NetworkServerCallback (Hekate 4.0.0)

```
public interface NetworkServerCallback
```
Lifecycle callback for NetworkServer.

See Also:

NetworkServer.start(InetSocketAddress, NetworkServerCallback)

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default NetworkServerFailure.Resolution`	`onFailure(NetworkServer server, NetworkServerFailure failure)`	Called if there is an error either when the server is staring or already started.
`default void`	`onStart(NetworkServer server)`	Called if server `started` successfully.
`default void`	`onStop(NetworkServer server)`	Called if server `stopped`.

- Method Detail
  - onStart
```
default void onStart(NetworkServer server)
```
    Called if server started successfully.
    
    Parameters:
    
    server - Server.
  - onStop
```
default void onStop(NetworkServer server)
```
    Called if server stopped.
    
    Parameters:
    
    server - Server.
  - onFailure
```
default NetworkServerFailure.Resolution onFailure(NetworkServer server,
                                                  NetworkServerFailure failure)
```
    Called if there is an error either when the server is staring or already started.
    Implementations of this method can provide a custom failover policy. For more details please see "Server failover" section of NetworkServer javadoc.
    
    Parameters:
    
    server - Server.
    
    failure - Information about the cause of this failure and failover context.
    
    Returns:
    
    Failure resolution. Returning null has the same effect as returning NetworkServerFailure.fail().