transport: http2Server.HandleStreams failed to read frame: read tcp 192.168.56.1:8080->192.168.56.1:29065: wsarecv: An existing connection was forcibly closed by the remote host.

[Nikhil Tathe]

Hi all,
I am building a grpc server client communication on windows.
I am getting error as

transport: http2Server.HandleStreams failed to read frame: read tcp 192.168.56.1:8080->192.168.56.1:29065: wsarecv: An existing connection was forcibly closed by the remote host.

I am not able understand it.
I googled about it but I no luck.

I tried grpc sample code from https://github.com/grpc/grpc-go/tree/master/examples/helloworld/ on my system
still getting similar error

transport: http2Server.HandleStreams failed to read frame: read tcp [::1]:50051->[::1]:28563: wsarecv: An existing connection was forcibly closed by the remote host.

Server code:

package main

import (
    "log"
    "net"

    "golang.org/x/net/context"
    "google.golang.org/grpc"
    pb "google.golang.org/grpc/examples/helloworld/helloworld"
    "google.golang.org/grpc/reflection"
)

const (
    port = ":50051"
)

// server is used to implement helloworld.GreeterServer.
type server struct{}

// SayHello implements helloworld.GreeterServer
func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
    return &pb.HelloReply{Message: "Hello " + in.Name}, nil
}

func main() {
    lis, err := net.Listen("tcp", port)
    if err != nil {
        log.Fatalf("failed to listen: %v", err)
    }
    s := grpc.NewServer()
    pb.RegisterGreeterServer(s, &server{})
    // Register reflection service on gRPC server.
    reflection.Register(s)
    if err := s.Serve(lis); err != nil {
        log.Fatalf("failed to serve: %v", err)
    }
}

Client code

package main

import (
    "log"
    "os"

    "golang.org/x/net/context"
    "google.golang.org/grpc"
    pb "google.golang.org/grpc/examples/helloworld/helloworld"
)

const (
    address     = "localhost:50051"
    defaultName = "world"
)

func main() {
    // Set up a connection to the server.
    conn, err := grpc.Dial(address, grpc.WithInsecure())
    if err != nil {
        log.Fatalf("did not connect: %v", err)
    }
    defer conn.Close()
    c := pb.NewGreeterClient(conn)

    // Contact the server and print out its response.
    name := defaultName
    if len(os.Args) > 1 {
        name = os.Args[1]
    }
    r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: name})
    if err != nil {
        log.Fatalf("could not greet: %v", err)
    }
    log.Printf("Greeting: %s", r.Message)
}

I found something on googling as
https://go.googlesource.com/net/+/master/http2/server.go
https://golang.org/src/net/http/h2_bundle.go

which tells problem is Windows OS specific.
Not able to understand and find solution for it.

if runtime.GOOS == "windows" {

        if oe, ok := err.(*net.OpError); ok && oe.Op == "read" {

            if se, ok := oe.Err.(*os.SyscallError); ok && se.Syscall == "wsarecv" {

                const WSAECONNABORTED = 10053

                const WSAECONNRESET = 10054

                if n := http2errno(se.Err); n == WSAECONNRESET || n == WSAECONNABORTED {

                    return true

                }

            }

        }

    }

Can anyone help me out in it ?

[rashit.kh...@gmail.com]

Hello Nikhli, have you solved the issue?

вторник, 17 января 2017 г., 6:36:13 UTC+3 пользователь Nikhil Tathe написал: