Hi,
I have already tried several of WiFi modules as WebServer. Look at thread "WEB-Server with new ARDUINO wifi shield losing connection".
I have the problem that the connection to the router is lost at some point and thus the web server is no longer accessible. TThis also the case with the reboot of the router. Is there a possibility in your library for a connection test? Which xbee works with WiFly RN-XV. I have a SD card shield can also connect with.
Thanks for your help 