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周夫子不住点头，神情感慨复杂。Compared with SYN cache method, SYN? Cookies technology does not need to allocate space at all when receiving a SYN. Because the most basic data that make up the connection state are encoded and compressed into the sequence number bits of SYN-ACK. For a legitimate connection, the server will receive an ACK message segment with a serial number (actually the serial number has been added by 1), then the basic TCB data will be regenerated, and a complete TCB will confirm that the data will be safely instantiated through decompression. This decompression can be successful even under severe attacks, because there is no storage load at all on the host side, only the load that calculates the encoded data into the ACK sequence number. The disadvantage is that not all TCB data can be added to the 32-bit sequence number segment, so some TCP options required for high performance cannot be encoded. Another problem is that such SYN-ACK message segments will not be forwarded (because forwarding requires complete state data).Today's problem mainly involves several: objects, triggering events, capturing events, executing processing, and blistering. This is actually the whole process of JS execution. The process of bubbling is very interesting. In fact, it is like a glass of water, but this glass of water is hierarchical, and the bottom is the object of the current trigger event. Then the higher the range, the larger the range. The top layer must be window and the penultimate layer must be document. In the process of floating up, the bubble will judge whether the layer currently reached has a binding event handling method. If there is any, the corresponding processing is executed. If not, it will continue to blister. Until you reach the top window window layer. We can do corresponding processing at any layer to prevent the event from continuing to bubble. The method is the method that calls the event object to prevent blistering. Event.stopPropagation (); The following is a process method written to verify JS event blistering.　　该片讲述了记者丁一为了揭开房地产销售内幕，他来到一家售楼处当起了售楼先生。在售楼部暗访时得知售楼小姐艾丽丽是一个利用自己的身体条件，色诱客户以达到销售业绩为目的销售房屋的内幕。从而揭示了大量不为人知的事情真相，行业的潜规则，描摹了底层社会众生相。《大债时代》描述当代年轻人踏入社会被迫面对负债的压力美剧《血族》改编自吉尔莫·德尔·托罗和Chuck Hogan联合出版的同名小说。承接第一季剧情，在本季中，人类和吸血鬼之间的战争仍在继续， “血祖”The Master 继续实施他的邪恶计划，而病毒已遍布全美，幸存者们不仅要对抗反派，还要继续寻找治疗病毒的方法。据悉，原著角色“昆兰”将登场，第一季血族突击队队长并非真正的昆兰。? Receives two parameters.