Epoll (Netty API Reference (5.0.0.Alpha4))

java.lang.Object
- io.netty5.channel.epoll.Epoll

```
public final class Epoll
extends Object
```
Tells if netty-transport-native-epoll is supported.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`ensureAvailability()`	Ensure that `netty-transport-native-epoll` is available.
`static boolean`	`isAvailable()`	Returns `true` if and only if the `netty-transport-native-epoll` is available.
`static boolean`	`isTcpFastOpenClientSideAvailable()`	Returns `true` if the epoll native transport is both available and supports client-side TCP FastOpen.
`static boolean`	`isTcpFastOpenServerSideAvailable()`	Returns `true` if the epoll native transport is both available and supports server-side TCP FastOpen.
`static Throwable`	`unavailabilityCause()`	Returns the cause of unavailability of `netty-transport-native-epoll`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isAvailable
```
public static boolean isAvailable()
```
    Returns true if and only if the netty-transport-native-epoll is available.
  - ensureAvailability
```
public static void ensureAvailability()
```
    Ensure that netty-transport-native-epoll is available.
    
    Throws:
    
    UnsatisfiedLinkError - if unavailable
  - unavailabilityCause
```
public static Throwable unavailabilityCause()
```
    Returns the cause of unavailability of netty-transport-native-epoll.
    
    Returns:
    
    the cause if unavailable. null if available.
  - isTcpFastOpenClientSideAvailable
```
public static boolean isTcpFastOpenClientSideAvailable()
```
    Returns true if the epoll native transport is both available and supports client-side TCP FastOpen.
    
    Returns:
    
    true if it's possible to use client-side TCP FastOpen via epoll, otherwise false.
  - isTcpFastOpenServerSideAvailable
```
public static boolean isTcpFastOpenServerSideAvailable()
```
    Returns true if the epoll native transport is both available and supports server-side TCP FastOpen.
    
    Returns:
    
    true if it's possible to use server-side TCP FastOpen via epoll, otherwise false.