signalR some cookie not sent to hub -cross domain

I add cookie key, and the new cookie key not sent to server . when i console document.cookie I see the new value. but not see it in the request,

client code (angular):

$cookies.InternalToken = credentials.token;
_connectionHub
   .start();

hub code (.net c#):

var connection = new HubConnection(url);
connection.CookieContainer = new System.Net.CookieContainer();
connection.CookieContainer.Add(new System.Net.Cookie() { Name = "InternalToken", Value = "" });