十六进制字符串：a="CC DD 01 61 F6 01 00 64 A4 81 00 00 00 8B"
b=bytes.fromhex(a) 转为字节
from socket import *
b=bytes.fromhex(a)
udpSocket=socket(AF_INET,SOCK_DGRAM)
udpSocket.sendto(b,("192.168.3.22",8280))
