Configured proxy is not being used for repository mirrors when redirected

[zeromind]

Hi,

when there's a proxy configured for a repository, with either proxy=<proxy_url>, or ?proxy=<proxy_url> appended to the baseurl, it's not being used for e.g. download.opensuse.org mirrors when redirected.

Steps to reproduce

system running openSUSE Leap 15.6

Configure repo with proxy

[openSUSE:Tools]
enabled=1
autorefresh=1
baseurl=https://download.opensuse.org/repositories/openSUSE:/Tools/${releasever}/
proxy=http://<proxy>:<port>

or

[openSUSE:Tools]
enabled=1
autorefresh=1
baseurl=https://download.opensuse.org/repositories/openSUSE:/Tools/${releasever}/?proxy=http://<proxy>:<port>

update repository metadata

zypper refresh

try installing/updating packages

zypper -vvv up / zypper -vvv install obs-service-snapcraft

Actual result

zypper tries to connect to the repository mirrors without any proxy. (?proxy parameter not present in URL in output)
Eventually, it falls back to the main URL with the proxy.

zypper.proxy_redirect.log

Expected result

zypper tries to connect to the repository mirrors with the proxy configured. (?proxy parameter present in URL in output)

[mlandres]

You are right. It's not propagated correctly. We'll review it.