hello_grpc

gRPC's four kinds of service method in Go

gRPC service method	Request	Response	Example
Unary	Single	Single	Greeting
Server-side streaming	Single	Stream	File downloading
Client-side streaming	Stream	Single	File uploading
Bidirectional streaming	Stream	Stream	Shouting each other

1. Unary RPC

• Client: Single request
• Server: Single response

example - Greeting

2. Server-side streaming RPC

• Client: Single request
• Server: Stream response

example - Downloading data

3. Client-side streaming RPC

• Client: Stream request
• Server: Single response

example - Uploading file

4. Bidirectional streaming RPC

• Client: Stream request
• Server: Stream request

example - Shouting each other

Etc.

Appendix 1 - Tracing

example - Trace

Appendix 2 - Secure gRPC with TLS

• Client: Secured ingle request
• Server: Secured single response

example - TLS

Prerequisites

1. Download Protocol Buffer and locate it in $GOPATH
2. Install protoc-gen-go that is a plugin for the Google protocol buffer compiler to generate Go code.

go get -u github.com/golang/protobuf/protoc-gen-go