Manages reconnection period and transient fault response for PeriodicBatchingSink. During normal operation an object of this type will simply echo the configured batch transmission period. When availabilty fluctuates, the class tracks the number of failed attempts, each time increasing the interval before reconnection is attempted (up to a set maximum) and at predefined points indicating that either the current batch, or entire waiting queue, should be dropped. This Serves two purposes - first, a loaded receiver may need a temporary reduction in traffic while coming back online. Second, the sender needs to account for both bad batches (the first fault response) and also overproduction (the second, queue-dropping response). In combination these should provide a reasonable delivery effort but ultimately protect the sender from memory exhaustion.