This example is originally found in this repo. Since this example is being run in the BoxBox environment, client (prvi/client.exs) is connecting to boxbox:50051. In general, it can be replaced, e.g with localhost:50051.

1. Install deps and compile

$ mix do deps.get, compile

2. Run the server

$ mix grpc.server

3. Run the client script

$ mix run priv/client.exs

1. Modify the proto priv/protos/helloworld.proto
2. Install protoc here
3. Install protoc-gen-elixir

mix escript.install hex protobuf

4. Generate the code:

$ protoc -I priv/protos --elixir_out=plugins=grpc:./lib/ priv/protos/helloworld.proto

Refer to protobuf-elixir for more information.

Change the config to:

config :grpc, start_server: true