CDP and OCSP URIs for a one or multiple certification authorities
can be added via the VICI interface. swanctl allows to read
definitions from a new authorities section.
In addition that it may reduce memory usage and improve performance for large
responses, it returns immediate results. This is important for longer lasting
commands, such as initiate/terminate, where immediate log feedback is preferable
when interactively calling such commands.
While we currently have no need for messages larger than 65KB, we should design
the protocol to be future-proof, as we plan to keep at least to lowest protocol
layer stable.
To avoid any allocation issues, we currently keep the message size limit at
512KB.