gRPC Hello-world

Prerequisite

Homebrew install javascript-protoc

brew install protoc-gen-grpc-web

Run in docker

Build the images

docker-compose build

Run the server via docker

docker-compose up

Run the front-end

npm run start

Run in terminal

1. Run the NodeJS gRPC Service. This listens at port :9090.

node server.js

2. Run the Envoy proxy. The envoy.yaml file configures Envoy to listen to browser requests at port :8080, and forward them to port :9090 (see above).

docker run -d -v "$(pwd)"/envoy.yaml:/etc/envoy/envoy.yaml:ro \ 
   -p 8080:8080 -p 9901:9901 envoyproxy/envoy:v1.27-latest

3. Run the simple Web Server. This hosts the static file index.html and dist/main.js we generated earlier.

npx http-server -p 8081

Reference

More info: https://github.com/grpc/grpc-web/tree/master/net/grpc/gateway/examples/helloworld