Igmpv3Query¶

Namespace: inet

class Igmpv3Query

Igmpv3Query extends Igmpv2Query, because Igmpv2 routers must accept Igmpv3Query packets.

Note: in Igmpv3Query the maxResponseTime field is renamed to maxResponseCode and it is interpreted differently than in Igmpv2.

Usage diagram¶

Inheritance diagram¶

Extends¶

Name	Type	Description
Igmpv2Query	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[]
type	IgmpType	1 byte
checksum	uint16_t	2 bytes, The checksum is the 16-bit one’s complement of the one’s complement sum of the whole IGMP message (the entire IP payload).
checksumMode	ChecksumMode	0 bytes, inet only
type
groupAddress	Ipv4Address
chunkLength
maxRespTimeCode	uint8_t	stored in `code` in units of 1/10 second, 0.1-25.5s
chunkLength		12 + sourceListArraySize * 4 maxRespTime stored in `code` in units of 1/10 second 0-127: 0-12.7s 128-255: 1eeemmmm : (mant \| 0x10) << (exp + 3)
resv	uint8_t	4 bit
suppressRouterProc	bool	1 bit, S flag
robustnessVariable	uint8_t	3 bit, QRV
queryIntervalCode	uint8_t	8 bit, QQIC, in seconds, format similar to macRespTime (0nnnnnnn or 1eeemmmm)
sourceList	Ipv4AddressVector	16 + n*32 bit

Properties¶

Name	Value	Description
beforeChange	handleChange()
descriptor	readonly
existingClass
packetData

Source code¶

//
// Igmpv3Query extends Igmpv2Query, because
// Igmpv2 routers must accept Igmpv3Query packets.
//
// Note: in Igmpv3Query the maxResponseTime field is
// renamed to maxResponseCode and it is interpreted
// differently than in Igmpv2.
class Igmpv3Query extends Igmpv2Query
{
    chunkLength = B(12);    // 12 + sourceListArraySize * 4
    // maxRespTime stored in `code` in units of 1/10 second
    //     0-127: 0-12.7s
    //   128-255: 1eeemmmm : (mant | 0x10) << (exp + 3)
    uint8_t resv = 0;    // 4 bit
    bool suppressRouterProc;    // 1 bit, S flag
    uint8_t robustnessVariable;    // 3 bit, QRV
    uint8_t queryIntervalCode;    // 8 bit, QQIC, in seconds, format similar to macRespTime (0nnnnnnn or 1eeemmmm)
    Ipv4AddressVector sourceList;    // 16 + n*32 bit
}

File: src/inet/networklayer/ipv4/IgmpMessage.msg