Do you mean this PR? https://github.com/leonoel/missionary/pull/36/files

There was a separate branch, but I can't confirm if this PR is exactly the same.

but as far as I remember, it looks like the same thing

thx!

careful the examples in my latest readme are not tested, it is just a sketch, and they use the secret async branch of RCF

Not yet. This is an interesting problem though, I'd like to provide a generic solution but I want to fully understand the essence of it first