sixlowpan.py 文件源码

def compressSourceAddr(self, ipv6):
        #print "compressSourceAddr"
        tmp_ip = socket.inet_pton(socket.AF_INET6, ipv6.src)

        if self.sac == 0:
            if self.sam == 0x0:
                tmp_ip = tmp_ip
            elif self.sam == 0x1:
                tmp_ip = tmp_ip[8:16]
            elif self.sam == 0x2:
                tmp_ip = tmp_ip[14:16]
            else: #self.sam == 0x3:
                pass
        else: #self.sac == 1
            if self.sam == 0x0:
                tmp_ip = "\x00"*16
            elif self.sam == 0x1:
                tmp_ip = tmp_ip[8:16]
            elif self.sam == 0x2:
                tmp_ip = tmp_ip[14:16]

        self.sourceAddr = socket.inet_ntop(socket.AF_INET6, "\x00"*(16-len(tmp_ip)) + tmp_ip)
        return self.sourceAddr