“Could not create circuit, no first hop available”

[da2x]

Tribler version/branch+revision:

7.10.0

Operating system and version:

macOS 11.3

Steps to reproduce the behavior:

Download some torrents.

Expected behavior:

Torrents should download.

Actual behavior:

Every torrent works fine for about two minutes, then only intermittent activity on each every ten minutes or so.

Relevant log file output:

These messages repeated a thousand times over the course of a day. Maybe related? I’m curios why Tribler so frequently fails to establish circuits. Seems like an essential component that shouldn’t fail this often?

01:03:35,739 - TriblerTunnelCommunity(181) - Want 7 data circuits of length 3
01:03:35,739 - TriblerTunnelCommunity(247) - Creating a new circuit of length 3 (type: DATA)
01:03:35,740 - TriblerTunnelCommunity(277) - Look for a first hop that is not an exit node and is not used before
01:03:35,740 - TriblerTunnelCommunity(286) - Could not create circuit, no first hop available
01:03:35,740 - TriblerTunnelCommunity(184) - circuit creation of 7 circuits failed, no need to continue

01:03:36,583 - TriblerTunnelCommunity(452) - Creating introduction point
01:03:36,584 - TriblerTunnelCommunity(247) - Creating a new circuit of length 4 (type: IP_SEEDER)
01:03:36,584 - TriblerTunnelCommunity(277) - Look for a first hop that is not an exit node and is not used before
01:03:36,584 - TriblerTunnelCommunity(286) - Could not create circuit, no first hop available

https://github.com/Tribler/py-ipv8/blob/72c304f34891a9e963c444f473ce4f2868cfd711/ipv8/messaging/anonymization/community.py#L286

[qstokkink]

You may not be able to connect to others.

Could you enable Settings/DEBUG/Developer mode/Enable developer mode and then go to the Debug/IPv8/Overlays tab and screenshot the results? It should look something like this:

[da2x]

You may not be able to connect to others.

How do I troubleshoot this problem further? It seems to be a very frequently reoccurring problem, given the number of info messages in my log.

screenshot the results

[ichorid]

@egbertbouman , while are you still with us, could you please comment on this?

[qstokkink]

@da2x thanks for sharing. I don't see anything weird from your overall statistics. You are connected to others and seem to be interacting with them "normally". So basic networking is working, the problem lies somewhere else.

[egbertbouman]

To debug this further, we need to know how many circuits there are (Debug/Tunnels/Circuits tab) and to which peers we are connected (Debug/Tunnels/Peers tab).

[github-actions]

This issue has not seen activity for 60 days. It is now marked as stale. Please provide additional information or this issue may be closed in the future. We value your contribution and would love to hear more!

[qstokkink]

After three years without further info and nobody else to reproduce this, I'll close this issue. If more details do become available, this issue can be reopened.