<%  if (request.getParameter("logoff") != null) {    session.invalidate();    response.sendRedirect(request.getContextPath()+"/control/signin_cfb");    return;  }%><font face="Arial" size="2"> You are logged in as remote user <b><%= request.getRemoteUser() %></b>in session <b><%= session.getId() %></b></font><br><br><%  if (request.getUserPrincipal() != null) {%>User principal name is    <b><%= request.getUserPrincipal().getName() %></b><br><br><%  } else {%>User principal not found!<br><br><%  }%><%  String role = request.getParameter("role");  if (role == null)    role = "";  if (role.length() > 0) {    if (request.isUserInRole(role)) {%>      You have been granted role <b><%= role %></b><br><br><%    } else {%>      You have <i>not</i> been granted role <b><%= role %></b><br><br><%    }  }%>To check whether your username has been granted a particular role,enter it here:<form method="GET" action='<%= response.encodeURL("index.jsp") %>'><input type="text" name="role" value="<%= role %>"></form><br><br>If you have configured this app for form-based authentication, you can logoff by clicking<a href='<%= response.encodeURL("index.jsp?logoff=true") %>'>here</a>.This should cause you to be returned to the logon page after the redirectthat is performed.