麻d国产传媒大象

勇者与魔王持续征战的世界。勇者与魔王释放的壮烈的魔法穿越世界，在一个高中的教室里爆炸了。死在那场爆炸中的学生们，转生到了异世界。在班级里位于最下层的主角偏偏转生成了蜘蛛魔物。但在异常强大的精神力下接受了现状。这是变成蜘蛛魔物的主角这样那样的生存物语。In short, the proxy mode provides an interface consistent with the real class, which is intended to be used to proxy the class to access the real class, the skin mode is intended to simplify the interface, and the adapter mode is intended to transform the interface.Https://www.jiemian.com/article/1971548.htmlSpend your spare time on upgrading your own quality-such as reading plan, skills training, etc. The poverty of the poor is often a double deprivation: lack of money and time. Therefore, we must learn to plan our spare time and, when necessary, learn to replace time with money like Ma Jun.In TCP implementation, when receiving the SYN request from the client, the server needs to reply the SYN + ACK packet to the client, and the client also needs to send the confirmation packet to the server. Usually, the initial serial number of the server is calculated by the server according to certain rules or adopts random numbers. However, in SYN cookies, the initial serial number of the server is obtained by hash operation and encryption of the client IP address, client port, server IP address, server port and other security values, which is called cookie. When the server suffers from SYN attack and makes the backlog queue full, the server does not reject the new SYN request, but replies the cookie (SYN serial number of the reply packet) to the client. If it receives the ACK packet from the client, the server subtracts 1 from the ACK serial number of the client to obtain the cookie comparison value, and performs a hash operation on the above elements to see if it is equal to the cookie. If equal, complete the three-way handshake directly (Note: At this time, you don't need to check whether this connection belongs to the backlog queue).