Package org.pcap4j.packet

Class Dot11ExtendedSupportedRatesElement

java.lang.Object

org.pcap4j.packet.Dot11InformationElement

org.pcap4j.packet.Dot11AbstractSupportedRatesElement

org.pcap4j.packet.Dot11ExtendedSupportedRatesElement

All Implemented Interfaces:

java.io.Serializable

public final class Dot11ExtendedSupportedRatesElement
extends Dot11AbstractSupportedRatesElement

IEEE802.11 Extended Supported Rates element

       1         1               1-255
 +----------+----------+-------------------------
 |Element ID|  Length  | Extended Supported Rates
 +----------+----------+-------------------------
 Element ID: 50
 

The Extended Supported Rates element specifies the rates in the OperationalRateSet parameter and zero or more BSS membership selector values that are not carried in the Supported Rates element. The Information field is encoded as 1 to 255 octets where each octet describes a single supported rate or BSS membership selector. Within Beacon, Probe Response, Association Response, Reassociation Response, Mesh Peering Open, and Mesh Peering Confirm management frames, each supported rate contained in the BSSBasicRateSet parameter is encoded as an octet with the MSB (bit 7) set to 1 and bits 6 to 0 are set to the appropriate value. Rates not contained in the BSSBasicRateSet parameter are encoded with the MSB set to 0, and bits 6 to 0 are set to the appropriate value from the valid range. The MSB of each octet in the Extended Supported Rate element in other management frame types is ignored by receiving STAs. Within Beacon, Probe Response, Association Response, Reassociation Response, Mesh Peering Open, and Mesh Peering Confirm management frames, each BSS membership selector contained in the BSSMembershipSelectorSet parameter is encoded as an octet with the MSB (bit 7) set to 1, and bits 6 to 0 are set to the encoded value for the selector.

Since:

pcap4j 1.7.0

Author:

Kaito Yamada

See Also:

IEEE802.11, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Dot11ExtendedSupportedRatesElement.Builder

Nested classes/interfaces inherited from class org.pcap4j.packet.Dot11AbstractSupportedRatesElement

Dot11AbstractSupportedRatesElement.BssMembershipSelector, Dot11AbstractSupportedRatesElement.Datum, Dot11AbstractSupportedRatesElement.Rate

Method Summary

Modifier and Type	Method	Description
Dot11ExtendedSupportedRatesElement.Builder	getBuilder()
java.lang.String	getElementName()
static Dot11ExtendedSupportedRatesElement	newInstance(byte[] rawData, int offset, int length)	A static factory method.

Methods inherited from class org.pcap4j.packet.Dot11AbstractSupportedRatesElement

equals, getBssMembershipSelectors, getRates, getRawData, hashCode, length, toString, toString

Methods inherited from class org.pcap4j.packet.Dot11InformationElement

getElementId, getLength, getLengthAsInt

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

newInstance

public static Dot11ExtendedSupportedRatesElement newInstance(byte[] rawData,
                                                             int offset,
                                                             int length)
                                                      throws IllegalRawDataException

A static factory method. This method validates the arguments by ByteArrays.validateBounds(byte[], int, int), which may throw exceptions undocumented here.

Parameters:

rawData - rawData

offset - offset

length - length

Returns:

a new Dot11ExtendedSupportedRatesElement object.

Throws:

IllegalRawDataException - if parsing the raw data fails.

getBuilder

public Dot11ExtendedSupportedRatesElement.Builder getBuilder()

Specified by:

getBuilder in class Dot11AbstractSupportedRatesElement

Returns:

a new Builder object populated with this object's fields.

getElementName

public java.lang.String getElementName()

Specified by:

getElementName in class Dot11AbstractSupportedRatesElement

Returns:

element name