transfer throughput is below the expected line rate

[saljam]

Transfer throughput is usually well below the expected line rate. This is mainly down to the implementation of SCTP used. This is known and is tracked by upstream SCTP stacks:

https://github.com/sctplab/usrsctp Stack used in most browsers. Tracked in issue 245.

https://github.com/pion/sctp Stack used by our command line client. Tracked in issue 62.

(Not linking to avoid polluting their issues.)

This is a pre-emptive meta-issue to track and measure the performance of SCTP stacks.