“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]

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