chf_ccs_httpserver/IMCS_CCS/Controllers/JumpController.cs

using Microsoft.AspNetCore.Mvc; 

namespace IMCS.CCS.Controllers
{
    [ApiExplorerSettings(IgnoreApi = true)]
    public class JumpController : Controller
    {
        [Route("")]
        public IActionResult Index()
        {
            return Redirect("/client/index.html");
        }
    }
}