I am unable to use grpc-web wrapped server with normal grpc client?

https://github.com/gustavohenrique/grpc-web-golang-vuejs/tree/master/backend I have this backend server which is successfully communicating with the vue.js client. But i am unable to call the grpc function with the normal grpc client. Is it possible to use grpcweb wrapped server with both browser based app as well as normal backend clients? If yes then how?

Here is the small code which i was trying to connect to it…

package main
import (
	"context"
	"fmt"
	"io"
	"log"
	"time"

	pb "backend/proto"

	"google.golang.org/grpc"
)
func main() {

	fmt.Println("Hello I'm a client")
	conn, err := grpc.Dial("0.0.0.0:9000", grpc.WithInsecure())
	if err != nil {
		log.Fatalf("could not connect: %v", err)
	}
	defer conn.Close()
	c := pb.NewAccountServiceClient(conn)
	doUnary(c)
}
func doUnary(c pb.AccountServiceClient) {
	fmt.Println("do unary from the client")
	req := &pb.User{
		Email:    "hh1212",
		Password: "23123",
	}
	res, err := c.Create(context.Background(), req)
	if err != nil {
		log.Fatalf("error while calling Greet RPC: %v", err)
	}
	
	//log.Printf("Response from Greet: %v", res.GetEmail())
}

[johanbrandhorst]

🤷🏻 you can check out my example repositories and see if they work for you. I’m guessing there’s something going on with your local set up, not much I can help with there.

[johanbrandhorst]

No, that’s not enough. I explained that you need to split the traffic. Your handler is just replying with nothing when the request isn’t a grpc-web request. You need to add `grpcServer.ServeHTTP inside your handler:

    http.HandleFunc("/", func(resp http.ResponseWriter, req *http.Request) {
        if grpc.IsGrpcWebRequest(req) || grpc.IsAcceptableGrpcCorsRequest(req) {
            allowCors(resp, req)
            grpc.ServeHTTP(resp, req)
            return
        }
        grpcServer.ServeHTTP(resp, req)
    })