python嗅探器_Python中的包嗅探器
我想在Python 3.5中做一个包嗅探器，它捕获UDP、TCP和ICMP。这是一个简短的例子：import socket
import struct
# the public network interface
HOST = socket.gethostbyname(socket.gethostname())
# create a raw socket and bind it to the public interface
s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_IP)
s.bind((HOST,0))
# Include IP headers
s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
# receive all packages
s.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON)
# receive a package
n=1
while(n<=400):
print(Number , n)
data=s.recvfrom(65565)
packet=data[0]
address= data[1]
header=struct.unpack(!BBHHHBBHBBBBBBBB, packet[:20])
if(header[6]==6): #header[6] is the field of the Protocol
print("Protocol = TCP")
elif(header[6]==17):
print("Protocol = UDP")
elif(header[5]==1):
print("Protocol = ICMP")
n=n+1
问题是它只捕获UDP数据包：(
输出：Number 1 Protocol = UDP Number 2 Protocol = UDP Number 3 Protocol = UDP Number 4 Protocol = UDP Number 5 Protocol = UDP Number 6 Protocol = UDP Number 7
有两种选择：嗅探器只能捕获UDP数据包。
我刚收到UDP数据包。
我认为最合理的答案是我的嗅探器工作不正常，它只是捕获UDP。知道吗？
我想在Python 3.5中做一个包嗅探器，它捕获UDP、TCP和ICMP。这是一个简短的例子：import socket import struct # the public network interface HOST = socket.gethostbyname(socket.gethostname()) # create a raw socket and bind it to the public interface s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_IP) s.bind((HOST,0)) # Include IP headers s.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1) # receive all packages s.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON) # receive a package n=1 while(n<=400): print(Number , n) data=s.recvfrom(65565) packet=data[0] address= data[1] header=struct.unpack(!BBHHHBBHBBBBBBBB, packet[:20]) if(header[6]==6): #header[6] is the field of the Protocol print("Protocol = TCP") elif(header[6]==17): print("Protocol = UDP") elif(header[5]==1): print("Protocol = ICMP") n=n+1 问题是它只捕获UDP数据包：( 输出：Number 1 Protocol = UDP Number 2 Protocol = UDP Number 3 Protocol = UDP Number 4 Protocol = UDP Number 5 Protocol = UDP Number 6 Protocol = UDP Number 7 有两种选择：嗅探器只能捕获UDP数据包。 我刚收到UDP数据包。 我认为最合理的答案是我的嗅探器工作不正常，它只是捕获UDP。知道吗？