@Override
  public void onException(final Throwable cause, final SocketAddress remoteAddress, final T message) {
    if (LOG.isLoggable(Level.FINEST)) {
      LOG.log(Level.FINEST, "Error sending message " + message + " to " + remoteAddress, cause);
    }
  }
@ Override public void onException ( final Throwable cause , final SocketAddress remoteAddress , final T message ) { if ( LOG . isLoggable ( Level . FINEST ) ) { LOG . log ( Level . FINEST , "Error sending message " + message + " to " + remoteAddress , cause ) ; } }
Called when the sent message to remoteAddress is failed to be transferred.