Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Fields](https://developer.android.com/reference/android/system/StructCmsghdr#lfields) \| [Ctors](https://developer.android.com/reference/android/system/StructCmsghdr#pubctors) \| [Inherited Methods](https://developer.android.com/reference/android/system/StructCmsghdr#inhmethods)

# StructCmsghdr

*** ** * ** ***


`
public

final

class
StructCmsghdr
`


`

extends https://developer.android.com/reference/java/lang/Object


`

`


`

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.system.StructCmsghdr |

<br />

*** ** * ** ***

Corresponds to C's `struct cmsghdr`.

## Summary

| ### Fields ||
|---|---|
| ` public final byte[]` | `https://developer.android.com/reference/android/system/StructCmsghdr#cmsg_data` message data sent/received |
| ` public final int` | `https://developer.android.com/reference/android/system/StructCmsghdr#cmsg_level` Originating protocol |
| ` public final int` | `https://developer.android.com/reference/android/system/StructCmsghdr#cmsg_type` Protocol-specific type |

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/android/system/StructCmsghdr#StructCmsghdr(int,%20int,%20byte[])(int cmsg_level, int cmsg_type, byte[] value) ` |
| ` https://developer.android.com/reference/android/system/StructCmsghdr#StructCmsghdr(int,%20int,%20short)(int cmsg_level, int cmsg_type, short value) ` |

| ### Inherited methods |
|---|---|
| From class ` https://developer.android.com/reference/java/lang/Object ` |---|---| | ` https://developer.android.com/reference/java/lang/Object` | ` https://developer.android.com/reference/java/lang/Object#clone()() ` Creates and returns a copy of this object. | | ` boolean` | ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` https://developer.android.com/reference/java/lang/Object#finalize()() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final https://developer.android.com/reference/java/lang/Class<?>` | ` https://developer.android.com/reference/java/lang/Object#getClass()() ` Returns the runtime class of this `Object`. | | ` int` | ` https://developer.android.com/reference/java/lang/Object#hashCode()() ` Returns a hash code value for the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notify()() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notifyAll()() ` Wakes up all threads that are waiting on this object's monitor. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Object#toString()() ` Returns a string representation of the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(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. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long)(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. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait()() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||

## Fields

### cmsg_data

Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public final byte[] cmsg_data
```

message data sent/received

<br />

### cmsg_level

Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public final int cmsg_level
```

Originating protocol

<br />

### cmsg_type

Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public final int cmsg_type
```

Protocol-specific type

<br />

## Public constructors

### StructCmsghdr

Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public StructCmsghdr (int cmsg_level, 
                int cmsg_type, 
                byte[] value)
```

<br />

<br />

| Parameters ||
|---|---|
| `cmsg_level` | `int` <br /> |
| `cmsg_type` | `int` <br /> |
| `value` | `byte`: This value cannot be `null`. <br /> |

### StructCmsghdr

Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public StructCmsghdr (int cmsg_level, 
                int cmsg_type, 
                short value)
```

<br />

<br />

| Parameters ||
|---|---|
| `cmsg_level` | `int` <br /> |
| `cmsg_type` | `int` <br /> |
| `value` | `short` <br /> |