我正在Windows Azure 中测试具有多个实例的WebRole以测试负载平衡器。我必须对用户进行身份验证的代码如下:
protected void Application_AcquireRequestState(Object sender, EventArgs e)
{
HttpCookie authCookie =
HttpContext.Current.Request.Cookies
[FormsAuthentication.FormsCookieName];
if (authCookie != null)
{
FormsAuthenticationTicket authTicket =
FormsAuthentication.Decrypt(authCookie.Value);
SetUserCredentials(authTicket.Name, authTicket.UserData);
}
}
private void SetUserCredentials(string userName, string securityConfig)
{
Credentials auth = GetSessionCredentials();
if (auth == null && HttpContext.Current.Session != null)
{
log.DebugFormat("Credentials not available in session variable. Building credentials to __SessionSID.");
SID sid =
AuthenticationHelper.Get().
GetAuthenticatedSIDFromName(userName, securityConfig);
if (sid == null)
{
FormsAuthentication.SignOut();
FormsAuthentication.RedirectToLoginPage();
return;
}
auth = new Credentials(sid);
if (HttpContext.Current.Session != null)
{
log.DebugFormat("Saving credentials in a session variable");
HttpContext.Current.Session.Add("__SessionSID", auth);
}
}
log.DebugFormat("Time setting user credentials for user: {0} {1}ms", userName, Environment.TickCount - ini);
}
private Credentials GetSessionCredentials()
{
if (HttpContext.Current == null)
return null;
if (HttpContext.Current.Session == null)
return null;
return HttpContext.Current.Session["__SessionSID"] as Credentials;
}
这是我的问题。我在 Azure 中使用两个实例测试了 WebRole:
- 假设我登录并且 WebRole 实例 A 执行身份验证。
- 当我发出新请求,并且请求转到 WebRole 实例 B 时,其中的 authTicket
Current.Request.Cookies
和HttpContext.Current.Session["__SessionSID"]
都正常。
有人可以解释一下吗?我在所有 WebRole 实例之间共享会话?