ListenCallback (Apache Tomcat 11.0.23 API Documentation)
Description: declaration: package: org.apache.catalina.tribes.io, interface: ListenCallback

# Interface ListenCallback

All Known Implementing Classes:
  `NioReceiver, ReceiverBase`

public interface ListenCallback
Internal interface, similar to the MessageListener but used at the IO base The listen callback interface is used by the replication system when data has been received. The interface does not care about objects and marshalling and just passes the bytes straight through.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `messageDataReceived(ChannelMessage data)`
  This method is invoked on the callback object to notify it that new data has been received from one of the cluster nodes.

- ## Method Details

  - ### messageDataReceived

    void messageDataReceived(ChannelMessage data)
    This method is invoked on the callback object to notify it that new data has been received from one of the cluster nodes.
    Parameters:
      `data` - - the message bytes received from the cluster/replication system