torrents added via magnets lack announce and announce-list (but only before restart?)

[killyourtv]

When a torrent is fetched in I2PSnark using a magnet, according to the snark UI, the tracker(s) is/are not retained.

This is easily reproduced:

1. Add a torrent using its magnet address, such as magnet:?xt=urn:btih:3c66dea129ea3a900faf96472e585513452c868c&dn=i2pupdate-0.9.13.su3&tr=http://tracker2.postman.i2p/announce.php

---

The torrent file will be fetched, but the Details at Postman tracker icon will not be displayed. The ​torrent information page will not show the tracker either, even though the tracker was in the magnet link and is in the retrieved torrent file.

$ btshowmetainfo i2pupdate-0.9.13.su3.torrent 
btshowmetainfo 20030621 - decode BitTorrent metainfo files

metainfo file.: i2pupdate-0.9.13.su3.torrent
info hash.....: 3c66dea129ea3a900faf96472e585513452c868c
file name.....: i2pupdate-0.9.13.su3
file size.....: 3859346 (58 * 65536 + 58258)
announce url..: http://tracker2.postman.i2p/announce.php

Download finished: i2pupdate-0.9.13.su3
Starting up torrent i2pupdate-0.9.13.su3
Metainfo received for Magnet 3c66dea129ea3a900faf96472e585513452c868c (i2pupdate-0.9.13.su3)
Fetching Magnet 3c66dea129ea3a900faf96472e585513452c868c (i2pupdate-0.9.13.su3)
Starting up torrent Magnet 3c66dea129ea3a900faf96472e585513452c868c (i2pupdate-0.9.13.su3)

It seems to me that the tracker would be recognized when Snark starts again and reads the *.torrent files, but I have not restarted since noticing this bug.

[killyourtv]

Yes, the tracker information will be seen after I2P is restarted.

[zzz]

yes. unimplemented.

Related / dup: #964

[killyourtv]

This has some relation to #964 but it's not a duplicate; this ticket is for the case of there being no trackers for the torrent (until restart) if the download is fetched via magnet.

I wasn't sure whether Snark would still talk to the tracker to report the torrent's progress or if it'd just communicate via the DHT/OpenTrackers, but I suppose it could be more of a cosmetic problem than a functionality problem.

[zzz]

In 1f9b91f318a0f2369243844a3cf7f485528492d7 0.9.13-8