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《小伴龙户外安全》系列动画片，是为3-8岁的小朋友特别制作的讲述户外安全的一部小小动画片，把小朋友在日常生活中可能遇到的安全问题集合到一起，以动画的形式讲述出来，使小朋友更在故事中寓教于乐，学会保护自己2016年，一場婚宴正在舉行，而實際上是一場36歲的高中同學會…《快本22周年演唱会》是《快乐大本营》的会员衍生节目，整合快本中的精彩唱跳环节，通过快乐大本营22周年庆典的契机，以演唱会的形式，带给观众不一样的夏日体验。Good book!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forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated.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.At present, I have tested some games that need to be started by simulators, including Donkey Kong 23, Gangren and Gaia Fantasy Ji Chinese version.The firewall sets the SYN forwarding timeout parameter (the firewall for state detection can be set in the state table), which is much less than the timeout time of the server. When the client sends the SYN packet and the server sends the acknowledgement packet (SYN + ACK), if the firewall has not received the acknowledgement packet (ACK) from the client by the time the counter expires, it sends the RST packet to the server to cause the server to delete the half connection from the queue. It is worth noting that the setting of gateway timeout parameters should not be too small or too large. If the setting of timeout parameters is too small, it will affect normal communication. If the setting is too large, it will also affect the effect of preventing SYN attacks. This parameter must be set according to the network application environment.