Upload failed behind router (provider box)

[Bougli]

Hi there.
I've a stange problem : i've put JFileupload on a local server, it works through local network.

But if i try from the web, through my router, it fails :
"Upload failed : java.net.SocketException: Connection reset"

Is there any special port to open ?
What could cause this ?
Sorry, for now, i can't give the url...

ps : i've forgotten : i browse with a 8090 port, and not the standard 80 port.
This is not a proxy, this is my internal 80 port translation for outside.
Could it be the problem ?

Thanks for your help.

[support]

You're using HTTP upload correct ? No there is no port to open expect the one port for HTTP, it could be any of your choice (80, 8090 ...). Are you using IP address in applet url parameter or server name ? It may be a DNS resolution problem.

[Bougli]

Ok thanks for the help.
Effectivly, i didn't precise correctly the port in the juploadfile url.

Works well now.
regards