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).
工体摇曳的霓虹夜色，一群不甘寂寞的青年男女：辛小野、苏小暖以及夏泽成、于左左、钱碎碎、海歌、米粒、戴飞等身份各异的人，因为一场宿醉而彼此纠葛，这种纠葛由酒精催化，也因酒精而升华，彼此在最后都收获了一份感动和认知的爱情故事。
The principle of opening and closing means opening to expansion and closing to modification. When the program needs to be expanded, the original code cannot be modified, but the original code should be expanded to achieve a hot plug effect. Therefore, a summary of one sentence is: in order to make the program scalable, easy to maintain and upgrade. To achieve this effect, we need to use interfaces and abstract classes, etc. We will mention this point in the later specific design.
女主角的名字将是阿拉塔·娜露，同样是13岁，是与青一同成长的青梅竹马。娜露因为童年时的事故而使拥有”ユタ”的力量(犹达，是日本冲绳以占卜为职业的灵媒师的名称)的眼睛醒觉。娜露有能够听懂珊瑚岩心声的特异功能，这是因为珊瑚岩的一部分在她体内成长，从某种程度上来说她和珊瑚岩存在部分融合，但正是因为这样，导致她自小身体虚弱，需要把氧气放入在手上的吸氧器，现与父亲、妹妹及祖母一同生活中。
白胜祖(金贤重)：不仅有着让女生都羡慕的完美外表，而且IQ超高，学习成绩全校第一，非常有运动细胞，财力也是超凡，只是这位让人感叹命运不公平的男生却是个做任何事都不带笑容，性格枯燥无味的冷淡男生。 吴荷妮(郑素敏)：与白胜祖同校的笨拙专业户，却有着一颗善良，乐于助人的心。自从对白胜祖一见钟情后吴荷妮发奋要改写自己倒数的成绩，并为了感动他做了一件又一件傻事，最终赢得了他的心。
看到比剑这等结局时，先是点点头，旋即又摇摇头。
Heavy traffic attack
电影《银狐传说》讲述了当人类和狐仙的感情，遭遇了维护正义的捉妖师的阻隔下的纠葛。影片结合时下热点，以人狐恋为主线，一方面展现人性的本质，一方面向人们传达世间的真情流动。
先是给了周婆子一耳光，打得她当场鼻子流下血来。
Table tennis
当一名护士下载一个声称可以预测一个人死亡时间的应用时，它告诉她，她仅剩三天的生命。 随着时间的流逝、未知的某人/物阴魂不散，她必须在时间耗尽之前找到一种方法来自救。
你为什么不快乐？唐伯虎看着抽水烟喝酒划拳打麻将玩牌九玩筛子、口吐脏话、动作粗暴的八位温柔娴淑、持家有道的娇妻，再看着这乌烟瘴气、一塌煳涂的家，咧着嘴，做出一个极其苦涩的笑容：我…很…快…乐……噗哈哈哈太好笑了……我都快笑得喘不过气来了……影厅里，大家再次笑到不行，这已经不知道是第几次笑倒一大片了。
这两艘船，满载着对汪直友谊的诚意，以及对某人深深的恶意。
Developers use virtualenv to manage multiple development environments
Condition 6: Critical Strike Changed to 80% 4826.4832
待两人走后，韩信看着小几之上一张有效简陋的地图，呆呆地有些出神了。
SSL can encrypt the network at the transport layer to prevent the transmitted data plaintext from being monitored and intercepted, but SSL protocol encrypts it. Decryption and key negotiation processes consume a lot of system resources and severely degrade machine performance
The death toll from World War II in China has been unclear because the statistics are unclear. Scholars estimate that there are 12-18 million people. However, after the 1990s, the data gradually became clear: about 18 million. Among them, the death toll of soldiers is about 1.48 million, of which 1.35 million are from the national army, more than 100,000 to 120,000 are from the communist army (including guerrillas), and the rest are civilians.
