TLS handshake errors (gRPC requires TLS)

[TinosNitso]

I keep getting the following error from my gRPC server:

2022/07/10 16:42:10 http: TLS handshake error from 172.22.224.1:60652: tls: first record does not look like a TLS handshake

Any chance of TLS being supported in the future? I'm not sure what I'll try next. I've been using grpc-mate from within Docker.