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Reply To: Windows – Forcibly closed error



@Casao wrote:

2008-01-17 21:33:44 (9b65e856): Thread 98: could not read: An existing connection was forcibly closed by the remote host.[/code]

The metacode stuff is normal. The error above is because iTunes closed the connection ungracefully. Usually that’s because it doesn’t like what it sees and quits the connection or something like that.

– Tried it under iTunes 7.5 in Parallels on my Macbook Pro, it didn’t generate the log entry, but showed the same “[null]” connection in the web panel.

– Tried it on a completely unrealted Windows PC running Windows XP SP2 and iTunes 7.6,, it generated an identical log and showed a “[null]” on the web control panel.

That’s likely a bug in that the server isn’t closing the connection right when the client terminates ungracefully. Still… same root cause though.

– I just tried it by running iTunes on the server and it actually connected fine – however, instead of showing a lan ip on the Server Status page, it shows my internet IP. The music plays fine.


Are you saying that your server has multiple interfaces? Like two nics, one connected to your internal network and another connected to the internet?

Or is one the hamachi interface? Or what?

Sounds like you have some unique network configuration here, and that’s probably what’s going on. The fact that you are connecting to a public ip is probably also a clue.

I attempted to open port 9999 & 5353 on my router because I saw that it worked when connecting via the external port. However, it’s still a no go and I can’t get it to work.

5353 is udp, and it’s the discovery protocol. If it shows up in iTunes at all, that part is working. 9999 is the part that serves the music. You can connect to port 9999 with a web browser (http://ip.address:9999) and see if you get a password prompt. That can help debug firewall issues, or problems with binding particular interfaces.

Is there any reason why the iTunes on the server can get to the shares while the others can’t? I figured since it was an external IP there was something wrong with my local network – however, samba shares and everything will work just fine.

I expect that’s the root of the problem. Mdns uses different discovery techniques than does windows browsing, so likely the different discovery stuff is doing something enough differently that the apple discovery stuff is discovering the external interface, while the broadcast based discovery is discoving the internal interface. Or that’s my guess, anyway.

Are there any ports beside 9999 and 5353 that need to be forwarded from my router to the server? Is there any reason why iTunes from the same machine can connect to the server, but comes up as my external IP instead of one of the local hosts?

see above. Yeah, my guess is that if you are multihomed, the server itself can connect to the outside ip. Again, I’d have to have more info on how you network is set up. From inside the network, you shouldn’t be able to access the machine by public ip. Most routers don’t support one-armed natting like that.

On the server status page, should I be seeing a connection from with status “Serving xml-rpc method”?

yes. is the local machine, and when you are viewing the status page, it’s logging into the server to fetch the status… and the connection it’s seeing is the connection it’s making to check connections. 🙂

And is there any other information or other files you need to help diagnose this problem? If you tell me what you want, I can provide just about any information about my setup.

Net info… how many interfaces, what routing devices, access points, etc. A general idea of how your public/private are set up, at least in terms of how you are natting and that kind of thing.

But yeah, the public ip thing is the thing that’s breaking it, I’m sure.

— Ron