grpc-async(peer)

Example code of asynchronous communication using gRPC with goroutine

go get google.golang.org/grpc

Multiple request

Client sends multiple messages asynchronously with go routine. This is useful when client don't need to wait response.

Atomic counter

Client send a request asynchronously without immediate response. Client send another request to increase atomic counter on server side. When the counter has value of 2, original request is going to get a response.

Relay server

It would be useful when a program has both client side and server side. An example of this is relay server. It waits for cilent's request and relay this to the different server. Picture below shows the communication process.