openLbr Package

openLbr Module

class openvisualizer.openLbr.openLbr.OpenLbr

Bases: openvisualizer.eventBus.eventBusClient.eventBusClient

Class which is responsible for translating between 6LoWPAN and IPv6 headers.

This class implements the following RFCs:

• http://tools.ietf.org/html/rfc6282 Compression Format for IPv6 Datagrams over IEEE 802.15.4-Based Networks.

• http://tools.ietf.org/html/rfc2460 Internet Protocol, Version 6 (IPv6) Specification

• *http://tools.ietf.org/html/draft-thubert-6man-flow-label-for-rpl-03

  The IPv6 Flow Label within a RPL domain

FLOW_LABEL_RPL_DOMAIN = True

F_FLAG = 32

IANA_ICMPv6 = 58

IANA_IPv6HOPHEADER = 0

IANA_PROTOCOL_IPv6ROUTE = 43

IANA_UDP = 17

IPHC_CID_NO = 0

IPHC_CID_YES = 1

IPHC_DAC_STATEFUL = 1

IPHC_DAC_STATELESS = 0

IPHC_DAM_128B = 0

IPHC_DAM_16B = 2

IPHC_DAM_64B = 1

IPHC_DAM_ELIDED = 3

IPHC_DISPATCH = 3

IPHC_HLIM_1 = 1

IPHC_HLIM_255 = 3

IPHC_HLIM_64 = 2

IPHC_HLIM_INLINE = 0

IPHC_M_NO = 0

IPHC_M_YES = 1

IPHC_NH_COMPRESSED = 1

IPHC_NH_INLINE = 0

IPHC_SAC_STATEFUL = 1

IPHC_SAC_STATELESS = 0

IPHC_SAM_128B = 0

IPHC_SAM_16B = 2

IPHC_SAM_64B = 1

IPHC_SAM_ELIDED = 3

IPHC_TF_1B = 2

IPHC_TF_3B = 1

IPHC_TF_4B = 0

IPHC_TF_ELIDED = 3

IPv6_HEADER_LEN = 40

NHC_UDP_ID = 240

NHC_UDP_MASK = 248

O_FLAG = 128

R_FLAG = 64

SR_FIR_TYPE = 3

disassemble_ipv6(ipv6)

Turn byte array representing IPv6 packets into into dictionary of fields.

See http://tools.ietf.org/html/rfc2460#page-4.

Parameters:ipv6 – [in] Byte array representing an IPv6 packet. Raises :ValueError when some part of the process is not defined in the standard. Raises :NotImplementedError when some part of the process is defined in the standard, but not implemented in this module. Returns:A dictionary of fields.

ipv6_to_lowpan(ipv6)

Compact IPv6 header into 6LowPAN header.

Parameters:ipv6 – [in] A disassembled IPv6 packet. Raises :ValueError when some part of the process is not defined in the standard. Raises :NotImplementedError when some part of the process is defined in the standard, but not implemented in this module. Returns:A disassembled 6LoWPAN packet.

lowpan_to_ipv6(data)

reassemble_ipv6_packet(pkt)

reassemble_lowpan(lowpan)

Turn dictionary of 6LoWPAN header fields into byte array.

Parameters:lowpan – [in] dictionary of fields representing a 6LoWPAN header. Returns:A list of bytes representing the 6LoWPAN packet.