Hi, i noticed one peer downloading from me who has downloaded a lot of bytes, but shows no progress.
I wonder if that's a bug in tixati, some broken client, or another instance of poisonous anti-torrent actions like a lot of ips in china show (downloading same torrent over and over).

here is what i see https://www.pasteboard.co/WJWoyi0gr36F.png

I have seen these too I don't know what the their deal is but its not tixatis fault afaik
I just block them

any way to block them automatically? they keep popping up hogging my bandwidth

I've possibly seen this before.

Please note there is a huge distinction from general leeching vs this 'fault' condition (gigabytes no progress)
The fault condition ONLY seems to happen if the torrent download is a partial (nobody online has 100%)
Hence it might not be spotted by the developers

It suspect it might be when one single torrent piece is incomplete it fails the checksum at the other end
so the other end retries infinity times to download this same piece until it passes the checksum, but it never will, hence doom-loop.
As there is no sensible logic built in to the (other end client software) it does not know when to give up trying - hence mass bandwidth wastage.

Pretty sure Transmission may be responsible for this. They have had some awful releases

To try diagnose if the piece issue is happening to you

Assuming situation is happening live:

TRANSFERS (screen)
PEERS (tab)
LOOK FOR PEER WITH ENORMOUS "BYTES OUT"
DOUBLE CLICK ON THAT PEER LINE
DETAIL LEVEL (CHANGE 3->4 Include Block Activity)

look in logs, monitor a while, if the piece number never changes its maybe re-sending same one forever

WORKING: (piece changing)
[18:20:54]  sent block data, piece=879
[18:26:31]  sent block data, piece=461
[18:30:19]  sent block data, piece=172


COULD INDICATE CORRUPT PIECE (same piece retry)
[19:03:15]  sent block data, piece=326
[19:17:04]  sent block data, piece=326
[19:41:39]  sent block data, piece=326

the thing is i have 100%
thanks for the tips, i'll continue to monitor, and will post logs once it pops up again
and one more thing - these peers have about 10mbps download speed compared to normal peers with up to 1, so they really are hurting

Oh that is strange? OK well I would now do a force recheck, if all is still 100% your side, the checksums all compute OK your side confirms you are not the issue.
I've seen it very rarely with too cheap HDD's that my Tixati said 100% but on force recheck it said 99.9% so the HDD may have had bad bits/sectors?

If your side is still OK (100%) after force recheck, just ignore the peer using right hand click and ignore peer, then maybe unban them in a week or two if you ever remember!

How to unban peers (you need fairly recent tixati version)

HOME screen, right hand side look for the prohibited sign, click that
Now pops up a box of banned/ignored peers
select the peer you banned
right hand click
unignore (green circle)

Hope that helps?

these torrents (along with thousands other) are on a raid mirror array with continuous background check on, so i don't believe they can silently go bad
the peers appear at random with the only thing in common is that they don't make any progress and have unusually high upload speed
they didn't appear for a week, maybe i ignored them all already
is there any way to see ignored peers, i don't see any sign on home page https://www.pasteboard.co/XUSle3slgTLG.png

Got some logs:
[12:18:33 PM]  sent block data, piece=1,899 offset=688,128 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=704,512 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=720,896 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=737,280 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=753,664 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=770,048 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=786,432 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=802,816 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=819,200 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=835,584 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=851,968 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=868,352 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=884,736 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=901,120 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=917,504 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=933,888 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=950,272 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=966,656 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=983,040 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=999,424 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=1,015,808 length=16,384
[12:18:33 PM]  sent block data, piece=1,899 offset=1,032,192 length=16,384
[12:18:34 PM]  received block request, piece=1,769 offset=933,888 length=16,384
[12:18:34 PM]  sent block data, piece=1,769 offset=933,888 length=16,384
[12:18:34 PM]  received block request, piece=1,770 offset=1,032,192 length=16,384
[12:18:34 PM]  sent block data, piece=1,770 offset=1,032,192 length=16,384
[12:18:34 PM]  received block request, piece=1,769 offset=1,032,192 length=16,384
[12:18:34 PM]  sent block data, piece=1,769 offset=1,032,192 length=16,384
[12:18:34 PM]  received block request, piece=1,769 offset=1,015,808 length=16,384
[12:18:34 PM]  sent block data, piece=1,769 offset=1,015,808 length=16,384
[12:18:34 PM]  received block request, piece=1,770 offset=458,752 length=16,384
[12:18:34 PM]  sent block data, piece=1,770 offset=458,752 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=720,896 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=720,896 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=606,208 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=606,208 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=753,664 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=753,664 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=704,512 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=704,512 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=901,120 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=901,120 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=442,368 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=442,368 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=688,128 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=688,128 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=638,976 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=638,976 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=507,904 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=507,904 length=16,384
[12:18:35 PM]  received block request, piece=1,770 offset=770,048 length=16,384
[12:18:35 PM]  sent block data, piece=1,770 offset=770,048 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=475,136 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=475,136 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=802,816 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=802,816 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=737,280 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=737,280 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=868,352 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=868,352 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=884,736 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=884,736 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=524,288 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=524,288 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=1,015,808 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=1,015,808 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=819,200 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=819,200 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=983,040 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=983,040 length=16,384
[12:18:36 PM]  received block request, piece=1,770 offset=655,360 length=16,384
[12:18:36 PM]  sent block data, piece=1,770 offset=655,360 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=851,968 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=851,968 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=622,592 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=622,592 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=999,424 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=999,424 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=933,888 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=933,888 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=835,584 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=835,584 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=917,504 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=917,504 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=950,272 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=950,272 length=16,384
[12:18:37 PM]  received block request, piece=1,770 offset=966,656 length=16,384
[12:18:37 PM]  sent block data, piece=1,770 offset=966,656 length=16,384
[12:18:37 PM]  remote not interested in local
[12:18:38 PM]  error: Remote disconnected
[12:18:38 PM]  stopping
[12:19:59 PM]  starting
[12:20:00 PM]  initiating connection
[12:20:00 PM]  securing connection
[12:20:00 PM]  error: Remote disconnected
[12:20:00 PM]  retrying connection in unencrypted mode
[12:20:00 PM]  initiating connection
[12:20:15 PM]  sent handshake
[12:20:15 PM]  error: Remote disconnected
[12:20:15 PM]  stopping

so it seems to actually download the contents and stop correctly after completion, just not reporting progress
client is Deluge/2.2.0 libtorrent/2.1.2.0