I2P SAM connection is not reestablished when closed

[Vort]

Tested with client_test and i2pd.

1. Start i2pd.
2. Start client_test and verify that SAM session is active at http://127.0.0.1:7070/?page=sam_sessions.
3. Stop i2pd (Force shutdown).
4. Start i2pd again.

Expected behaviour: SAM session is recreated once i2pd is up again (after step 4).
Actual behaviour: no session is (re)created, SAM sessions page is empty.

Reason: i2pd crashes sometimes and it is more convenient for user to restart just i2pd and not both i2pd and torrent client.

libtorrent version (or branch): c2012b0
platform/architecture: Windows
compiler and compiler version: clang 15.0.7

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[mpeter50]

I have a similar issue that I think could be caused by the same problem.

The short version is that when a libtorrent client's machine has been suspended (sleep/hibernate) for long enough, libtorrent loses the SAM connection until it is manually turned off and on again on the client side.
I have also found a clue that may mean that libtorrent tries to reconnect, but does that incorrectly.
It may be good to know that I have this problem with the Java implementation of the I2P router, not I2PD, so this may not be a router issue.

Details can be found at the above linked issue in the qBittorrent repo.
If it is preferred to also post the info to this issue or a separate one in the repo, please let me know.

[mpeter50]

I have disabled I2P functionality in qBittorrent a few weeks ago, and as it looks the frequent SAMBridge logs have stopped right there. Last such message was printed on 2023-11-09, almost a month ago. I don't remember exactly when did I turned off I2P functionality, but that date seems about right.

For now I won't turn it back on, as it wouldn't work anyway on my system.

[arvidn]

I believe this is a missing feature. The SAM connection is triggered by setting a SAM hostname and port in the settings.

[Neustradamus]

Linked to:

• I2P SAM connection not recovered when lost qbittorrent/qBittorrent#19886
• I2P connection fails with "failed to listen on ip" #7465