WifiP2pDirInfo
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public
final
class
WifiP2pDirInfo
extends Object
implements
Parcelable
This object contains the Device Identity Resolution (DIR) Info to check if the device is a
previously paired device.
The device advertises this information in Bluetooth LE advertising packets
and Unsynchronized Service Discovery (USD) frames. The device receiving DIR
Info uses this information to identify that the peer device is a previously paired device.
For Details, refer Wi-Fi Alliance Wi-Fi Direct R2 specification section 3.8.2 Pairing Identity
and section 3.9.2.3.2 Optional Advertising Data Elements.
Summary
Public constructors |
WifiP2pDirInfo(MacAddress macAddress, byte[] nonce, byte[] dirTag)
Constructor for Device Identity Resolution (DIR) Info generated based on the 128 bit Device
Identity key.
|
Inherited methods |
From class
java.lang.Object
Object
|
clone()
Creates and returns a copy of this object.
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boolean
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equals(Object obj)
Indicates whether some other object is "equal to" this one.
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void
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finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
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final
Class<?>
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getClass()
Returns the runtime class of this Object .
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int
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hashCode()
Returns a hash code value for the object.
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final
void
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notify()
Wakes up a single thread that is waiting on this object's
monitor.
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final
void
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notifyAll()
Wakes up all threads that are waiting on this object's monitor.
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String
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toString()
Returns a string representation of the object.
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final
void
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wait(long timeoutMillis, int nanos)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
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final
void
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wait(long timeoutMillis)
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted, or until a
certain amount of real time has elapsed.
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final
void
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wait()
Causes the current thread to wait until it is awakened, typically
by being notified or interrupted.
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From interface
android.os.Parcelable
abstract
int
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describeContents()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation.
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abstract
void
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writeToParcel(Parcel dest, int flags)
Flatten this object in to a Parcel.
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Fields
Public constructors
WifiP2pDirInfo
public WifiP2pDirInfo (MacAddress macAddress,
byte[] nonce,
byte[] dirTag)
Constructor for Device Identity Resolution (DIR) Info generated based on the 128 bit Device
Identity key. For details, refer Wi-Fi Alliance Wi-Fi Direct R2 specification Table 8.
Parameters |
macAddress |
MacAddress : The MAC address of the P2P device interface.
This value cannot be null . |
nonce |
byte : Random number of 8 octets.
This value cannot be null . |
dirTag |
byte : Resolvable identity value of 8 octets derived based on the device MAC address,
device identity key and P2P device MAC address.
Tag = Truncate-64(HMAC-SHA-256(DevIk, "DIR" || P2P Device Address || Nonce))
This value cannot be null . |
Public methods
describeContents
public int describeContents ()
Implement the Parcelable interface
Returns |
int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
getDirTag
public byte[] getDirTag ()
Get the DIR Tag value.
See WifiP2pDirInfo
Returns |
byte[] |
A byte-array of Tag value of size 8 octets.
This value cannot be null . |
getMacAddress
public MacAddress getMacAddress ()
Returns |
MacAddress |
the MAC address of the P2P device interface.
This value cannot be null . |
getNonce
public byte[] getNonce ()
Get the nonce value used to derive DIR Tag.
See WifiP2pDirInfo
Returns |
byte[] |
A byte-array of random number of size 8 octets.
This value cannot be null . |
toString
public String toString ()
Generates a string of all the defined elements.
Returns |
String |
a compiled string representing all elements |
writeToParcel
public void writeToParcel (Parcel dest,
int flags)
Implement the Parcelable interface
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-01-23 UTC.
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