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Avoid coupling the sender and receiver of the request, make it possible for multiple objects to receive the request, connect these objects into a chain, and pass the request along this chain until an object processes it. This is the responsibility chain mode. In the responsibility chain mode, it is possible for each object to process the request, thus realizing decoupling between the sender and receiver of the request. At the same time, the responsibility chain mode simplifies the structure of the object, which makes each object only need to refer to its successor without knowing the whole chain, thus improving the flexibility of the system and making it more convenient to add new request processing classes. However, we cannot guarantee that all requests can be processed in the responsibility chain, and it is not conducive to observing runtime characteristics.人的一生与命运的交织，就如同你与你的英子，你无法时时看见，但它却无法摆脱。就好像生活中的艰辛与困苦，你除了面对，无法闪躲，因为命运的捉弄，常常如影随行。 年轻华裔小伙杰的人生并不灿烂，因为命运很少善待过他。生父被黑帮杀死，又被生母抛弃的杰被人捡养后，如同夹缝中生长的野草，艰难又渴望地成长着。养父酗酒，动辄打骂。在获知生母在曼谷的消息杰孜然一身来到陌生的城市一心想寻回母亲，迫于生计浪迹于黑帮，内心渴望能像普通人一样过着正经平淡的生活，命运却偏偏将他推向黑帮争斗的漩涡。杰也想抓住命运出人头地，为了自己也为了身边的人，然而他的内心却不愿将自己的命运与仇杀罪恶捆绑一起，因此常常感到痛苦纠结。心仪女孩的离去，无法回应的爱，讨生活的困厄与不易，把杰一次又一次地拖入苦痛的境地，挣扎反抗的杰最不愿的说的两个字却是——妥协 。顿时毛骨悚然，对着旷野用变了腔调的声音喝道：谁？胡镇吓了一跳，气得骂道：狗东西。For spoofing attacks, the first thing to consider is to choose the address. For the attack to succeed, the host on the spoofed IP address must not respond to any SYN-ACK packets sent to them. A very simple method that an attacker can use is to disguise only one source IP address, and this IP address will not respond to SYN-ACK packets, perhaps because there is no host on this IP address at all, or because some configuration has been made to the address or network properties of the host. Another option is to disguise many source addresses, and attackers will assume that hosts on some of these disguised addresses will not respond to SYN-ACK packets. To implement this method, you need to recycle the addresses on the list of source IP addresses that the server wants to connect to, or make the same modifications to hosts in a subnet.倔强的人为了爱人奔走在空城，讨血汗钱的农民工巧合下驰援武汉，抗疫前线的人们除了顶着高压还要学会告别，后方阵地的社区工作者照顾居民却把风险留给了自己，平时疏于交流的父子也被迫日夜相处。总有一些措手不及的事情发生，但也总有一颗治愈的种子在人们心中生根发芽，这是一部关于春天和希望的电影。NBC宣布提前续订《芝加哥烈焰》第五季。没有什么职业能比在芝加哥第51消防队当一名消防员更有压力和危险同时又令人激动了。这是一群在大多数人面临危险夺路而逃的时候挺身而出的人们。但是胜任这份工作的崇高使命也使得他们不得不付出一些个人代价。