Fix IPC Paths For Windows (#11324)

* return early for windows

* mick's review

beacon-chain/execution/rpc_connection.go

@@ -113,7 +113,7 @@ func (s *Service) newRPCClientWithAuth(ctx context.Context, endpoint network.End
 		if err != nil {
 			return nil, err
 		}
-	case "":
+	case "", "ipc":
 		client, err = gethRPC.DialIPC(ctx, endpoint.Url)
 		if err != nil {
 			return nil, err

cmd/beacon-chain/main.go

@@ -188,6 +188,9 @@ func main() {
 		if err := cmd.ExpandSingleEndpointIfFile(ctx, flags.ExecutionEngineEndpoint); err != nil {
 			return err
 		}
+		if err := cmd.ExpandSingleEndpointIfFile(ctx, flags.HTTPWeb3ProviderFlag); err != nil {
+			return err
+		}
 		if ctx.IsSet(flags.SetGCPercent.Name) {
 			runtimeDebug.SetGCPercent(ctx.Int(flags.SetGCPercent.Name))
 		}

cmd/helpers.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"runtime"
 	"strings"
 
 	"github.com/pkg/errors"
@@ -73,12 +74,17 @@ func EnterPassword(confirmPassword bool, pr PasswordReader) (string, error) {
 	return passphrase, nil
 }
 
-// ExpandSingleEndpointIfFile expands the path for --http-web3provider if specified as a file.
+// ExpandSingleEndpointIfFile expands the path for --execution-provider if specified as a file.
 func ExpandSingleEndpointIfFile(ctx *cli.Context, flag *cli.StringFlag) error {
 	// Return early if no flag value is set.
 	if !ctx.IsSet(flag.Name) {
 		return nil
 	}
+	// Return early for non-unix operating systems, as there is
+	// no shell path expansion for ipc endpoints on windows.
+	if runtime.GOOS == "windows" {
+		return nil
+	}
 	web3endpoint := ctx.String(flag.Name)
 	switch {
 	case strings.HasPrefix(web3endpoint, "http://"):