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This leads to an obvious potential DoS attack. Incoming SYN packets will be allocated too many TCB and the host's kernel memory will be exhausted. In order to avoid this memory depletion, the operating system usually associates a "backlog" queue parameter with the listening interface, which maintains both the upper TCB number of connections and the SYN-RECEIVED state. Although this scheme protects the host's available memory from attack, the backlog queue itself brings a (small) source of attack. When there is no space in the backlog, it is impossible to respond to new connection requests unless the TCB can be recycled or removed from the SYN-RECIEVE state.(4) Whenever all ready I/O events of interest are processed, the Reactor thread will execute select () blocking again to wait for the new event to be ready and assign it to the corresponding processor for processing.听过云青山的禀报，尹旭立即从其中抓住这样几个关键点。项梁称桓楚逃亡，只有项羽知其下落，项羽这才有机会接近殷通，将其斩杀，夺得会稽兵权。丁隐（陈伟霆 饰）是蜀山派的弟子，他的体内有掌门诸葛驭我所打入的传世珍宝赤魂石，诸葛驭我想要将天赋异禀的丁隐培养成武林高手，打败他的宿敌绿袍尊者（吴奇隆 饰），为武林除害，造福江湖。