Using cookies to manage a session

In a cookie session state management system, the client application or web browser provides the session ID in an HTTP cookie header instead of a URL. Cookie session management is supported with the 'Set-Cookie' HTTP response header of the sa_set_http_header system procedure.

Note

You can not rely on cookie state management when cookies can be disabled in the client application or web browser. Support for both URL and cookie state management is recommended. The URL-supplied session ID is used when session IDs are provided by both the URL and a cookie.

Example

The following example illustrates unique session ID creation within an HTTP web server SQL function where session IDs can be provided by a URL or a cookie:

CREATE FUNCTION set_session_cookie()
RETURNS LONG VARCHAR
BEGIN
    DECLARE session_id LONG VARCHAR;
    DECLARE tm TIMESTAMP;
    SET tm = NOW(*);
    SET session_id = 'session_' ||
        CONVERT( VARCHAR, SECONDS(tm) * 1000 + DATEPART( MILLISECOND, tm ) );
    CALL sa_set_http_option( 'SessionID', session_id );
    CALL sa_set_http_header( 'Set-Cookie',
        'sessionid=' || session_id || ';' ||
        'max-age=60;' ||
        'path=/session;' );
    SELECT CONNECTION_PROPERTY( 'SessionID' ) INTO session_id;
    RETURN( session_id );
END;

Using cookies to manage a session

Note

Example

See also