aeron-driver/src/main/java/io/aeron/driver/RetransmitHandler.java
public void onRetransmitReceived(final int termId, final int termOffset)
    {
        final RetransmitAction action = activeRetransmitsMap.get(termId, termOffset);

        if (null != action && DELAYED == action.state)
        {
            activeRetransmitsMap.remove(termId, termOffset);
            action.cancel();
            // do not go into linger
        }
    }
public void onRetransmitReceived(final int termId, final int termOffset)
    {
        final RetransmitAction action = activeRetransmitsMap.get(termId, termOffset);

        if (null != action && DELAYED == action.state)
        {
            activeRetransmitsMap.remove(termId, termOffset);
            action.cancel();
            // do not go into linger
        }
    }
Called to indicate a retransmission is received that may obviate the need to send one ourselves.
<p>
NOTE: Currently only called from unit tests. Would be used for retransmitting from receivers for NAK suppression.

@param termId     of the data
@param termOffset of the data