#gRPC in 3 minutes (C++)

Installation

To install gRPC on your system, follow the instructions here: https://github.com/grpc/grpc/blob/master/INSTALL.

Hello C++ gRPC!

Here's how to build and run the C++ implementation of the Hello World example used in Getting started.

The example code for this and our other examples lives in the grpc-common GitHub repository. Clone this repository to your local machine by running the following command:

$ git clone https://github.com/grpc/grpc-common.git

Change your current directory to grpc-common/cpp/helloworld

$ cd grpc-common/cpp/helloworld/

Generating gRPC code

To generate the client and server side interfaces:

$ make helloworld.grpc.pb.cc helloworld.pb.cc

Which internally invokes the proto-compiler as:

$ protoc -I ../../protos/ --grpc_out=. --plugin=protoc-gen-grpc=grpc_cpp_plugin ../../protos/helloworld.proto
$ protoc -I ../../protos/ --cpp_out=. ../../protos/helloworld.proto

Client and server implementations

The client implementation is at greeter_client.cc.

The server implementation is at greeter_server.cc.

Try it!

Build client and server:

$ make

Run the server, which will listen on port 50051:

$ ./greeter_server

Run the client (in a different terminal):

$ ./greeter_client

If things go smoothly, you will see the "Greeter received: Hello world" in the client side output.

Tutorial

You can find a more detailed tutorial in gRPC Basics: C++