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PS: Many forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated. Maybe Microsoft will launch a new SOA implementation scheme at that time. Wouldn't it be a waste of time to learn in depth, so they feel that there is no need to learn in depth and just know how to use them. I had the same feeling about this problem before, but now I think that although WCF technology may be replaced, the key to understanding a technology in depth is not to know some more advanced API calls, but to understand its implementation mechanism and way of thinking. Even if the latter technology is replaced, the mechanism behind it is definitely similar. Therefore, if you have a thorough understanding of a technology, you will feel familiar with the new technology and relaxed about it. In addition, after you have a thorough understanding of a technology, you dare to say that you have mastered the technology well during the interview, instead of saying that you use it a lot at ordinary times. Once you ask deeply, you do not know the implementation principle behind it. This is also why I want to write WCF series. I hope this opinion is helpful to some beginners.In order to improve the sending efficiency and generate more SYN waiting queues at the server, when the attack program fills the header, neither the IP header nor the TCP header is filled with optional fields, so the length of the IP header is exactly 20 bytes, and the TCP header is also 20 bytes, totaling 40 bytes.28岁的图书管理员曾鲤因为矫正牙齿认识了牙科副主任医师艾景初，两人共同经历雪夜同行、福利院捉迷藏、海盗船跨年……一路从误会到熟识，慢慢走进对方心里。就在两人准备互诉情愫的时候，曾鲤等待了十年的“初恋”对象、艾景初最好的朋友于易回国，对曾鲤展开猛烈追求。看过曾鲤的小说《小于和小鱼儿的故事》后，艾景初误会曾鲤心里喜欢的人一直是于易，放弃表白计划、决定去非洲执行医疗援助任务。曾鲤却因为于易的突然告白更加明确了心中所爱，义无反顾地回到艾景初身边，两个有情人终成眷属。只得去陪自己娘家人，让儿媳妇招呼这些富贵夫人。人称赌王的何必发（陈百祥 饰）以经营麻雀馆起家，如今早已功成名就，富贵荣华，成为香江的一代名流。随着他年事渐高，何家那泼天的财富也便成为亲族们争夺的焦点。为此，何必发的妻子曼娜（陈法蓉 饰）与何的两个妹妹苏菲（元秋 饰）、玲姐（张文慈 饰）展开连番的明证暗斗，她们无一不想让自己的孩子称谓合法继承人。偏偏她们三人的孩子又都不太成器，令何必发爱不得恨不得。Top one, son