bft

To improve the security, it's good to start eliminating dependencies. Domains are a good start point.

Even though this is just a sample application, this kind of error detection might help avoid surprising results if there is a simple typo in configuration. Maybe address in a separate issue? The same also applies to sample/config package.

Originally posted by @sergefdrv in hyperledger-labs/minbft#134

our code still has legacy(Address) at request.go or node.go

fix address to member

This looks good work.

For cross-language support, it would be good to go deep into one language with runtime support, rather than going wide and providing compile-time linking options for many languages.

For example, once C/C++ implementation is done, please:

• provide connectivity options to invoke the API through HTTP/2, WebSockets, RPC etc. so that all other languages, such as