ArpPacket¶

Namespace: inet

class ArpPacket

ARP packet. This is a specialized version: prepared for IEEE 802 hardware addresses and IPv4. Packet fields are therefore represented by C++ classes MACAddress and IPv4Address. Also, some ARP protocol header fields are not modelled explicitly (their values are implied):

hardwareType (not needed for modeling);
protocol type (0x800 IPv4)
hardware address length (6)
protocol address length (4)

Usage diagram¶

Inheritance diagram¶

Extends¶

Name	Type	Description
FieldsChunk	class	(no description)

Fields¶

Name	Type	Description
id	int
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
chunkLength	b
rawBin	string[]
rawHex	string[]
regionTags	SharingRegionTagSet::TagBaseRegionTag[]
chunkLength		ARP header length for IPv4 (4-byte addresses) and 802 LANs (6-byte MAC addrs)
opcode	ArpOpcode
srcMacAddress	MacAddress
destMacAddress	MacAddress
srcIpAddress	Ipv4Address
destIpAddress	Ipv4Address

Properties¶

Name	Value	Description
beforeChange	handleChange()
descriptor	readonly
existingClass
packetData

Source code¶

//
// ARP packet. This is a specialized version: prepared for IEEE 802 hardware
// addresses and IPv4. Packet fields are therefore represented by C++ classes
// MACAddress and IPv4Address. Also, some ARP protocol header fields are
// not modelled explicitly (their values are implied):
//   - hardwareType (not needed for modeling);
//   - protocol type (0x800 IPv4)
//   - hardware address length (6)
//   - protocol address length (4)
//
class ArpPacket extends FieldsChunk
{
    // ARP header length for IPv4 (4-byte addresses) and 802 LANs (6-byte MAC addrs)
    chunkLength = B(28);
    ArpOpcode opcode;
    MacAddress srcMacAddress;
    MacAddress destMacAddress;
    Ipv4Address srcIpAddress;
    Ipv4Address destIpAddress;
}

File: src/inet/networklayer/arp/ipv4/ArpPacket.msg