authentication

[Boris Garbuzov]

When I am hitting admin application
http://localhost:8080/admin/contextAdmin/contextAdmin.html, it tries to
authenticate me, but does not accept pairs from tomcat-users.xml. Can somebody
explain me how to use this app?
--------------
<tomcat-users>
  <user name="tomcat" password="tomcat" roles="tomcat" />
  <user name="role1"  password="tomcat" roles="role1"  />
  <user name="both"   password="tomcat" roles="tomcat,role1" />
</tomcat-users>