Igmpv3Query

class

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

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
Igmpv2Query	class	FIXME Igmpv1Query and Igmpv2Query differs only value of code field.

Fields

Name	Type	Description
chunkLength	b
resv	uint8_t	maxRespTime stored in `code` in units of 1/10 second 0-127: 0-12.7s 128-255: 1eeemmmm : (mant \| 0x10) << (exp + 3)
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
maxRespTimeCode	uint8_t	stored in `code` in units of 1/10 second, 0.1-25.5s
type	IgmpType	1 byte
groupAddress	Ipv4Address
crc	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).
crcMode	CrcMode	0 bytes, inet only
mutable	bool
complete	bool
correct	bool
properlyRepresented	bool
rawBin	string[]
rawHex	string[]
tags	RegionTagSet::cObjectRegionTag[]

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