jergoo / go-grpc-tutorial

A simple tutorial about Golang gRPC.

Hi there 👋

go-grpc-tutorial's Issues

hello_trace项目，页面仅显示了h1标题，table标签为空白

jergoo你好，上次的外网访问问题我已经解决。

但是，有新的问题 :(

目前我使用仓库里的hello_trace项目代码运行，能够访问到页面，
但是仅显示了h1标题（/debug/events、/debug/requests），具体的trace内容都不显示，直接空白的table标签。

请问是什么原因呢，谢谢！

---

网页样子如下（就是标题以下都是空白）：

/debug/requests

hello_http_2不成功

运行hello_http_2不成功，另外hello_http怎么用？
一直报错
2017/08/09 14:27:13 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:13 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:13 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.
2017/08/09 14:27:14 transport: http2Client.notifyError got notified that the client transport was broken unexpected EOF.

hello_http_2: {"error":"transport is closing","code":14}

1. hello_http_2: I use http instead of https ,
codes are like this, and in shell:

curl -X POST -k http://127.0.0.1:50051/example/echo -d '{"name": "Jesse Yan"}'

but have problems :

{"error":"transport is closing","code":14}

// httpdemo/server/main.go
package main

import (
	"crypto/tls"
	"io/ioutil"
	"net"
	"net/http"
	"strings"
	"github.com/grpc-ecosystem/grpc-gateway/runtime"
	pb "proto/bi/service/httpsdemo"
	"golang.org/x/net/context"
	"golang.org/x/net/http2"
	"google.golang.org/grpc"
	"google.golang.org/grpc/grpclog"
)

// 定义helloHTTPService并实现约定的接口
type helloHTTPService struct{}

// HelloHTTPService Hello HTTP服务
var HelloHTTPService = helloHTTPService{}

// SayHello 实现Hello服务接口
func (h helloHTTPService) SayHello(ctx context.Context, in *pb.HelloHTTPRequest) (*pb.HelloHTTPResponse, error) {
	resp := new(pb.HelloHTTPResponse)
	resp.Message = "Hello " + in.Name + "."

	return resp, nil
}

func main() {
	endpoint := "127.0.0.1:50051"
	conn, err := net.Listen("tcp", endpoint)
	if err != nil {
		grpclog.Fatalf("TCP Listen err:%v\n", err)
	}

	// grpc server
	grpcServer := grpc.NewServer()
	pb.RegisterHelloHTTPServer(grpcServer, HelloHTTPService)

	// gw server
	ctx := context.Background()
	dopts := []grpc.DialOption{grpc.WithInsecure()}
	gwmux := runtime.NewServeMux()
	if err = pb.RegisterHelloHTTPHandlerFromEndpoint(ctx, gwmux, endpoint, dopts); err != nil {
		grpclog.Fatalf("Failed to register gw server: %v\n", err)
	}

	// http服务
	mux := http.NewServeMux()
	mux.Handle("/", gwmux)

	httpServer := &http.Server{
		Addr:      endpoint,
		Handler:   grpcHandlerFunc(grpcServer, mux),
		//TLSConfig: getTLSConfig(),
	}

	grpclog.Infof("gRPC and https listen on: %s\n", endpoint)

	//if err = srv.Serve(tls.NewListener(conn, srv.TLSConfig)); err != nil {
	if err = httpServer.Serve(conn); err != nil {
		grpclog.Fatal("ListenAndServe: ", err)
	}

	return
}

// grpcHandlerFunc returns an http.Handler that delegates to grpcServer on incoming gRPC
// connections or otherHandler otherwise. Copied from cockroachdb.
func grpcHandlerFunc(grpcServer *grpc.Server, otherHandler http.Handler) http.Handler {
	if otherHandler == nil {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			grpcServer.ServeHTTP(w, r)
		})
	}
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if r.ProtoMajor == 2 && strings.Contains(r.Header.Get("Content-Type"), "application/grpc") {
			grpcServer.ServeHTTP(w, r)
		} else {
			otherHandler.ServeHTTP(w, r)
		}
	})
}

2. I also got problems:

go run main.go
FATAL: 2018/03/20 16:26:09 rpc error: code = Unavailable desc = transport is closing

when I request RPC in rpc_client like this：

// httpdemo/client/main.go
package main

import (
	pb "github.com/jergoo/go-grpc-example/proto/hello_http" // 引入proto包

	"golang.org/x/net/context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/grpclog"
)

const (
	// Address gRPC服务地址
	Address = "127.0.0.1:50052"
)

func main() {
	// TLS连接
	//creds, err := credentials.NewClientTLSFromFile("../keys/server.pem", "server name")
	//if err != nil {
	//	grpclog.Fatalf("Failed to create TLS credentials %v", err)
	//}
	//conn, err := grpc.Dial(Address, grpc.WithTransportCredentials(creds))
	conn, err := grpc.Dial(Address, grpc.WithInsecure())

	if err != nil {
		grpclog.Fatalln(err)
	}

	defer conn.Close()

	// 初始化客户端
	c := pb.NewHelloHTTPClient(conn)

	// 调用方法
	reqBody := new(pb.HelloHTTPRequest)
	reqBody.Name = "Jesse Yan"
	r, err := c.SayHello(context.Background(), reqBody)

	if err != nil {
		grpclog.Fatalln(err)
	}

	grpclog.Println(r.Message)
}

// OR: curl -X POST -k https://localhost:50052/example/echo -d '{"name": "gRPC-HTTP is working!"}'

hello_http_2/server/main.go运行报错

FATAL: 2018/02/28 10:06:14 Failed to create server TLS credentials open ../../keys/server.pem: no such file or directory
请教，那个文件明明在的，运行就是找不到，是为啥??感谢

TLS handshake error

2020/11/10 11:56:03 http: TLS handshake error from 127.0.0.1:54433: remote error: tls: bad certificate
2020/11/10 11:56:04 http: TLS handshake error from 127.0.0.1:54434: remote error: tls: bad certificate
2020/11/10 11:56:06 http: TLS handshake error from 127.0.0.1:54435: remote error: tls: bad certificate

hello 范例中俩个问题

1.server 中 SayHello 绑定的struct 为啥是 T，而不是 *T ？
2.grpclog.Pringln() 不会在控制台输出内容，你的怎么输出的 ？我是自己加了fmt 的方法才打了出来，我以为是我自己哪儿复制错了呢。

hello_trace项目，物理机如何访问虚拟机debug页面？

您好，

我在SF上按照 https://segmentfault.com/a/1190000008087436 做或使用 hello_trace 中的代码，

虽然 server、client都能够运行，但只能通过虚拟机本地curl访问127.0.0.1:50051/debug/events，

目前我是物理机是windows，虚拟是linux的方式，想要通过物理机访问x.x.x.x:50051/debug/events，

并且也修改了http.ListenAndServe为go http.ListenAndServe("0.0.0.0:50051", nil)。

但是依旧无法访问，
请问应该如何编写或修改什么配置，才能达到物理机能访问看到虚拟机的debug页面呢？

谢谢。

照你代码写的，导入你github的hello.pb.go是ok的，我本地的却不可以呢，两者一模一样的啊

// 注册HelloService
pb.RegisterHelloServer(s, HelloService)

Cannot use HelloService (type helloService) as type HelloServer less...

##############################################################
D:\GoWorkSpace\src\go-grpc-example\hello>go run server\main.go

google.golang.org/grpc/transport

....\google.golang.org\grpc\transport\http_util.go:465: f.fr.SetReuseFrames und
efined (type *http2.Framer has no field or method SetReuseFrames)