aspweb服务器经常自动关闭

public class ErrorHandlingMiddleware
{
    private readonly RequestDelegate _next;

    public ErrorHandlingMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        try
        {
            await _next(context);
        }
        catch (Exception ex)
        {
            // 记录异常信息
            Console.WriteLine($"An unhandled exception occurred: {ex.Message}");

            // 返回错误响应
            context.Response.ContentType = "application/json";
            context.Response.StatusCode = StatusCodes.Status500InternalServerError;
            await context.Response.WriteAsync(new ErrorDetails
            {
                StatusCode = context.Response.StatusCode,
                Message = "Internal Server Error."
            }.ToString());
        }
    }
}

public class ErrorDetails
{
    public int StatusCode { get; set; }
    public string Message { get; set; }

    public override string ToString()
    {
        return JsonConvert.SerializeObject(this);
    }
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseMiddleware<ErrorHandlingMiddleware>();
    }

    app.UseRouting();

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
    });
}