络上通常存在的三种人，并告诉轻舞飞扬她就是“第二种人”，并猜测她或者即将老去，或者时日无多，沉默良久的轻舞飞扬对他说，她很想见他。
India's Kyanbitu vegetable market is booming. Here, there are a group of very poor peddlers. Every morning, they will borrow 1,000 rupees from the rich, then go to purchase the goods, and get 1,100 rupees back after selling them, while at night, they will give back 1,050 rupees to the rich.
