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Callback
open class Callback
The callback which app can use to learn the status changes of SocketKeepalive. See SocketKeepalive.
Summary
| Public methods |
| open Unit |
The keepalive on a TCP socket was stopped because the socket received data.
|
| open Unit |
An error occurred.
|
| open Unit |
The requested keepalive was successfully started.
|
| open Unit |
The keepalive was successfully stopped.
|
Public constructors
Public methods
onDataReceived
open fun onDataReceived(): Unit
The keepalive on a TCP socket was stopped because the socket received data. This is never called for UDP sockets.
onError
open fun onError(error: Int): Unit
An error occurred.
onStarted
open fun onStarted(): Unit
The requested keepalive was successfully started.
onStopped
open fun onStopped(): Unit
The keepalive was successfully stopped.
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Last updated 2025-02-10 UTC.
[null,null,["Last updated 2025-02-10 UTC."],[],[],null,["# SocketKeepalive.Callback\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nCallback\n========\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/net/SocketKeepalive.Callback \"View this page in Java\") \n\n```\nopen class Callback\n```\n\n|---|-------------------------------------------|\n| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) ||\n| ↳ | [android.net.SocketKeepalive.Callback](#) |\n\nThe callback which app can use to learn the status changes of [SocketKeepalive](/reference/kotlin/android/net/SocketKeepalive). See [SocketKeepalive](/reference/kotlin/android/net/SocketKeepalive).\n\nSummary\n-------\n\n| Public constructors ||\n|------------------------------------|---|\n| [Callback](#Callback())`()` \u003cbr /\u003e |\n\n| Public methods ||\n|-----------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------|\n| open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onDataReceived](#onDataReceived())`()` The keepalive on a TCP socket was stopped because the socket received data. |\n| open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onError](#onError(kotlin.Int))`(`error:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` An error occurred. |\n| open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onStarted](#onStarted())`()` The requested keepalive was successfully started. |\n| open [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onStopped](#onStopped())`()` The keepalive was successfully stopped. |\n\nPublic constructors\n-------------------\n\n### Callback\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nCallback()\n```\n\nPublic methods\n--------------\n\n### onDataReceived\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nopen fun onDataReceived(): Unit\n```\n\nThe keepalive on a TCP socket was stopped because the socket received data. This is never called for UDP sockets. \n\n### onError\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nopen fun onError(error: Int): Unit\n```\n\nAn error occurred.\n\n| Parameters ||\n|---------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `error` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html): Value is [android.net.SocketKeepalive#ERROR_INVALID_NETWORK](/reference/kotlin/android/net/SocketKeepalive#ERROR_INVALID_NETWORK:kotlin.Int), [android.net.SocketKeepalive#ERROR_INVALID_IP_ADDRESS](/reference/kotlin/android/net/SocketKeepalive#ERROR_INVALID_IP_ADDRESS:kotlin.Int), [android.net.SocketKeepalive#ERROR_INVALID_PORT](/reference/kotlin/android/net/SocketKeepalive#ERROR_INVALID_PORT:kotlin.Int), [android.net.SocketKeepalive#ERROR_INVALID_LENGTH](/reference/kotlin/android/net/SocketKeepalive#ERROR_INVALID_LENGTH:kotlin.Int), [android.net.SocketKeepalive#ERROR_INVALID_INTERVAL](/reference/kotlin/android/net/SocketKeepalive#ERROR_INVALID_INTERVAL:kotlin.Int), [android.net.SocketKeepalive#ERROR_INVALID_SOCKET](/reference/kotlin/android/net/SocketKeepalive#ERROR_INVALID_SOCKET:kotlin.Int), [android.net.SocketKeepalive#ERROR_SOCKET_NOT_IDLE](/reference/kotlin/android/net/SocketKeepalive#ERROR_SOCKET_NOT_IDLE:kotlin.Int), or android.net.SocketKeepalive.ERROR_NO_SUCH_SLOT |\n\n### onStarted\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nopen fun onStarted(): Unit\n```\n\nThe requested keepalive was successfully started. \n\n### onStopped\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nopen fun onStopped(): Unit\n```\n\nThe keepalive was successfully stopped."]]
