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In addition to solving the port problem of A, the serial number problem also needs to be paid attention to. The serial number corresponds to the sliding window. The fake TCP packet needs to be filled with the serial number. If the value of the serial number is not in the sliding window of B when it is sent to B before A, B will actively discard it. So we need to find the serial number that can fall into the sliding window between AB at that time. This can be solved violently, because the length of a sequence is 32 bits, and the value range is 0-4294967296. If the window size is like 65535 under Windows I caught in the above figure, I only need to divide, and I know that at most I only need to send 65537 (4294967296/65535=65537) packets to have a sequence number fall into the sliding window. The desired value can be calculated quickly by exhaustion on multiple control hosts.As for us, through a shortcut of knowledge, just a few days of experiences came to teach us these facts, that multiple species of plants can be used as dyes and that plants carry most of the pigments. However, most of these pigments are fragile and break down easy over time, or once the fabric is washed. Only pigments that well resist oxidation make up valuable dyes.果真跟胡敦说的，跟郑老太太和赵侍郎的娘吵了一场后，她也带着泼妇骂街的架势了。Many people's impression of type B blood is too rigid, I think they are too shy or not too talkative, and they are definitely not liked by girls, but if you know people with type B blood, you will definitely be attracted by them, because they are really too interesting. They don't like to talk and are silent. They are just the attitude towards outsiders. After you get acquainted with people with type B blood, you will find their interesting souls.够了，这不是我关心的事，待我五月乡试中举，公子再说这话不迟。板栗捏着她鼻子戏道：学着做人媳妇？我觉得你很有些手段哩。Client: Customer Class