couldn't listen on any of the given ports

[Pablo Castellazzi]

20:50:19 - qBittorrent v1.0.0 started.
20:50:19 - Be careful, sharing copyrighted material without permission is against the law.
20:50:19 - qBittorrent is bind to port: 51135
20:50:19 - UPnP support [ON]
20:50:19 - NAT-PMP support [OFF]
20:50:19 - DHT support [ON], port: 51135
20:50:19 - PeX support [ON]
20:50:19 - Local Peer Discovery [ON]
20:50:19 - Encryption support [ON]
20:50:19 - <long torrent list removed>
20:50:22 - Couldn't listen on any of the given ports.

but my router (NetGear WPN824v2) report the connection is
open and forwarded with UPnP.
in my Ubuntu 8.04.1 box netstat -lntup report both ports
(tcp and udp) open and assigned to qbittorrent

the same happend with a manual port forwarding, i also tried without:
  - DHT
  - PeX
  - Local Peer Discovery

In all cases i got the message after qbittorrent is started.
I didn't notice any problem besides the message, and it only
happend at start, if i change some bittorrent parameter to force a
reconnection without restarting qbittorrent the message is not
shown.

[Christophe Dumez (hydr0g3n)]

Ok. I'll look into this tonight too. Thanks.

[Christophe Dumez (hydr0g3n)]

This looks like a bug in libtorrent. I forwarded the bug report to its author. Thank you for the report.

[Christophe Dumez (hydr0g3n)]

Note that this problem is probably not linked to UPnP or the router. This is a port binding error and not a port mapping one. Therefore, libtorrent reports that it is unable to open a port on your computer. This usually means that the port is already taken by another application.

Do you confirm that qBittorrent is actually working properly (i.e downloading) although you get this error on startup? Or do you have to save the program preferences again in order to make it operate properly? This will help identify the problem.

[Pablo Castellazzi (pcastellazzi)]

Christophe,

About the port being in use, that's not the case.

I only got the error when qbittorrent start, and im able to download files as expected
without any changes in the preferences.

Regards
Pablo

[aggapuma (aggapuma)]

Hi

I also getting this port binding problem until I re-enabled ipv6 support in my custom kernel (2.6.29.1)

When enabling ipv6 support in the kernel, I now get this:

20:49:23 - UPnP/NAT-PMP: Port mapping successful, message: successfully mapped port using UPnP. external port: 3381
20:49:23 - UPnP/NAT-PMP: Port mapping successful, message: successfully mapped port using UPnP. external port: 3381

Tested system: 2.6.29.1 / Debian Sid

[Christophe Dumez (hydr0g3n)]

This was fixed in qBittorrent v2.0.4.