TCP is connection-oriented, and a connection must be established between either side before sending data to the other. In TCP/IP protocol, TCP protocol provides reliable connection service, and the connection is initialized by three-way handshake. The purpose of the three-way handshake is to synchronize the serial numbers and acknowledgement numbers of both parties and exchange TCP window size information. The process of shaking hands can be represented by the following figure
身患绝症的李阎，机缘巧合之下进入光怪陆离的阎浮世界，凭借着一身硬功夫一步步成为强者。而在行走于一个个阎浮世界的过程中，他也开始发现这个世界真正的秘密。
陈水墨是某大学美术系的学生，在乡下写生时机缘巧合结识了林老爷，两人相谈甚欢，林老爷力邀水墨到府上做家教。然而当陈水墨跨进林家大门的一瞬间，她的心脏就非常难受，不得不服药缓解。原来水墨曾因心脏不好，一年前换了一颗心，换给她心的人正是因杀人被枪决的林家四姨太锦瑶。在林家，水墨总被一种说不出的异样感觉笼罩，她的心在日夜哀嚎，似乎有冤情，为此水墨开始重新调查四姨太杀人的案件。 那么，四姨太是冤死的吗？案件背后有着怎样的隐情？
In real life, there are many requests that cannot be made by one person. For example, the salary at the interview may be decided by the technical manager if it is less than 10,000, but the salary between 10,000 and 15,000 may not be approved by the technical manager and may need to be approved by the technical director.
If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.
Best-selling writers who are familiar with writing skills often use a clear action rule, such as "practice 10,000 hours to become an expert" and "form good habits in 21 days" to stimulate your action. However, it ignores how many people can stick to 10,000 hours, whether 10,000 hours really lead to success, the key node of sticking to 10,000 hours, and what is the essence of 10,000 hours of practice. The details that these best-selling authors skip are precisely the places where science is the most touched and is the most helpful place for people to improve themselves.
爱情多次失败的美女作家顾铭明沉浸在自己幻想的爱情故事中无法自拔。某天，她躺在浴缸里向闺蜜汇报着相亲失败的消息，手机掉落进浴缸并幻化成了一个男人，经过一番折腾和印证，顾铭明相信男子就是自己的手机，并给他取名自己小说男主角的名字岳晨朗。当两人幸福的生活在一起之际，岳晨朗的身体已经支撑不住，即将回归到手机形态……
Vocabulary Introduction:
退一万步说，镇国公夫人就是田遥亲娘，那他更不愿意他认她——儿子得知被亲娘遗弃、践踏，如何能受得了？所以他死也不肯认。
由ICE携带三位帅哥主演，一个女人和三个男人一台戏！有蠢动的心就有爱的春天!!!
The picture comes from the Internet.
“让我们成为老虎”，由斯蒂芬妮·阿贝尔·霍洛维茨编剧和导演。
电影讲述的是一个经历残酷青春的少年为爱复仇不惜付出生命的故事。
前无去路，后有追兵，走投无路之下，他们仓惶遁入了莽莽无边、与世隔绝的热带丛林——泰缅寮交界神秘的金三角。从此，这支溃败之兵——国民党残军93师，离乡去国，开始了他们悲怀惨烈、无可奈何的另一种命运。 历经多种尝试，付出惨痛的代价，最终是不能逆转历史的滔滔洪流，当政治幻想破灭，政治使命结束后，在一片远离文明的热带丛林，在一种完全孤立的处境中，如何生存下去成了这批打过二战、打过中共，打过泰缅联军的丛林游……
该剧由东方佳视（北京）文化传媒有限公司出品，李伯勋执导。讲述了动荡不安的民国时期，因发生一起警方无法解决的连环杀人案，迫不得已下召集了破案神探隆泷、神偷钱空、百变卧底蓝若心三人协助破案，三个天才人物明争暗斗各自为营，但在同患难后渐渐成为配合默契的搭档，当三人为自己侦破的谜题沾沾自喜时，更大的危机正在悄然而至。
《簋街的鬼》是由祝东宁导演，李昊臻、高晓菲、李楠、李耕、刘子赫主演的电影。影片剧情简介：当代青年苟世雄酒醉后意外被一只羊肉串钎子插中头部，而这之后，他开始能看到常人看不到的事情。凭借这一意外打开的“天眼”，苟世雄的视觉开始在今生和前世之间“无缝转换”。而他最初发现的惊天秘密就是：他的前..。
韩商言和软萌学霸佟年偶然相遇，阳光单纯的佟年对韩商言一见钟情，并随着接触机会的增多，佟年被韩商言对梦想的执着、对团队年轻人的责任感深深吸引。韩商言因为心怀梦想要带领团队为中国取得世界冠军，故而多年来一直心无旁骛专心致志带团队。佟年对韩商言的体贴、理解和支持、包容，令不善言辞和情感表达的韩商言逐渐对往日兄弟和家人敞开心扉，取得理解。最终，两人坦承真心并互相鼓励，在彼此逐梦的路上携手前行……
(1) Basic Applications of Intent
