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(1) Reactor on the server side is a thread object, which will start the event loop and use Selector to realize IO multiplexing. Register an Acceptor event handler into the Reactor, which is concerned with the ACCEPT event, so that the Reactor listens for the connection request event (ACCEPT event) initiated by the client to the server.111. X.X.11Add a method called increment_number_served (), which allows you to increase the number of people eating. Call this method and pass it a value such as the number of diners you think this restaurant may receive every day.Correction周殷怎么也没想到，自己的一番推测，改变了自己的命运，也改变东南方诸侯国的形式，继而影响道天下局势。There are two waysThis 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.