Command not found proxy error with Fedora 32

Hi,

I have an issue with PackageKit-command-not-found since around the upgrade to Fedora 32 (from F31). Whenever I type an invalid command I get the following error:

Failed to search for file: cannot update repo 'updates-modular': Cannot prepare internal mirrorlist: Curl error (5): Couldn't resolve proxy name for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Unsupported proxy syntax in 'http://:8080/']; Last error: Curl error (5): Couldn't resolve proxy name for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Unsupported proxy syntax in 'http://:8080/']

I can’t seem to find out how PackageKit or libdnf gets the invalid proxy here. I don’t use any proxy and dnf works fine, I can update, search, install packages as usual, this only affects the command-not-found tool as far as I can see.

I tried disabling modular repo, but then it just errors with a different repo, actually in PackageKit logs there is an error for every repo I have saying “Skipping refresh of reponame: cannot update repo ‘reponame’ …” the rest is the same as the error above ending with the invalid proxy setting.

I tried adding proxy=_none_ to dnf.conf but it didn’t change anything.
My env does not have any proxy variables set either (normal dnf commands work fine).

Has anyone any idea on where could I look for the proxy setting that PackageKit uses?

kernel-5.6.14-300.fc32.x86_64
libdnf-0.47.0-1.fc32.x86_64
dnf-4.2.21-1.fc32.noarch
PackageKit-1.1.13-3.fc32.x86_64
PackageKit-command-not-found-1.1.13-3.fc32.x86_64

I just noticed that I can use pkcon to reproduce it. Quick look at the source code shows that it reads the http_proxy env variable.

➜  ~ pkcon get-updates
Getting updates               [=========================]         
Finished                      [=========================]         
Fatal error: cannot update repo 'updates-modular': Cannot prepare internal mirrorlist: Curl error (5): Couldn't resolve proxy name for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Unsupported proxy syntax in 'http://:8080/']; Last error: Curl error (5): Couldn't resolve proxy name for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Unsupported proxy syntax in 'http://:8080/']

Now when I use http_proxy the value gets used, but since I do not have a proxy it errors out as well:

➜  ~ http_proxy=127.0.0.1  pkcon get-updates
Getting updates               [=========================]         
Finished                      [=========================]         
Fatal error: cannot update repo 'updates-modular': Cannot prepare internal mirrorlist: Curl error (7): Couldn't connect to server for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Failed to connect to 127.0.0.1 port 1080: Connection refused]; Last error: Curl error (7): Couldn't connect to server for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Failed to connect to 127.0.0.1 port 1080: Connection refused]

And the strange thing now is that it remembers this setting and now I keep getting the new error… Even killing packagekitd does not revert to the no proxy setting. I wonder where does PackageKit store this value

➜  ~ pkcon get-updates                      
Getting updates               [=========================]         
Finished                      [=========================]         
Fatal error: cannot update repo 'updates-modular': Cannot prepare internal mirrorlist: Curl error (7): Couldn't connect to server for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Failed to connect to 127.0.0.1 port 1080: Connection refused]; Last error: Curl error (7): Couldn't connect to server for https://mirrors.fedoraproject.org/metalink?repo=updates-released-modular-f32&arch=x86_64 [Failed to connect to 127.0.0.1 port 1080: Connection refused]

I found my answers here PackageKit/setting-the-proxy.txt at a7533e2c9eb0554bd32723f70d64a68acb67d7b4 · PackageKit/PackageKit · GitHub

Basically PackageKit proxy is set by GNOME at session start based on GSettings and then stores this setting in a database.

In GNOME I have no proxy as expected:

gsettings list-recursively org.gnome.system.proxy
...
org.gnome.system.proxy.http port 8080
org.gnome.system.proxy.http host ''

For some reason it seems PackageKit still tries to use http://:8080, which might be an incorrect entry stored in the DB, so I deleted all proxy entries from the sqlite db where it was stored and the problem got resolved. I restarted to be sure it doesn’t come back and while the “:8080” gets added to the DB again, pk does not complain about it anymore and just works.

For anyone encountering this issue, my fix was to clean the stored proxy entries.

> sqlite3 /var/lib/PackageKit/transactions.db
select * from proxy;
delete from proxy;
.exit

Edit: I found out that GNOME Software is sending the “:8080” proxy value because I had org.gnome.system.proxy.mode set to manual. Setting this to none if the proxy is not used anyway since the host is not set, should prevent this issue.

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.