基于VS2022在Windows上首次尝试开发C++ gRPC服务端和客户端的详细步骤

#include <grpcpp/grpcpp.h>
#include "protos/greet.grpc.pb.h"

class GreeterServiceImpl final : public Greeter::Service {
  grpc::Status SayHello(grpc::ServerContext* context, 
                       const HelloRequest* request, 
                       HelloReply* reply) override {
    reply->set_message("Hello " + request->name());
    return grpc::Status::OK;
  }
};

void RunServer() {
  std::string server_address("0.0.0.0:50051");
  GreeterServiceImpl service;
  
  grpc::ServerBuilder builder;
  builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
  builder.RegisterService(&service);
  
  std::unique_ptr<grpc::Server> server(builder.BuildAndStart());
  std::cout << "Server listening on " << server_address << std::endl;
  server->Wait();
}

int main() {
  RunServer();
  return 0;
}

#include <grpcpp/grpcpp.h>
#include "protos/greet.grpc.pb.h"

class GreeterClient {
public:
  GreeterClient(std::shared_ptr<grpc::Channel> channel) 
    : stub_(Greeter::NewStub(channel)) {}
  
  std::string SayHello(const std::string& name) {
    HelloRequest request;
    request.set_name(name);
    
    HelloReply reply;
    grpc::ClientContext context;
    grpc::Status status = stub_->SayHello(&context, request, &reply);
    
    if (status.ok()) return reply.message();
    else return "RPC failed";
  }

private:
  std::unique_ptr<Greeter::Stub> stub_;
};

int main() {
  GreeterClient client(grpc::CreateChannel("localhost:50051", 
                      grpc::InsecureChannelCredentials()));
  std::cout << client.SayHello("World") << std::endl;
  return 0;
}