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So far, a simple file upload program has been written. Of course, this is still a counterexample. The disadvantage here is the same as the first code in the light example. The program is full of if and else conditional branches. The state and behavior are coupled in a huge method. It is difficult to modify and extend this state machine. This problem is exacerbated by the complexity of the links between file statesFor Ethernet, the minimum packet length data segment must reach 46 bytes, while the attack message is only 40 bytes. Therefore, the network card will do some processing when sending, filling 6 zeros at the end of the TCP header to meet the minimum packet length requirement. At this time, the length of the entire packet is 14 bytes of Ethernet header, 20 bytes of IP header, 20 bytes of TCP header, plus 6 bytes of 0 filled due to the minimum packet length requirement, totaling 60 bytes.下面还缠着一层单布，他却不管了，三下两下，从解开的灰色布条里抖出一团结块的草灰来。等周行文再次睁开眼睛的时候，他从镜子上看到了一个年轻的自己，那是一个青春、精力旺盛、充满了朝气、眼中有着无穷希望的青年。相对世界 The Relative WorldsString exp = "8 +8";1. Filter gateway protection