Module org.pcap4j.core

Package org.pcap4j.packet

Class Dot11ProbeRequestPacket.Dot11ProbeRequestHeader

java.lang.Object

org.pcap4j.packet.AbstractPacket.AbstractHeader

org.pcap4j.packet.Dot11ManagementPacket.Dot11ManagementHeader

org.pcap4j.packet.Dot11ProbeRequestPacket.Dot11ProbeRequestHeader

All Implemented Interfaces:

Serializable, Packet.Header

Enclosing class:

Dot11ProbeRequestPacket

public static final class Dot11ProbeRequestPacket.Dot11ProbeRequestHeader
extends Dot11ManagementPacket.Dot11ManagementHeader

Header of IEEE802.11 Probe Request

  0                             15
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |         Frame Control         |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |         Duration              |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                               |
 |          Address1             |
 |                               |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                               |
 |          Address2             |
 |                               |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                               |
 |          Address3             |
 |                               |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |       Sequence Control        |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |         HT Control            |
 |                               |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                               |
 |          Frame Body           |
 |                               |
 

Frame Body

1	SSID	If dot11MeshActivated is true, the SSID element is the wildcard value.
2	Supported rates
3	Request information	The Request element is optionally present if dot11MultiDomainCapabilityActivated is true.
4	Extended Supported Rates	The Extended Supported Rates element is present if there are more than eight supported rates, and is optionally present otherwise.
5	DSSS Parameter Set	The DSSS Parameter Set element is present within Probe Request frames generated by STAs using Clause 16, Clause 17, or Clause 19 PHYs if dot11RadioMeasurementActivated is true. The DSSS Parameter Set element is present within Probe Request frames generated by STAs using a Clause 20 PHY in the 2.4 GHz band if dot11RadioMeasurementActivated is true. The DSSS Parameter Set element is optionally present within Probe Request frames generated by STAs using Clause 16, Clause 17, or Clause 19 PHYs if dot11RadioMeasurementActivated is false. The DSSS Parameter Set element is optionally present within Probe Request frames generated by STAs using a Clause 20 PHY in the 2.4 GHz band if dot11RadioMeasurementActivated is false.
6	Supported Operating Classes	The Supported Operating Classes element is present if dot11ExtendedChannelSwitchActivated is true.
7	HT Capabilities	The HT Capabilities element is present when dot11HighThroughputOptionImplemented attribute is true.
8	20/40 BSS Coexistence	The 20/40 BSS Coexistence element is optionally present when the dot112040BSSCoexistenceManagementSupport attribute is true.
9	Extended Capabilities	The Extended Capabilities element is optionally present if any of the fields in this element are nonzero.
10	SSID List	The SSID List element is optionally present if dot11MgmtOptionSSIDListActivated is true.
11	Channel Usage	The Channel Usage element is optionally present if dot11MgmtOptionChannelUsageActivated is true.
12	Interworking	The Interworking element is present if dot11InterworkingServiceActivated is true.
13	Mesh ID	The Mesh ID element is present if dot11MeshActivated is true.
Last	Vendor Specific	One or more vendor-specific elements are optionally present. These elements follow all other elements.

Since:

pcap4j 1.7.0

See Also:

• IEEE802.11
• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private final Dot11ChannelUsageElement	channelUsage
private final Dot11DsssParameterSetElement	dsssParameterSet
private final Dot11ExtendedCapabilitiesElement	extendedCapabilities
private final Dot11ExtendedSupportedRatesElement	extendedSupportedRates
private final Dot11HTCapabilitiesElement	htCapabilities
private final Dot11InterworkingElement	interworking
private final Dot11MeshIdElement	meshId
private final Dot11RequestElement	request
private static final long	serialVersionUID
private final Dot11SsidElement	ssid
private final Dot11SsidListElement	ssidList
private final Dot11SupportedOperatingClassesElement	supportedOperatingClasses
private final Dot11SupportedRatesElement	supportedRates
private final Dot112040BssCoexistenceElement	twentyFortyBssCoexistence
private final List<Dot11VendorSpecificElement>	vendorSpecificElements

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Dot11ProbeRequestHeader(byte[] rawData, int offset, int length)
private	Dot11ProbeRequestHeader(Dot11ProbeRequestPacket.Builder builder)

Method Summary

Modifier and Type	Method	Description
protected String	buildString()	This method builds the value toString() will return.
protected int	calcHashCode()	This method builds the value hashCode() will return using the byte array getRawData() returns.
int	calcLength()	This method calculates the value length() will return by adding up the lengths of byte arrays in the list getRawFields() returns.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one using return values of getRawData().
Dot112040BssCoexistenceElement	get2040BssCoexistence()
Dot11ChannelUsageElement	getChannelUsage()
Dot11DsssParameterSetElement	getDsssParameterSet()
Dot11ExtendedCapabilitiesElement	getExtendedCapabilities()
Dot11ExtendedSupportedRatesElement	getExtendedSupportedRates()
protected String	getHeaderName()
Dot11HTCapabilitiesElement	getHtCapabilities()
Dot11InterworkingElement	getInterworking()
Dot11MeshIdElement	getMeshId()
protected List<byte[]>	getRawFields()	Returns a list of byte arrays which represents this header's fields.
Dot11RequestElement	getRequest()
Dot11SsidElement	getSsid()
Dot11SsidListElement	getSsidList()
Dot11SupportedOperatingClassesElement	getSupportedOperatingClasses()
Dot11SupportedRatesElement	getSupportedRates()
List<Dot11VendorSpecificElement>	getVendorSpecificElements()

