Ok - i missed some informations!
There is used apache with mod_proxy and following modules - proxy_http, proxy, proxy_fcgi, proxy_ajp
and following additional rules for apache:
ProxyRequests On
ProxyPreserveHost On
ProxyPass /App/ 127.0.0.1:8080/App/
ProxyPassReverse /App/ 127.0.0.1:8080/App/