[rtorrent 0.9.4 / libtorrent 0.13.4] rtorrent freeze when no Internet connexion

[R1kk3r]

I have a Debian server with rtorrent/rutorrent running. Yesterday, my Internet connexion was not working anymore because of a problem coming from my ISP. I noticed that rutorrent couldn't connect to rtorrent anymore. After killing/starting rtorrent many times, it seems that rtorrent freeze when no Internet connexion. I tried to set the log level to debug but it gave me no clues about what was happening. I don't think it's a critical problem but it could be annoying for people with a unstable internet connexion.

[mrvn]

On Wed, Oct 22, 2014 at 12:58:24PM -0700, R1kk3r wrote:

I have a Debian server with rtorrent/rutorrent running. Yesterday, my Internet connexion was not working anymore because of a problem coming from my ISP. I noticed that rutorrent couldn't connect to rtorrent anymore. After killing/starting rtorrent many times, it seems that rtorrent freeze when no Internet connexion. I tried to set the log level to debug but it gave me no clues about what was happening. I don't think it's a critical problem but it could be annoying for people with a unstable internet connexion.

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Reply to this email directly or view it on GitHub:
#247

Does it realy freeze or does it block on DNS requests? As far as I can
tell DNS is not done asynchron and when the internet is down this
blocks rtorrent till there is a timeout. Depending on how many
torrents you have and how many different trackers that can take a long
time, esspecially at startup. But rtorrent should react every now and
then.

MfG
Goswin

[slingamn]

+1; it looks to me like DNS resolution is being done on the same thread that manages the UI.

[shad00m]

i have the same problem i have a lot of torrents in and some public torrents have 7 or more udp trackers listed, rtorrent freezes for 30 minutes or so until i can use it again until another torrent is added with udp trackers

is there no way around it ? I've heard about compiling libtorrent with libc-ares but im not sure if that would fix it truly.

[slingamn]

I think this is a duplicate of issue #180.

[hopeseekr]

This is certainly a duplicate of #180.