HELP: Constantly expiring cookie!!! :(

V

VB Programmer

I have a login page that creates a cookie. The expiration time (in seconds)
is in a string in web.config. The problem is that I have to keep logging
in after only a few minutes. Any ideas? Here's portions of my cookie
code...

Dim ctxMyContext As HttpContext = HttpContext.Current
Dim fatTicket As New FormsAuthenticationTicket( _
1, txtUserName.Text.ToUpper.Trim, DateTime.Now, _
DateTime.Now.AddMinutes(30), False, strUserData)
Dim strCookieValue As String =
FormsAuthentication.Encrypt(fatTicket)
Dim cookieMyCookie As HttpCookie = New
HttpCookie(FormsAuthentication.FormsCookieName)
Dim strReturnUrl As String

' Create custom cookie
With cookieMyCookie
.Path = FormsAuthentication.FormsCookiePath
.Value = strCookieValue
.Expires =
DateTime.Now.AddMinutes(CType(ConfigurationSettings.AppSettings("CookieExpir
ationMinutes"), Double))
End With
ctxMyContext.Response.Cookies.Add(cookieMyCookie)

Thanks,
Robert
 
A

Andre

If you use an absolute date as a expiration date, this
date is set by the server, in the server's timezone.

Cookie expiration is in a way handle by the client. The
browser decides whether to include the cookie in the
request send to the server. It does so if the expiration
date is ahead of the client date.

If the server is in a different timezone it can be
problematic.
 

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