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NIO is a synchronous non-blocking I/O model and is also the basis of I/O multiplexing.That is to say, a total of false syn messages will occupy the TCP preparation queue for 63s, while the semi-connected queue defaults to 1024, which is different by system default and can be viewed by cat/proc/sys/net/ipv4/tcp_max_syn_backlog c. That is to say, sending 200 fake syn packets per second without any protection is enough to burst the semi-connection queue, thus preventing the real connection from being established and responding to normal requests. The end result is that the server has no time to ignore the normal connection request-denial of service.开放二胎政策后，周凝雪为家里迎来刚出生的妹妹而忧虑，在校舞蹈团的同学，唐梓琦、唐梓瑶、徐梓轩、徐梓晗姐妹和兄妹，薛嘉慧、薛嘉凯、薛嘉旋姐弟妹三人，和同学贺思珍、童雨晨的影响下，放下心结，欣然接受了新生妹妹的到来。I am the only Kirgiz reporter in the 85-year history of Xinhua News Agency. Over the years, I have traveled tens of thousands of kilometers and interviewed many stories about border protection. As a reporter, I will use the power of news to continue the story of Kirgiz people protecting the border.何永强也不明白，舅舅究竟有什么能耐，一封信竟然真的让海瑞停手。　　于是在《少男奶爸 第三季》中，Ben和Riley开始适应从友情到爱情的转变，但这让Riley陷入极其尴尬的境地。Bonnie在不征求Ben的意见的情况下将Emma的生母Angela引入他们的生活，Ben一直对此事耿耿于怀。Angela试图向Bonnie证明自己是一个合格的母亲，同时向往着与Ben「重新开始」……