test_icmp.py 文件源码

def setUp_with_echo(self):
        self.echo_id = 13379
        self.echo_seq = 1
        self.echo_data = b'\x30\x0e\x09\x00\x00\x00\x00\x00' \
            + b'\x10\x11\x12\x13\x14\x15\x16\x17' \
            + b'\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f' \
            + b'\x20\x21\x22\x23\x24\x25\x26\x27' \
            + b'\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f' \
            + b'\x30\x31\x32\x33\x34\x35\x36\x37'
        self.data = icmp.echo(
            id_=self.echo_id, seq=self.echo_seq, data=self.echo_data)

        self.type_ = icmp.ICMP_ECHO_REQUEST
        self.code = 0
        self.ic = icmp.icmp(self.type_, self.code, self.csum, self.data)

        self.buf = bytearray(struct.pack(
            icmp.icmp._PACK_STR, self.type_, self.code, self.csum))
        self.buf += self.data.serialize()
        self.csum_calc = packet_utils.checksum(self.buf)
        struct.pack_into('!H', self.buf, 2, self.csum_calc)