Second handshake: when the server receives syn packet, it must confirm the SYN (ack=j+1) of the customer, and at the same time it also sends a SYN packet (syn=k), that is, SYN + ACK packet. At this time, the server enters the SYN_RECV state;
20年前著名心理学家欧阳秋和好友兼同事的阮昊天（刘骐饰），前往黎明城一起参与一项秘密的研究项目，但是在研究过程中不知发生了何种变故，最终欧阳秋离奇坠楼而死，好友阮昊天（刘骐饰）也如人间蒸发一般神秘失踪，研究项目随即被叫停。
该剧讲述了家庭主妇苟吉祥因为追查丈夫死因还自己清白，加入巡捕房。遇到了傲慢公子毛儒毅等侦探，从此主妇励志大翻身，不仅侦破一个个悬疑案件，还收获了爱情。
The template method pattern defines the algorithm skeleton in an operation in an abstract class and delays the implementation of some specific steps to subclasses. The template method enables subclasses to redefine specific steps of the algorithm without changing the structure of the algorithm, thus achieving the effect of reusing codes. The specific structure diagram is shown below.
Shanxi Province
CDN refers to the static content of a website distributed to multiple servers so that users can access it nearby to improve the speed. Therefore, CDN is also a method of bandwidth expansion, which can be used to defend against DDOS attacks.
Event Handler: It consists of multiple callback methods, which constitute an application-related feedback mechanism for an event. There is no event handler mechanism in the Java NIO field for us to call or make callbacks, but we write our own code. Netty has made an upgrade in the role of event handler compared with Java NIO. It provides us developers with a large number of callback methods for us to implement corresponding callback methods for business logic processing when specific events are generated, namely ChannelHandler. The methods in ChannelHandler correspond to callbacks to each event.
于是亚齐人和马来人打了起来，不过并不是拼命打，而是乱打一气，最后双方都累了，就都走了。
Ctrl + B: grid capture mode control (F9)
紫月剑的粉丝无不兴奋得嗷嗷叫。
被困在绝地的村民们惶恐不安，每个小时都有人死去，命运似乎注定朝向了死亡，他们的生命和人性都承受着巨大的考验……
所以，江枫和邀月是一个彻底的悲剧。
便哄他们说，剩下的留给哥哥们晚上回来吃。
尹旭一笑：那好吧，既然如此，我们先等着这位客人就是了。
16岁的运动员蒂姆天赋异禀、表现优异。然而他所承受的压力让他几近崩溃，甚至无法挽回地触犯了人性的底线。
4. Every time the same type of skill determines that bleeding is successful, bleeding damage will occur directly after superposition.
李耕田、李耕地、刘胖子、周矮子、李长亮、刘三顺兄弟几个、孙铁柱、赵大嘴、李长星、李长雨……喊了老的问小的，又问没见着的，忽听说不在了，顿时鼻子发酸：光阴荏苒，已是物是人非了。
1. What is the difference and connection between denial of service attack and distributed denial of service attack?
诸先生很是相信尹旭，一挥手一名侍从立即到山坡下去通知苏岸等人。
