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Separate the abstract part from its implementation part so that they can all change independently.体力太差跑不动？老是忘东又忘西！原来人类的烦恼有可能不是自己造成的，而是烦恼星人制造的！还好，智商500的女娃博士用勇气与快乐能量创造出《超迷你战士》来帮助人类打败烦恼！虽然在大决战中暂时打退了可恶的烦恼星人，但是更强大的新烦恼星人又来了，据说他从不犯错，完美至极！与此同时，女娃博士更是面临了新挑战，有着一顶红头发，不可一世的地表最强小学生出现了！来势汹汹的他，到底是敌人还是朋友？面对不断涌现的烦恼与挑战，迷你勇和迷你萌迎难而上，一边努力进化自己，一边为人类不断战斗！有烦恼吗？快呼叫超迷你战士，打败你的烦恼！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).As bitcoin prices soared to more than US ,000, we saw new attacks surging in an attempt to steal Google cloud computing resources for mining. Later in this article, I will introduce how we discovered these new attacks.该剧是讲述理疗师、复健治疗师、X光操作师、实习生、护士等在医院工作的人们的故事。