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).
守在王府角门前的那个亲卫见了,使劲揉揉眼睛——没错,是年轻的书生出来了。
Pan is infatuated with wine and meat, and his life returns to reality and cannot extricate himself from his blood type.
海瑞苍老瘦弱的身体,在嘉靖面前经受着一次次的摧残。
《我爱大小姐》是由吴淡如,林慧萍主持,东森综合台播出的一档全新谈话性节目,讲诉女人间的那些事。
The picture shows Mr. Sun and his team members communicating with each other.
Embedded Script Engine Jx9
小葱见黄瓜面沉如水,抿嘴偷笑,又瞪了板栗一眼。
学美术的允珠(李尚熙)在准备毕业展示时遇到了一名经常引起她注意的人。允珠从对方和自己偶然相撞的眼神中感受到了温暖,渐渐地被对方吸引了。一边打零工一般寻找梦想的智书(柳善英)在某个寒冷的冬日里遇到了用温暖的眼神看着自己的某人。不久后,再次邂逅那个人的智书遵从内心向她伸出了手。
在男主角闫夏的世界里,只有两个最重要的人。一个是自己的亲弟弟闫冬,另一个是自己唯一心动过的女人韦雪。然而,闫夏对弟弟的爱,却把弟弟给宠废了。而闫夏对韦雪的爱,也换来了彻底的背叛。
她比黎水大了几岁,已经发育得很丰满,想把一对丰乳压下去,塑造出黎水这样自然的效果。
星光灿烂剧照(10张)
何永强指着信上的字展示给差役看,海知县疯了么?他没田地没家丁么?还真有三位。
随着肾上腺素被柴米油盐取代,罗易明和俞越发现爱情的升级版——婚姻并不是他们想象的样子,他们每一天都会遇到新问题,都会遭遇新的考验。在日常琐事中,他们摸索着婚姻之道,解决着他们的一个又一个“第一次”。
3. If new bleeding is superimposed 0.5 s before the end, the same type of bleeding will not be interrupted, but will disappear in turn according to the duration of superposition.