Class RTPSSubMessage_HEARTBEAT

scapy/contrib/rtps/rtps.py:360–410

0...2...........7...............15.............23...............31 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | HEARTBEAT | flags | octetsToNextHeader | +---------------+---------------+---------------+---------------+ | EntityId rea

class RTPSSubMessage_HEARTBEAT(EPacket):
    """
    0...2...........7...............15.............23...............31
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |   HEARTBEAT   |     flags     |      octetsToNextHeader       |
    +---------------+---------------+---------------+---------------+
    | EntityId readerEntityId                                       |
    +---------------+---------------+---------------+---------------+
    | EntityId writerEntityId                                       |
    +---------------+---------------+---------------+---------------+
    |                                                               |
    + SequenceNumber firstAvailableSeqNumber                        +
    |                                                               |
    +---------------+---------------+---------------+---------------+
    |                                                               |
    + SequenceNumber lastSeqNumber                                  +
    |                                                               |
    +---------------+---------------+---------------+---------------+
    | Counter count                                                 |
    +---------------+---------------+---------------+---------------+
    """

    name = "RTPS HEARTBEAT (0x07)"
    fields_desc = [
        XByteField("submessageId", 0x07),
        XByteField("submessageFlags", 0),
        EField(ShortField("octetsToNextHeader", 0),
               endianness_from=e_flags),
        EnumField(
            "reader_id",
            default=b"\x00\x00\x00\x00",
            fmt="4s",
            enum=_rtps_reserved_entity_ids,
        ),
        EnumField(
            "writer_id",
            default=b"\x00\x00\x00\x00",
            fmt="4s",
            enum=_rtps_reserved_entity_ids,
        ),
        EField(IntField("firstAvailableSeqNumHi", 0),
               endianness_from=e_flags),
        EField(IntField("firstAvailableSeqNumLow", 0),
               endianness_from=e_flags),
        EField(IntField("lastSeqNumHi", 0),
               endianness_from=e_flags),
        EField(IntField("lastSeqNumLow", 0),
               endianness_from=e_flags),
        EField(IntField("count", 0),
               endianness_from=e_flags),
    ]


class RTPSSubMessage_INFO_DST(EPacket):