How can I change the SocketFactory at runtime?

I have a question, maybe someone has had a similar problem. I have a client-server application with communication over RMI. The client may, through a dialog box, choose a connection "submethod":
* a simple RMI
* RMI over fixed ports
* RMI over HTTP.
After selection the application registers the proper socket factory with the RMISocketFactory.setSocketFactory(...) method. So, if the user disconnects from the server and tries to reconnect with another "submethod", the application throws the following exception:
java.net.SocketException: factory already definedAPI says "The RMI socket factory can only be set once", so how can I change the connection submethod at runtime?
Regards,
Marek.

You can't.

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Sounds like you have more going on than just a simple issue with Home Sharing and more dealing with Wi-Fi syncing. Start with the article below and see if that may resolve it.
iTunes 10.5 and later: Troubleshooting iTunes Wi-Fi syncing
http://support.apple.com/kb/TS4062
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