public ActionResult Download(string user, IFormCollection llaves)
        {
            string     pathDescompress = "";
            FileModel  fileModel       = new FileModel();
            FileManage fileManage      = new FileManage();

            fileModel.RegisterFileName = llaves["Register"];
            fileModel.RegisterFileName = fileModel.RegisterFileName.Trim();
            using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri("https://localhost:44389/api/");
                var responseTask = client.PostAsJsonAsync("file/download/", fileModel);
                responseTask.Wait();
                var result = responseTask.Result;
                if (result.IsSuccessStatusCode)
                {
                    var read = result.Content.ReadAsStringAsync();
                    read.Wait();
                    JsonSerializerOptions name_rule = new JsonSerializerOptions {
                        PropertyNamingPolicy = JsonNamingPolicy.CamelCase, IgnoreNullValues = true
                    };
                    fileModel = JsonSerializer.Deserialize <FileModel>(read.Result, name_rule);
                    if (fileModel.Receiver == HttpContext.Session.GetString("UserName"))
                    {
                        fileModel.Status = 1;
                        responseTask     = client.PostAsJsonAsync("file/edit", fileModel);
                        responseTask.Wait();
                    }
                }
            }
            if (Path.GetExtension(fileModel.AbsolutePhat) == ".lzw")
            {
                using (var client = new HttpClient())
                {
                    client.BaseAddress = new Uri("https://localhost:44389/api/");
                    var responseTask = client.PostAsJsonAsync("file/decompress/", fileModel);
                    responseTask.Wait();

                    var result = responseTask.Result;
                    if (result.IsSuccessStatusCode)
                    {
                        var read = result.Content.ReadAsStringAsync();
                        read.Wait();
                        pathDescompress = read.Result;
                    }
                }
            }
            else
            {
                pathDescompress = fileModel.AbsolutePhat;
            }
            var ext = Path.GetExtension(pathDescompress).ToLowerInvariant();

            return(File(fileManage.RetunFile(pathDescompress), fileManage.GetFileType(ext), fileModel.OriginalFileName));
        }