connect() to 127.0.0.1:9050 failed after select(): Connection refused (111) #20439

Expected behavior

Until recently Core made outbound connections and I frequently saw up to 30 incoming connections via its onion address.

Actual behavior

Core is unable to connect through Tor or accept incoming connections through Tor. connect() to 127.0.0.1:9050 failed after select(): Connection refused (111)

To reproduce

I have configured Core to connect through the Tor Socks proxy at 127.0.0.1:9050. I have verified that the Tor Socks proxy is functional at this ip:port.

bitcoin.conf

listen=1
externalip=rn2rjwuxfjzvjfkg2hmrduc2n7tjjpasrlianfskdhhhhfqqvf7kliyd.onion
discover=1

System information

I'm running Bitcoin Core version v0.20.1, installed via Snap on Ubuntu 18.04.5 LTS

The onionrn2rjwuxfjzvjfkg2hmrduc2n7tjjpasrlianfskdhhhhfqqvf7kliyd.onion 8333is not reachable as of now over Tor, AFAICS

Can u give some more hints, i.e. is ur node still running, from where u grabbed this onion address that u suppose is assigned to your running Tor instance and that is assigned to your bitcoin node?

And most important, before u encountered that problem, did u restart or had to for any reasons had to restart your Bitcoin node with that configuration in the last week or so?

Correct, there is currently no service reachable behind that onion address, as all connections between Tor and Core fail

The node is still running and up to date, I have connected it to a second node over the local network. Services on top of it (EPS, LND) are also running, LND uses the same Tor Socks proxy at the same port.

The problem appeared as I was updating Ubuntu, below you can find a list of packages that were installed. I later also restarted Core and the computer.

2020-11-20 13:44:11 install libdouble-conversion1:amd64 <none> 2.0.1-4ubuntu1
2020-11-20 13:44:11 install libqt5core5a:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:12 install libqt5dbus5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:12 install libqt5network5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:12 install libxcb-xinerama0:amd64 <none> 1.13-2~ubuntu18.04
2020-11-20 13:44:12 install libqt5gui5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:13 install libqt5widgets5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:13 install libqt5svg5:amd64 <none> 5.9.5-0ubuntu1
2020-11-20 13:44:13 install libqt5xml5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:13 install libqt5designer5:amd64 <none> 5.9.5-0ubuntu1
2020-11-20 13:44:13 install libqt5sql5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:14 install libqt5help5:amd64 <none> 5.9.5-0ubuntu1
2020-11-20 13:44:14 install libqt5printsupport5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:14 install libqt5sql5-sqlite:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:14 install libqt5test5:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:14 install libsecp256k1-0:amd64 <none> 0.1~20170810-1
2020-11-20 13:44:14 install python3-sip:amd64 <none> 4.19.7+dfsg-1ubuntu0.1
2020-11-20 13:44:14 install python3-pyqt5:amd64 <none> 5.10.1+dfsg-1ubuntu2
2020-11-20 13:44:15 install qt5-gtk-platformtheme:amd64 <none> 5.9.5+dfsg-0ubuntu2.5
2020-11-20 13:44:15 install qttranslations5-l10n:all <none> 5.9.5-0ubuntu1

The problem appeared as I was updating Ubuntu,

Yup reboot, but probably unrelated to Ubuntu. could u tell me if u created the onion in torrc or with your bitcoins nodes call to the service api of your Tor instance?

Would u mind to do some tests and not mind if we create a new onion? And I.e could u usenetcat -vv 127.0.0.1 9050and tell me if u have a connect? edit@saibato Did i read correct, LND running and has Tor inbound outbound?

Thanks for the netcat tip, this appears to be a Tor issue, I will investigate in that direction and close this issue. Although that does raise the issue of how LND is connecting through tor...

Btw

, I will investigate in that direction

Tyi ur node is now up again .with that onion.

Yes, turned out to be a torrc config error. Sorry about the trouble, thanks for your help!

what was the fix ihave the same issue?

I have exactly the same problem. I want to connect and accept connections using tor and running everything in docker.

My config looks like:

mainnet=1
[main]
printtoconsole=1
rpcallowip=::/0
rpcbind=0.0.0.0:8332
rpcauth=xxx
blockfilterindex=1
mainnet=1
whitelist=0.0.0.0/0
rpcallowip=0.0.0.0/0
zmqpubrawblock=tcp://0.0.0.0:28332
zmqpubrawtx=tcp://0.0.0.0:28333
listen=1
discover=0
torpassword=xxx
onlynet=onion
externalip=xxx.onion
torcontrol=172.21.0.3:9051
proxy=172.21.0.3:9050

Wherein 172.21.0.3 is an ip to a docker container which is running tor 0.4.4 .

What I want is a setup wherein only tor is used for inbound as well as outbound connections and run everything in docker.

Somehow it constantly gives the error: connect() to 127.0.0.1:9050 failed after select(): Connection refused (111)