Basic Go gRPC Server and Client

This is a basic gRPC server and client written in Go. It is based on the gRPC Quickstart and gRPC Basics: Go tutorials.

I have implemented a simple gRPC server and client with the following functionality:

• simple RPC
• server-side streaming RPC
• client-side streaming RPC
• bidirectional streaming RPC

Setting up a gRPC-Go project

1. Create a new directory for your project and cd into it

mkdir go-grpc
cd go-grpc
mkdir client server proto

2. Installing the gRPC Go plugin

go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.28

go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.2

export PATH="$PATH:$(go env GOPATH)/bin"

3. Initialize a Go module

go mod init github.com/your_username/go-grpc

go mod tidy

4. Create the proto file with the required services and messages in the proto directory

5. Generate .pb.go files from the proto file

depending on what path you mention in your greet.proto file, you will either run this -

protoc --go_out=. --go-grpc_out=. proto/greet.proto

OR this -

protoc --go_out=. --go_opt=module=github.com/prasher1421/basic-go-grpc --go-grpc_out=. --go-grpc_opt=module=github.com/prasher1421/go-grpc proto/greet.proto

6. Create the server and client directories and create the main.go files with necessary controllers and services

Running the application

1. Install the dependencies

go mod tidy

2. Run the server

go run server/main.go

3. Run the client

go run client/main.go