Remote log mocking

Using socket server and client in Nim to mimick behavior of a remote log for data sync.

See https://notes.status.im/Rwh-18AdSgKAkhfwfBE-OA# for current sketch. More full spec to come.

Interfaces

A server represents a remote log. A client is an endpoint.

We need something to represent storage as well.

TODO: Break down roles into individual actors as scripts.

Node

Represents an endpoint, like a data sync node. Multiple actors.

Outside of using transport to send "live" messages (outside of scope here), it also uploads them to CAS and NS. Flow looks different for sending node and reciving node.

Sending node flow:

CAS Update
NS Update

Receiving node flow:

NS fetch
CAS fetch

Details to come.

Name system (NS)

E.g. DNS/ENS/Feeds. Fixed name for mutable resoures.

Supports which operations:

Update name with data => Ok/Error
Fetch name => data

Content-addressed storage (CAS)

Request/response interface for immutable data.

Supports two operations:

Upload data => id
Fetch id => data