The TCP/UDP type socket can only access the transport layer and the data above the transport layer, because when the IP layer passes the data to the transport layer, the lower data Baotou has been lost. The original socket can access the data below the transport layer, so you can use the raw socket to implement the data operation to the application layer, too. Data manipulation can be implemented down to the link layer

Filename	Size	Update
Raw socket\新建 文本文档.txt	2716	2018-05-02
Raw socket	0	2018-05-02

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