ConnectionEventListener (j60870 1.7.2 API)

All Superinterfaces:

java.util.EventListener
```
public interface ConnectionEventListener
extends java.util.EventListener
```
The listener interface for receiving incoming ASDUs and connection closed events. The class that is interested in incoming ASDUs implements this interface. The object of that class is registered as a listener through the ClientConnectionBuilder.setConnectionEventListener(ConnectionEventListener) or returned by ServerEventListener.connectionIndication(Connection). Incoming ASDUs are queued so that newASdu(Connection connection, ASdu) is never called simultaneously for the same connection.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`connectionClosed(Connection connection, java.io.IOException cause)`	Invoked when an IOException occurred while listening for incoming ASDUs.
`void`	`dataTransferStateChanged(Connection connection, boolean stopped)`	Informs when the state of data transfer changed.
`void`	`newASdu(Connection connection, ASdu aSdu)`	Invoked when a new ASDU arrives.

- Method Detail
  - newASdu
```
void newASdu(Connection connection,
             ASdu aSdu)
```
    Invoked when a new ASDU arrives.
    
    Parameters:
    
    aSdu - the ASDU that arrived.
  - connectionClosed
```
void connectionClosed(Connection connection,
                      java.io.IOException cause)
```
    Invoked when an IOException occurred while listening for incoming ASDUs. An IOException implies that the Connection that feeds this listener was automatically closed and can no longer be used to send commands or receive ASDUs.
    
    Parameters:
    
    cause - the exception that occurred.
  - dataTransferStateChanged
```
void dataTransferStateChanged(Connection connection,
                              boolean stopped)
```
    Informs when the state of data transfer changed.
    
    Parameters:
    
    stopped - true if data transfer stopped, false if data transfer started