SubscribeDiscoverySession

Kotlin |Java

open class SubscribeDiscoverySession : DiscoverySession

kotlin.Any
↳	android.net.wifi.aware.DiscoverySession
	↳	android.net.wifi.aware.SubscribeDiscoverySession

A class representing a Aware subscribe session. Created when WifiAwareSession.subscribe(SubscribeConfig, is called and a discovery session is created and returned in DiscoverySessionCallback.onSubscribeStarted(SubscribeDiscoverySession). See baseline functionality of all discovery sessions in DiscoverySession. This object allows updating an existing/running subscribe discovery session using updateSubscribe(android.net.wifi.aware.SubscribeConfig).

Summary

Public methods
open Unit	`updateSubscribe(subscribeConfig: SubscribeConfig)` Re-configure the currently active subscribe session.

Inherited functions

From class DiscoverySession

`Unit`	`acceptPairingRequest(requestId: Int, peerHandle: PeerHandle, peerDeviceAlias: String, cipherSuite: Int, password: String?)` Accept and respond to a Wi-Fi Aware Pairing setup request received from peer. This is the response to the `DiscoverySessionCallback.onPairingSetupRequestReceived(PeerHandle, int)` When the Aware Pairing setup is finished, both sides will receive `DiscoverySessionCallback.onPairingSetupSucceeded(PeerHandle, String)`
`Unit`	`close()` Destroy the publish or subscribe session - free any resources, and stop transmitting packets on-air (for an active session) or listening for matches (for a passive session). The session may not be used for any additional operations after its destruction. This operation must be done on a session which is no longer needed. Otherwise system resources will continue to be utilized until the application exits. The only exception is a session for which we received a termination callback, `DiscoverySessionCallback.onSessionTerminated()`.
`NetworkSpecifier!`	`createNetworkSpecifierOpen(peerHandle: PeerHandle)` Create a `android.net.NetworkRequest.Builder#setNetworkSpecifier(NetworkSpecifier)` for an unencrypted WiFi Aware connection (link) to the specified peer. The `android.net.NetworkRequest.Builder#addTransportType(int)` should be set to `android.net.NetworkCapabilities#TRANSPORT_WIFI_AWARE`. This method should be used when setting up a connection with a peer discovered through Aware discovery or communication (in such scenarios the MAC address of the peer is shielded by an opaque peer ID handle). If an Aware connection is needed to a peer discovered using other OOB (out-of-band) mechanism then use the alternative `WifiAwareSession.createNetworkSpecifierOpen(int, byte[])` method - which uses the peer's MAC address. Note: per the Wi-Fi Aware specification the roles are fixed - a Subscriber is an INITIATOR and a Publisher is a RESPONDER. To set up an encrypted link use the `createNetworkSpecifierPassphrase(android.net.wifi.aware.PeerHandle,java.lang.String)` API.
`NetworkSpecifier!`	`createNetworkSpecifierPassphrase(peerHandle: PeerHandle, passphrase: String)` Create a `android.net.NetworkRequest.Builder#setNetworkSpecifier(NetworkSpecifier)` for an encrypted WiFi Aware connection (link) to the specified peer. The `android.net.NetworkRequest.Builder#addTransportType(int)` should be set to `android.net.NetworkCapabilities#TRANSPORT_WIFI_AWARE`. This method should be used when setting up a connection with a peer discovered through Aware discovery or communication (in such scenarios the MAC address of the peer is shielded by an opaque peer ID handle). If an Aware connection is needed to a peer discovered using other OOB (out-of-band) mechanism then use the alternative `WifiAwareSession.createNetworkSpecifierPassphrase(int, byte[], String)` method - which uses the peer's MAC address. Note: per the Wi-Fi Aware specification the roles are fixed - a Subscriber is an INITIATOR and a Publisher is a RESPONDER.
`Unit`	`initiateBootstrappingRequest(peerHandle: PeerHandle, method: Int)` Initiate a Wi-Fi Aware bootstrapping setup request to create a pairing with the target peer. The Aware bootstrapping request should be done in the context of a discovery session - after a publish/subscribe `DiscoverySessionCallback.onServiceDiscovered(ServiceDiscoveryInfo)` event is received. The peer will check if the method can be fulfilled by `AwarePairingConfig.Builder.setBootstrappingMethods(int)` When the Aware Bootstrapping setup finished, both side will receive `DiscoverySessionCallback.onBootstrappingSucceeded(PeerHandle, int)`
`Unit`	`initiatePairingRequest(peerHandle: PeerHandle, peerDeviceAlias: String, cipherSuite: Int, password: String?)` Initiate a Wi-Fi Aware Pairing setup request to create a pairing with the target peer. The Aware pairing request should be done in the context of a discovery session - after a publish/subscribe `DiscoverySessionCallback.onServiceDiscovered(ServiceDiscoveryInfo)` event is received. The peer will get a callback indicating a message was received using `DiscoverySessionCallback.onPairingSetupRequestReceived(PeerHandle, int)`. When the Aware Pairing setup is finished, both sides will receive `DiscoverySessionCallback.onPairingSetupSucceeded(PeerHandle, String)`
`Unit`	`rejectPairingRequest(requestId: Int, peerHandle: PeerHandle)` Reject a Wi-Fi Aware Pairing setup request received from peer. This is the response to the `DiscoverySessionCallback.onPairingSetupRequestReceived(PeerHandle, int)`
`Unit`	`sendMessage(peerHandle: PeerHandle, messageId: Int, message: ByteArray?)` Sends a message to the specified destination. Aware messages are transmitted in the context of a discovery session - executed subsequent to a publish/subscribe `DiscoverySessionCallback.onServiceDiscovered(PeerHandle,` event. Aware messages are not guaranteed delivery. Callbacks on `DiscoverySessionCallback` indicate message was transmitted successfully, `DiscoverySessionCallback.onMessageSendSucceeded(int)`, or transmission failed (possibly after several retries) - `DiscoverySessionCallback.onMessageSendFailed(int)`. The peer will get a callback indicating a message was received using `DiscoverySessionCallback.onMessageReceived(PeerHandle,`.

Public methods

updateSubscribe

Added in API level 26

open fun updateSubscribe(subscribeConfig: SubscribeConfig): Unit

Re-configure the currently active subscribe session. The DiscoverySessionCallback is not replaced - the same listener used at creation is still used. The results of the configuration are returned using DiscoverySessionCallback:

DiscoverySessionCallback.onSessionConfigUpdated(): configuration update succeeded.
DiscoverySessionCallback.onSessionConfigFailed(): configuration update failed. The subscribe discovery session is still running using its previous configuration (i.e. update failure does not terminate the session).

Parameters
`subscribeConfig`	SubscribeConfig: The new discovery subscribe session configuration (`SubscribeConfig`). This value cannot be `null`.