TwclWiFiSniffer Class

The component allows your application to capture raw packets from your WiFi adapter.

TComponent
wclWiFi.TwclWiFiSniffer

type
 TwclWiFiSniffer = class(TComponent)
 end;

Constructors

	Name	Description
	Create(TComponent)	Creates a new component.
	Destroy	Frees the component.

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Properties

	Name	Description
	Active	Gets the sniffer's state.
	AfterOpen	The event fires after the Sniffer was opened with success.
	BeforeClose	The event fires before the Sniffer will be closed.
	DoNotChangeMode	Gets and sets the value controlled how the Sniffer will work with the WiFi hardware interface.
	IfaceId	Gets the WiFi Interface ID.
	Mode	Gets the current WiFi interface mode.

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Methods

	Name	Description
	Close	Stops capturing WiFi frames and closes the sniffer.
	DoAfterOpen	Fires the `AfterOpen` event.
	DoBeforeClose	Fires the `BeforeClose` event.
	DoFrameReceived(TwclWiFiSnifferFrameMetaData,Pointer,Cardinal)	Fires the `OnFrameReceived` event.
	DoRawFrameReceived(Pointer,Cardinal)	Fires the `OnRawFrameReceived` event.
	GetChannel(Cardinal)	Get the current channel.
	GetMacAddr(Int64)	Gets the WiFi adapter current MAC address.
	GetPhy(TwclWiFiSnifferPhy)	Gets the current adapter's PHY.
	Open(TGUID)	Opens the sniffer and starts capturing WiFI frames.
	SetChannel(Cardinal)	Sets the current channel.
	SetPhy(TwclWiFiSnifferPhy)	Sets the current PHY.

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Events

	Name	Description
	OnFrameReceived	The event fires when a new frame received.
	OnRawFrameReceived	The event fires when a new frame received.

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Remarks

Please note, that not all WiFi adapters can capture the raw packets. To be able to do that your adapter must support Monitor Mode.

The component requires Microsoft Network Monitor 3.4 filter driver to be installed on your system. You can download and install the Microsoft Network Monitor 3.4 by the following link: https://www.microsoft.com/en-us/download/details.aspx?id=4865

NOTE: The component is not thread-safe.

Reference

wclWiFi