[izacus]

Sure, but anything you're trying to transport between languages which don't even agree on endianess will end up like this.

Dumping a struct on a wire is just a wishful dream that turns into a nightmare as soon as you need to send that to a service written in another language or running on another architecture.

Don't get me wrong - there's plenty of insanity in protobufs. But trying to cover the same use-case will not create a simple protocol.

[grandmczeb]

Cap'n proto didn't "end up like this" and works across languages.

[heavenlyblue]

Cap’n’proto isn’t well supported apart from C or Rust.

Python library is an absolute nightmare. Their tests used to catch Exception, and what they ended up testing was basically whether their test try to access nonexistant attributes.

The issue is that capnproto is relatively more complex, and as such is harder to implement well.