SignalR中获取cookie的解决方法

普通类中：

HttpCookie cookie = new HttpCookie(CookieKeyCometUserName);
cookie.Name = CookieKeyCometUserName;
cookie.Value = userName;
cookie.Expires = SystemTime.Now().AddDays(1);   // 不加这句，就读不到，不知何故？

HttpContext.Current.Response.Cookies.Add(cookie);

Hub方法中：

            HttpCookie cookie = HttpContext.Current.Request.Cookies[CookieKeyCometUserName];if (cookie != null){return cookie.Value.DESDecrypt();}return "";