inet.py 文件源码

def answers(self, other):
        if not isinstance(other,IP):
            return 0
        if conf.checkIPaddr and (self.dst != other.src):
            return 0
        if ( (self.proto == socket.IPPROTO_ICMP) and
             (isinstance(self.payload, ICMP)) and
             (self.payload.type in [3,4,5,11,12]) ):
            # ICMP error message
            return self.payload.payload.answers(other)

        else:
            if ( (conf.checkIPaddr and (self.src != other.dst)) or
                 (self.proto != other.proto) ):
                return 0
            return self.payload.answers(other.payload)