Doing FTP while torrenting

[yagami_kira]

I have Windows Vista

I have uTorrent 1.8

I have CuteFTP 8

The problem is when uTorrent is open and downloading torrents, I can't do FTP transfers (I tried other ftp clients too). The error is "The connection failed due to an error or timeout."

Take note that I can do other things like browsing and uTorrent is not using my full DSL speed anyway.

Are there other people here who have hard time to run an FTP client and utorrent at the same time?

[Firon]

Set net.max_halfopen to 8 or less.

[yagami_kira]

It's actually set to 8

[Ultima]

Try net.max_halfopen of 4.

[yagami_kira]

It seems to be working when it's 4. I'll monitor it in the next few days and see what will happen.

Also, what will be the disadvantage if it's set to 4 rather than the default 8? Will there be a significant loss in downloading speed?

[Ultima]

The setting only affects how quickly µTorrent attempts to connect to peers, which doesn't affect speed beyond the first few minutes (if at all).

[yagami_kira]

Uh oh. After few minutes while torrent is open, I can't use FTP again (timeout error), even though torrent is eating only 20% of my DSL bandwidth.

Just like before I can only do FTP again if I restart the computer or disable and reenable the LAN connection.

I guess the max halfopen has nothing to do with it since my Vista Ultimate is set to 25 by default

What could be wrong?

[Ultima]

http://forum.utorrent.com/viewtopic.php?pid=258231#p258231

Other suggestions.

[Switeck]

Even if uTorrent's half open connection limit is set to 1-4, you can still get incoming connections that don't count against that limit if you're not firewalled. So on busy public torrents, connecting to lots of peers+seeds can happen very rapidly. Private torrents connect slower because peers+seeds can only get your ip from the tracker, not from each other.

[Firon]

http://download.utorrent.com/beta/utorrent-1.8.1-beta-12024.upx.exe

Give this build a try.

[yagami_kira]

I just noticed that if I do not use port forwarding on my router for uTorrent, I can do FTP transfers at the same time while uTorrent is downloading torrents.

In other words, if I use port forwarding on my router for torrents, FTP transfers will just time out.

Do you have any idea why this happen? I remember I have this exact same problem before in Windows XP even with the older version of uTorrents.

BTW, the reason why I use port forwarding is because sometimes, the Network icon in uTorrent does not turn green. But if I use port forwarding in my router, it's always green.

[Ultima]

What port are you using in µTorrent (incoming/listening, and net.outgoing_port)? What router? Tested Firon's link? What of the link I posted previously and the information requested in it?