问中间件在启动项目时写入响应

EN

public async Task InvokeAsync(HttpContext context)
        {
            var pl = context.Request.Cookies["pl"];
            var sig = context.Request.Cookies["sig"];
            if (string.IsNullOrWhiteSpace(pl) || string.IsNullOrWhiteSpace(sig))
            {
                context.Response.StatusCode = StatusCodes.Status400BadRequest;
                context.Response.ContentType = "application/json";
                await context.Response.WriteAsync("Invalid Data");
                return;
            }
           // If success i process and do something
            
            // Call the next delegate/middleware in the pipeline
            await _next(context);
        }