gRPC: Use PathEscape encoded service name

transport/internet/grpc/config.go

@@ -1,6 +1,8 @@
 package grpc
 
 import (
+	"net/url"
+
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/transport/internet"
 )
@@ -12,3 +14,7 @@ func init() {
 		return new(Config)
 	}))
 }
+
+func (c *Config) getNormalizedName() string {
+	return url.PathEscape(c.ServiceName)
+}