可是香荽，你可不能相信这些乱七八糟的事。
The ship had traces of being hit, and the paint on its hull actually belonged to the "Changsheng Wheel". The police brought the owner back for interrogation. The owner Wang Mou said that he rented the ship to an Indonesian and a man named Weng Siliang for tens of thousands of dollars.
朕想娶郑家紫茄做皇后。
Writer: (///
田遥起身，拱手道：请王爷放心。
马蹄震拂晓，风卷惊飞鸟，闪亮刀出鞘，酒酒醉带笑，英雄不留名，千里雨中行，搏杀崆峒顶，血染见豪情。
-w944
Fu Confucian Temple
这下青麦明白了，遂驾车拐出村道，往张家老宅旧址行去
噼啪作响的燃烧声中，两人都沉默下来。
而这玄龟就不同了，它的灵性是不受人间俗务影响的。
魔王城六张榻榻米一间！
So he will deliberately practice the variant.
SYN attack is a kind of DOS attack. It takes advantage of TCP protocol defects and consumes CPU and memory resources by sending a large number of semi-connection requests. SYN attacks can not only affect hosts, but also harm network systems such as routers and firewalls. In fact, SYN attacks can be implemented as long as these systems turn on TCP services no matter what systems are targeted. As can be seen from the above figure, the server receives the connection request (syn=j), adds this information to the unconnected queue, and sends the request packet to the client (syn=k, ack=j+1), then enters the SYN_RECV state. When the server does not receive an acknowledgement packet from the client, it retransmits the request packet and does not delete this entry from the non-connection queue until the timeout. With IP spoofing, SYN attacks can achieve good results, Typically, clients forge a large number of non-existent IP addresses in a short period of time, SYN packets are continuously sent to the server, and the server replies to the confirmation packets and waits for the confirmation of the customer. Since the source address does not exist, the server needs to continuously resend until it timeout. These forged SYN packets will occupy the unconnected queue for a long time, normal SYN requests will be discarded, the target system will run slowly, and in serious cases, the network will be blocked or even the system will be paralyzed.
Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:
Extended Match Criteria:
上世纪七十年代，赫山警备团团长周青卷入一场政治风波。周青的妻子石竹为保全五个孩子，被迫与丈夫离婚，同时强迫长子晓杨与热恋中的女友分手，远赴边疆从军，自己留在辽北小镇，艰辛抚育其他四个儿女。不幸的是，晓杨在战斗中英勇牺牲。石竹带着终身难以平复的愧疚，接纳了晓杨的爱人迎彤和遗孤瑶瑶。
