private async Task ProcessMetaFromFile(Microsoft.AspNetCore.Http.HttpContext httpContext)
        {
            Meta.MetaFromFile meta = new Meta.MetaFromFile();
            if (!string.IsNullOrEmpty(_options.WsdlFileOptions.VirtualPath))
            {
                meta.CurrentWebServer = _options.WsdlFileOptions.VirtualPath + "/";
            }

            meta.CurrentWebService = httpContext.Request.Path.Value.Replace("/", string.Empty);

            WebServiceWSDLMapping mapping = _options.WsdlFileOptions.WebServiceWSDLMapping[meta.CurrentWebService];

            meta.XsdFolder  = mapping.SchemaFolder;
            meta.WSDLFolder = mapping.WSDLFolder;
            if (_options.WsdlFileOptions.UrlOverride != string.Empty)
            {
                meta.ServerUrl = _options.WsdlFileOptions.UrlOverride;
            }
            else
            {
                meta.ServerUrl = httpContext.Request.Scheme + "://" + httpContext.Request.Host + "/";
            }

            string wsdlfile = mapping.WsdlFile;

            string path         = _options.WsdlFileOptions.AppPath;
            string wsdl         = meta.ReadLocalFile(path + Path.AltDirectorySeparatorChar + meta.WSDLFolder + Path.AltDirectorySeparatorChar + wsdlfile);
            string modifiedWsdl = meta.ModifyWSDLAddRightSchemaPath(wsdl);

            //we should use text/xml in wsdl page for browser compability.
            httpContext.Response.ContentType = "text/xml;charset=UTF-8";
            byte[] data = System.Text.Encoding.UTF8.GetBytes(modifiedWsdl);
            await httpContext.Response.Body.WriteAsync(data, 0, data.Length);
        }
        private async Task ProcessXSD(Microsoft.AspNetCore.Http.HttpContext httpContext)
        {
            Meta.MetaFromFile meta = new Meta.MetaFromFile();
            if (!string.IsNullOrEmpty(_options.WsdlFileOptions.VirtualPath))
            {
                meta.CurrentWebServer = _options.WsdlFileOptions.VirtualPath + "/";
            }

            meta.CurrentWebService = httpContext.Request.Path.Value.Replace("/", string.Empty);
            var mapping = _options.WsdlFileOptions.WebServiceWSDLMapping[meta.CurrentWebService];

            meta.XsdFolder = mapping.SchemaFolder;

            if (_options.WsdlFileOptions.UrlOverride != string.Empty)
            {
                meta.ServerUrl = _options.WsdlFileOptions.UrlOverride;
            }
            else
            {
                meta.ServerUrl = httpContext.Request.Scheme + "://" + httpContext.Request.Host + "/";
            }

            string xsdfile = httpContext.Request.Query["name"];

            //Check to prevent path traversal
            if (string.IsNullOrEmpty(xsdfile) || Path.GetFileName(xsdfile) != xsdfile)
            {
                throw new ArgumentNullException("xsd parameter contains illeagal values");
            }

            if (!xsdfile.Contains(".xsd"))
            {
                throw new Exception("xsd request must contain .xsd");
            }

            string path        = _options.WsdlFileOptions.AppPath;
            string safePath    = path + Path.AltDirectorySeparatorChar + meta.XsdFolder + Path.AltDirectorySeparatorChar + xsdfile;
            string xsd         = meta.ReadLocalFile(safePath);
            string modifiedxsd = meta.ModifyXSDAddRightSchemaPath(xsd);

            //we should use text/xml in wsdl page for browser compability.
            httpContext.Response.ContentType = "text/xml;charset=UTF-8";
            byte[] data = System.Text.Encoding.UTF8.GetBytes(modifiedxsd);
            await httpContext.Response.Body.WriteAsync(data, 0, data.Length);
        }