MadMode: spendr: toward an rchain gRPC client in rust using tokio and async / await

spendr: toward an rchain gRPC client in rust using tokio and async / await

Inspired by mention of a gRPC client and server library in Tokio alpha release with async & await, I tried building an rchain wallet client in rust.

A couple hours later, I had the hello-world client from tower-grpc adapted to talk to the shiny new 0.9.12 release of rnode:

~/projects/spendr$ cargo run
   Compiling spendr v0.1.0 (/home/connolly/projects/spendr)
    Finished dev [unoptimized + debuginfo] target(s) in 3.00s
     Running `target/debug/spendr`
RESPONSE = Response { metadata: MetadataMap { headers: {"content-type": "application/grpc", "grpc-encoding": "identity", "grpc-accept-encoding": "gzip"} }, message: Streaming }

But that client code doesn't use the yummy new async / await stuff. It doesn't look like async / await has made it up to the gRPC level yet. I think I mis-read the blog post; I think it was just saying that tokio has a gRPC client and server library.