[capnproto] [ANN] mirage/capnp-rpc 0.3 : unikernel support!

[Thomas Leonard]

I’m pleased to announce the release of capnp-rpc 0.3, an OCaml
implementation of the RPC specification:

https://discuss.ocaml.org/t/ann-capnp-rpc-0-3-unikernel-support/945

There is an extended tutorial at
https://github.com/mirage/capnp-rpc/blob/master/README.md

This release adds support for using the library within a MirageOS
<https://mirage.io/> unikernel. A Mirage unikernel is a self-contained VM
that can run on a normal hypervisor, such as Xen. Whereas a traditional VM
typically includes a Linux kernel and a userspace, a Mirage VM is a single
OCaml program. It makes use of OCaml libraries to implement all drivers,
including a Xen virtual network interface driver, a TCP/IP stack, a TLS
stack*, etc. Such unikernels are much simpler than traditional operating
systems and have no legacy API (e.g. no POSIX). They are typically
therefore easier to debug or secure, and are much smaller than normal VMs.

* The low-level crypo primitives are implemented in C, however, to protect
against timing attacks.