Command "use_udp_trackers" does not exist.

[crazy-max]

rTorrent 0.9.7
libTorrent 0.13.7

rtorrent: Error in option file: ~/.rtorrent.rc:50: Command "use_udp_trackers" does not exist.

.rtorrent.rc :

# Maximum and minimum number of peers to connect to per torrent.
min_peers = 1
max_peers = 100

# Same as above but for seeding completed torrents (-1 = same as downloading)
min_peers_seed = 1
max_peers_seed = 50

# Maximum number of simultanious uploads per torrent.
max_uploads = 15

# Global upload and download rate in KiB. "0" for unlimited.
download_rate = 0
upload_rate = 0

# Default directory to save the downloaded torrents.
directory = /home/rtorrent/downloads/temp

# Default session directory. Make sure you don't run multiple instance
# of rtorrent using the same session directory. Perhaps using a
# relative path?
session = /home/rtorrent/.session

# Watch a directory for new torrents, and stop those that have been
# deleted.
schedule = watch_directory,1,1,"load_start=/home/rtorrent/.watch/*.torrent"
schedule = untied_directory,5,5,"stop_untied=/home/rtorrent/.watch/*.torrent"

# Close torrents when diskspace is low.
schedule = low_diskspace,5,60,close_low_diskspace=100M

# The ip address reported to the tracker.
#ip = 127.0.0.1
#ip = rakshasa.no

# The ip address the listening socket and outgoing connections is
# bound to.
#bind = 127.0.0.1
#bind = rakshasa.no

# Listening port for incoming peer traffic
network.port_range.set = 50000-50000
network.port_random.set = no

# Check hash for finished torrents. Might be usefull until the bug is
# fixed that causes lack of diskspace not to be properly reported.
check_hash = yes

# Set whether the client should try to connect to UDP trackers.
use_udp_trackers = yes

# Set the max amount of memory address space used to mapping file chunks. This refers to memory mapping, not
#  physical memory allocation. Default: \`1GB\` (\`max_memory_usage\`)
# This may also be set using ulimit -m where 3/4 will be allocated to file chunks.
#pieces.memory.max.set = 1GB

# Alternative calls to bind and ip that should handle dynamic ip's.
#schedule = ip_tick,0,1800,ip=rakshasa
#schedule = bind_tick,0,1800,bind=rakshasa

# Encryption options, set to none (default) or any combination of the following:
# allow_incoming, try_outgoing, require, require_RC4, enable_retry, prefer_plaintext
#
# The example value allows incoming encrypted connections, starts unencrypted
# outgoing connections but retries with encryption if they fail, preferring
# plaintext to RC4 encryption after the encrypted handshake
#
# encryption = allow_incoming,enable_retry,prefer_plaintext
encryption = allow_incoming,try_outgoing,enable_retry

# Enable DHT support for trackerless torrents or when all trackers are down.
# May be set to "disable" (completely disable DHT), "off" (do not start DHT),
# "auto" (start and stop DHT as needed), or "on" (start DHT immediately).
# The default is "off". For DHT to work, a session directory must be defined.
#
# dht = auto
dht = auto

# UDP port to use for DHT.
dht_port = 6881

# Enable peer exchange (for torrents not marked private)
peer_exchange = yes

# Logging:
#   Levels = critical error warn notice info debug
#   Groups = connection_* dht_* peer_* rpc_* storage_* thread_* tracker_* torrent_*
log.open_file = "log", (cat,/home/rtorrent/.log/rtorrent.log)
log.add_output = "info", "log"
#log.add_output = "tracker_debug", "log"

# XMLRPC
scgi_port = 0.0.0.0:5000
network.xmlrpc.size_limit.set = 10000000

# Set the umask for this process, which is applied to all files created by the program.
# default 0022
#system.umask.set = 0000
system.umask.set = 0022

# Add a preferred filename encoding to the list.
encoding_list = UTF-8

# Move finished
system.method.set_key = event.download.finished,move_complete,"d.set_directory=/home/rtorrent/downloads/complete/;execute=mv,-u,\$d.get_base_path=,/home/rtorrent/downloads/complete/"

[chros73]

Bunch of commands have been renamed, e.g. you're looking for: trackers.use_udp.set
(Don't forget to close this issue :) )

[crazy-max]

@chros73 Thanks!

[pyroscope]

And I hope you have a firewall in place, else say hello to the coin miners.

[crazy-max]

@pyroscope Yeah it's for a docker container purpose ;)
Will be lock to a local socket asap.

[BURN-MICROSUCK]

So as of dec/2023 does this work or not? Just wasted about an hour on this, seems like it doesn't. rtorrent is completely unusable with 90% of the time frozen/unresponsive, and the inconsistent and constantly changing config file "commands" makes it EXTREMELY annoying to test if anything works or not.

[kannibalox]

I don't see anything indicating it doesn't work, however I think a lot of people assume (not unreasonably) that this setting disables all UDP trackers, but it actually only disables them when the torrent is first loaded.

The easiest thing to do would be to disable all trackers with something like:

rtxmlrpc d.multicall2 '' main t.multicall=,t.disable=

and re-enable them as needed. It should be possible to script disabling just the UDP trackers if really needed.

If you suspect the UDP trackers are causing issues, the usual culprit is rtorrent being compiled without asynchronous DNS support (provided via c-ares). I believe some distros don't provide this by default, so you might have to find alternative packages or compile it yourself.