golang|linux下golang gRPC配置详解 golang|c

1.安装gRPC运行环境

go get google.golang.org/grpc

这里的grpc通俗来说就说用在代码里的一个类库，后面的例子可以看到。比较坑的是这里可能需要FQ.....
2.安装protoc 这里需要安装proto buffer的编译器。首先在官网下载，如c++版本的protobuf-cpp-3.4.1.tar.gz，解压后进行编译：

./configure make && make install

3.安装protoc-gen-go

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

4.编写proto文件基于protobuf的跨语言的特性，不难想到它自己实现了一套数据类型。这里有一个简单的例子

//testHello.proto syntax = "proto3"; package protos; // The service definition. service Devops { // 定义服务 rpc SayHello (HelloRequest) returns (Response) {} }// The request message containing the user's name. message HelloRequest { string name = 1; }// The response message message HelloReply { string message = 1; }message Response { enum StatusCode { UNDEFINED = 0; SUCCESS = 200; FAILURE = 500; } StatusCode status = 1; HelloReply msg = 2; }

然后在终端自动生成pb.go:

protoc --go_out=plugins=grpc:. testHello.proto

5.编写服务端

package mainconst ( port = ":50051" )type myserver struct{}//这里myserver实现了SayHello func (s *myserver) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.Response, error) { fmt.Print("receive " + in.Name) return &pb.Response{ Status:pb.Response_SUCCESS, Msg:&pb.HelloReply{Message:"receive " + in.Name}, }, nil }func main() { //绑定端口 lis, err := net.Listen("tcp", port) if err != nil{ log.Fatal("fail to listen") }s := grpc.NewServer() pb.RegisterDevopsServer(s, &myserver{}) s.Serve(lis) }

6.编写客户端

package mainconst ( address = "localhost:50051" )func main(){ //grpc.WithInsecure()指定后才不会报错 conn, err := grpc.Dial(address, grpc.WithInsecure())if err != nil{ log.Fatal("error....", err) } c := pb.NewDevopsClient(conn) res, _ := c.SayHello(context.Background(), &pb.HelloRequest{"eeee"})fmt.Print(res) }

WithInsecure returns a DialOption which disables transport security for this ClientConn.
Note that transport security is required unless WithInsecure is set.

WithInsecure返回一个DialOption，它在传输过程中不保证安全。除非设置WithInsecure，否则grpc.Dial必须指定安全选项。
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