Tealeaf web capture filter uses three types of cookies to determine the content that belongs to a session, as well as where each session starts and stops. The cookie format consists of a 32-byte GUID (Globally Unique ID).

The following cookies are used:

• TLTSID (Session) is a temporary cookie, active only for the length of a browser session, used to group hits into a session. The end user can decide whether or not to allow this cookie.
• TLTHID (Hit) Assigned at the server, a hit cookie is used to identify a hit within a session. This temporary cookie is useful for server side processing of the hit. For example, if the hit is processed by an application server or a server handling instrumentation with the event API, the TLTHID is used by this server to identify the hit. The end user has no control over whether or not to allow the TLTHID.
• TLTUID (User) is a persistent cookie with a long expiration used to determine the user that generated the session. The end user has control over whether or not to allow this cookie. This cookie is available only for applications running under Internet Information Services (IIS).

  The Tealeaf web capture filter issues these cookies and should be installed on the Web server. The cookies are visible to the downstream application server.