[ibr-dtn] IBR-DTN performance with big files and small bundle-fragments

Hi,

I want to transfer 500MB, using proactive fragmentation of 100K bundle_size.

I have changed the parameters in the configuration file of the sender as below:

option limit_payload 100K option fragmentation yes option limit_lifetime 60000 option bundles_in_transit 1000

So, with above options, I would expect around 5000 bundles of 100K stored in the temporary folder of my device. Observing the logs, I could see in the daemon of the sender 4207 'TransferCompletedEvent' and 4212 'BundleReceivedEvent' in the daemon of the receiver. After some time that the experiment was running smoothly, 'TransferAbortedEvent' were triggered at the sender and 'BundleExpiredEvent's were triggered in the receiver. As a result, the already stored bundles in the receiver side started to being deleted.

Any guess of why there is such a behavior? The option 'limit_lifetime' is expressed in secs, correct? Can you explain what is defined with option bundles_in_transit?

Thanks, Theodoros