org.onlab.packet

Class IGMP

java.lang.Object

org.onlab.packet.BasePacket

org.onlab.packet.IGMP

All Implemented Interfaces:

IPacket

public class IGMP
extends BasePacket

Implements IGMP control packet format.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MINIMUM_HEADER_LEN
static Map<Byte,Deserializer<? extends IPacket>>	PROTOCOL_DESERIALIZER_MAP
static byte	TYPE_IGMPV1_MEMBERSHIP_REPORT
static byte	TYPE_IGMPV2_LEAVE_GROUP
static byte	TYPE_IGMPV2_MEMBERSHIP_REPORT
static byte	TYPE_IGMPV3_MEMBERSHIP_QUERY
static byte	TYPE_IGMPV3_MEMBERSHIP_REPORT

Fields inherited from class org.onlab.packet.BasePacket

parent, payload

Constructor Summary

Constructors

Constructor and Description
IGMP()

Method Summary

Modifier and Type	Method and Description
boolean	addGroup(IGMPGroup group) Add a multicast group to this IGMP message.
IPacket	deserialize(byte[] data, int offset, int length) Deserialize an IGMP message.
static Deserializer<IGMP>	deserializer() Deserializer function for IPv4 packets.
boolean	equals(Object obj)
short	getChecksum() Get the checksum of this message.
List<IGMPGroup>	getGroups() Get the list of IGMPGroups.
byte	getIgmpType() Get the IGMP message type.
byte	getMaxRespField() get the Max Resp Code.
int	hashCode()
byte[]	serialize() Serialize this IGMP packet.
void	setIgmpType(byte msgType) Set the IGMP message type.
void	setMaxRespCode(byte respCode) Set the Max Resp Code.

Methods inherited from class org.onlab.packet.BasePacket

clone, getParent, getPayload, resetChecksum, setParent, setPayload

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

TYPE_IGMPV3_MEMBERSHIP_QUERY

public static final byte TYPE_IGMPV3_MEMBERSHIP_QUERY

See Also:

Constant Field Values

TYPE_IGMPV1_MEMBERSHIP_REPORT

public static final byte TYPE_IGMPV1_MEMBERSHIP_REPORT

See Also:

Constant Field Values

TYPE_IGMPV2_MEMBERSHIP_REPORT

public static final byte TYPE_IGMPV2_MEMBERSHIP_REPORT

See Also:

Constant Field Values

TYPE_IGMPV2_LEAVE_GROUP

public static final byte TYPE_IGMPV2_LEAVE_GROUP

See Also:

Constant Field Values

TYPE_IGMPV3_MEMBERSHIP_REPORT

public static final byte TYPE_IGMPV3_MEMBERSHIP_REPORT

See Also:

Constant Field Values

PROTOCOL_DESERIALIZER_MAP

public static final Map<Byte,Deserializer<? extends IPacket>> PROTOCOL_DESERIALIZER_MAP

MINIMUM_HEADER_LEN

public static final int MINIMUM_HEADER_LEN

See Also:

Constant Field Values

Constructor Detail

IGMP

public IGMP()

Method Detail

getIgmpType

public byte getIgmpType()

Get the IGMP message type.

Returns:

the IGMP message type

setIgmpType

public void setIgmpType(byte msgType)

Set the IGMP message type.

Parameters:

msgType - IGMP message type

getChecksum

public short getChecksum()

Get the checksum of this message.

Returns:

the checksum

getMaxRespField

public byte getMaxRespField()

get the Max Resp Code.

Returns:

The Maximum Time allowed before before sending a responding report.

setMaxRespCode

public void setMaxRespCode(byte respCode)

Set the Max Resp Code.

Parameters:

respCode - the Maximum Response Code.

getGroups

public List<IGMPGroup> getGroups()

Get the list of IGMPGroups. The group objects will be either IGMPQuery or IGMPMembership depending on the IGMP message type. For IGMP Query, the groups list should only be one group.

Returns:

The list of IGMP groups.

addGroup

public boolean addGroup(IGMPGroup group)

Add a multicast group to this IGMP message.

Parameters:

group - the IGMPGroup will be IGMPQuery or IGMPMembership depending on the message type.

Returns:

true if group was valid and added, false otherwise.

serialize

public byte[] serialize()

Serialize this IGMP packet. This will take care of serializing IGMPv3 Queries and IGMPv3 Membership Reports.

Returns:

the serialized IGMP message

deserialize

public IPacket deserialize(byte[] data,
                           int offset,
                           int length)

Deserialize an IGMP message.

Parameters:

data - bytes to deserialize

offset - offset to start deserializing from

length - length of the data to deserialize

Returns:

populated IGMP object

deserializer

public static Deserializer<IGMP> deserializer()

Deserializer function for IPv4 packets.

Returns:

deserializer function

equals

public boolean equals(Object obj)

Overrides:

equals in class BasePacket

hashCode

public int hashCode()

Overrides:

hashCode in class BasePacket