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If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. The end result is that the server has no time to ignore the normal connection request-denial of service. If you look at the SYN_RECV status on the server with the netstat-an command, you can see that there are a large number of connection states that are "SYN_RECEIVED"美容院职员曾小雨（郑裕玲 饰）贪恋演员男友，但无奈后者只把她当做佣人对待，惨遭劈腿的曾小雨伤心落魄，去朋友的聚会上寻找新欢，由此机缘巧合结识了富豪之子利志（钟镇涛 饰）。利志父亲因与人斗法，被对手张山以生命为代价化为青面鬼下降头诅咒利家绝子绝孙，这导致利志不能与女性正常接触，而在结合时则会马上丧命。曾小雨昔日同学沈慈航（万梓良 饰）勘破小雨命中定数，赠送驱邪彩带护身。曾小雨与利志初次接触便遭遇车祸，但在朋友们的撮合下，曾、利二人还是展开了交往，沈慈航出面警告二人，情路艰辛，但曾小雨与利志决定继续交往……　　“快乐鱼”由一个长袖善舞的女人“罗太”打理，生意火红。罗太的丈夫罗开金是个无能、得过且过的男人，年轻时结过两次婚，生了“两批”孩子，性格各异。若童、一芝、小艺三位初出茅庐的模特，面对时尚圈的光鲜靓丽，各自心怀站在T台巅峰的梦想，而在这一过程中，友情、爱情、亲情、诱惑、仇恨交织在一起，这是一段离奇梦幻的青春历程，是一场活色生香的玫瑰战争，有人站到了名声欲望之巅，方才感到高处不胜寒；有人因为疾病挫折而黯然离场，却意外重拾人生的美丽，而影片的主人公若童，最终在这美丽的王国中收获了最为珍贵的亲情……The first scheme is to use the general coding method to realize the preloading technology of the picture. First, create the imgNode element, Then when the method myImage.setSrc is called, a preloaded picture is given to the picture first, and when the picture is loaded, the img element is assigned a value. The second scheme is implemented by using proxy mode. MyImage function is only responsible for creating img elements, proxy function ProxyImage is responsible for setting loading pictures for the picture, and when the picture is really loaded, myImage.setSrc method in myImage is called to set the path of the picture. The advantages and disadvantages between them are as follows:末将会尽一切努力去做好的。离开宝库世界的阿里巴巴、马尔吉娜、小芝麻没有停下冒险的脚步，他们根据古籍寻找传说中的所罗门王宝藏，无意中释放出了被封印的魔鬼，魔鬼发誓要报复人类。为了弥补自己的过失，他们踏上了寻找封印瓶，重新封印魔鬼的征途……根据所罗门王的指引，他们来到羊驼王子开发的小岛，在这遇到了 老对手强盗三人组，他们能够打败强盗寻找到封印瓶吗？小伙伴们能够成功封印魔鬼吗？在前方等待他们的又将会是什么呢……