Methods inherited from class org.pcap4j.packet.Dot11ManagementPacket.Dot11ManagementHeader

getAddress1, getAddress2, getAddress3, getDuration, getDurationAsInt, getFrameControl, getHtControl, getSequenceControl

Methods inherited from class org.pcap4j.packet.AbstractPacket.AbstractHeader

buildHexString, buildRawData, getRawData, hashCode, length, toHexString, toString

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

ssid

private final Dot11SsidElement ssid

supportedRates

private final Dot11SupportedRatesElement supportedRates

request

private final Dot11RequestElement request

extendedSupportedRates

private final Dot11ExtendedSupportedRatesElement extendedSupportedRates

dsssParameterSet

private final Dot11DsssParameterSetElement dsssParameterSet

supportedOperatingClasses

private final Dot11SupportedOperatingClassesElement supportedOperatingClasses

htCapabilities

private final Dot11HTCapabilitiesElement htCapabilities

twentyFortyBssCoexistence

private final Dot112040BssCoexistenceElement twentyFortyBssCoexistence

extendedCapabilities

private final Dot11ExtendedCapabilitiesElement extendedCapabilities

ssidList

private final Dot11SsidListElement ssidList

channelUsage

private final Dot11ChannelUsageElement channelUsage

interworking

private final Dot11InterworkingElement interworking

meshId

private final Dot11MeshIdElement meshId

vendorSpecificElements

private final List<Dot11VendorSpecificElement> vendorSpecificElements

Constructor Details

Dot11ProbeRequestHeader

private Dot11ProbeRequestHeader(byte[] rawData,
 int offset,
 int length)
                         throws IllegalRawDataException

Throws:

IllegalRawDataException

Dot11ProbeRequestHeader

private Dot11ProbeRequestHeader(Dot11ProbeRequestPacket.Builder builder)

Method Details

getSsid

public Dot11SsidElement getSsid()

Returns:

ssid. May be null.

getSupportedRates

public Dot11SupportedRatesElement getSupportedRates()

Returns:

supportedRates. May be null.

getRequest

public Dot11RequestElement getRequest()

Returns:

request. May be null.

getExtendedSupportedRates

public Dot11ExtendedSupportedRatesElement getExtendedSupportedRates()

Returns:

extendedSupportedRates. May be null.

getDsssParameterSet

public Dot11DsssParameterSetElement getDsssParameterSet()

Returns:

dsssParameterSet. May be null.

getSupportedOperatingClasses

public Dot11SupportedOperatingClassesElement getSupportedOperatingClasses()

Returns:

supportedOperatingClasses. May be null.

getHtCapabilities

public Dot11HTCapabilitiesElement getHtCapabilities()

Returns:

htCapabilities. May be null.

get2040BssCoexistence

public Dot112040BssCoexistenceElement get2040BssCoexistence()

Returns:

twentyFortyBssCoexistence. May be null.

getExtendedCapabilities

public Dot11ExtendedCapabilitiesElement getExtendedCapabilities()

Returns:

extendedCapabilities. May be null.

getSsidList

public Dot11SsidListElement getSsidList()

Returns:

ssidList. May be null.

getChannelUsage

public Dot11ChannelUsageElement getChannelUsage()

Returns:

channelUsage. May be null.

getInterworking

public Dot11InterworkingElement getInterworking()

Returns:

interworking. May be null.

getMeshId

public Dot11MeshIdElement getMeshId()

Returns:

meshId. May be null.

getVendorSpecificElements

public List<Dot11VendorSpecificElement> getVendorSpecificElements()

Returns:

vendorSpecificElements

getRawFields

protected List<byte[]> getRawFields()

Description copied from class: AbstractPacket.AbstractHeader

Returns a list of byte arrays which represents this header's fields. This method is called by calcLength() and buildRawData().

Overrides:

getRawFields in class Dot11ManagementPacket.Dot11ManagementHeader

Returns:

a list of byte arrays which represents this header's fields

calcLength

public int calcLength()

Description copied from class: AbstractPacket.AbstractHeader

This method calculates the value length() will return by adding up the lengths of byte arrays in the list getRawFields() returns.

Overrides:

calcLength in class Dot11ManagementPacket.Dot11ManagementHeader

Returns:

a calculated length

buildString

protected String buildString()

Description copied from class: AbstractPacket.AbstractHeader

This method builds the value toString() will return.

Overrides:

buildString in class Dot11ManagementPacket.Dot11ManagementHeader

Returns:

a string representation of this object

getHeaderName

protected String getHeaderName()

Specified by:

getHeaderName in class Dot11ManagementPacket.Dot11ManagementHeader

Returns:

the header name.

calcHashCode

protected int calcHashCode()

Description copied from class: AbstractPacket.AbstractHeader

This method builds the value hashCode() will return using the byte array getRawData() returns. This method may be better to be overridden for performance reason.

Overrides:

calcHashCode in class Dot11ManagementPacket.Dot11ManagementHeader

Returns:

a calculated hash code value for the object

equals

public boolean equals(Object obj)

Description copied from class: AbstractPacket.AbstractHeader

Indicates whether some other object is "equal to" this one using return values of getRawData(). This method should be overridden so that it does more strict comparisons more efficiently.

Overrides:

equals in class Dot11ManagementPacket.Dot11ManagementHeader