Some HPC clusters now promote using [uftp](http://uftp-multicast.sourceforge.net/) to transfer files. Would be nice to support this protocol. See https://www.hpcwire.com/off-the-wire/gcs-centres-sc-asia-data-mover-challenge/ There is a Java client at https://github.com/UNICORE-EU/uftp/tree/master/uftp-client