用raw socket 发送TCP报文有助于理解网络协议-used raw socket TCP packet sent to understand network protocol

mega16做的4*5矩阵按键程序，键值送至1602液晶显示，同时更新了proteus仿真，可在不搭建硬件平台的基础上实现调试及仿真，-mega16 do 4* 5 matrix key program, key sent to the LCD 1602, and updated the proteus simulation, you can not build a hardware platform based on the debugging and simulation,

网页抓包程序，可抓取地址，发送的参数、发送的字节数以及速率-Web page capture program, you can grab the address, the parameters sent the number of bytes sent and the rate

UDP扫描原理与TCP扫描原理不同，UDP扫描是通过向对方UDP端口发送数据，然后根据对方ICMP返回数据进行判断。接收ICMP数据包只能采用RAW Socket接收到所有的数据包，然后从中过滤出哪一个数据包是对方返回的，进而判断出对方端口是否处于开状态。-UDP scanning principle and TCP scanning works differently, UDP port scans are sent via UDP to the other data, and then re