[Bug 1771914] Re: release-upgrade-motd can't update message via apt proxy

[Launchpad Bug Tracker]

This bug was fixed in the package update-manager - 1:18.10.3

---------------
update-manager (1:18.10.3) cosmic; urgency=medium

  * Add support for HTTPS proxies; this breaks UpdateManager.Core.utils.init_proxy()
    API - the return value is now a dict, rather than a string (LP: #1771914).

 -- Julian Andres Klode <juliank at ubuntu.com>  Wed, 27 Jun 2018 14:16:45
+0200

** Changed in: update-manager (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1771914

Title:
  release-upgrade-motd can't update message via apt proxy

Status in update-manager package in Ubuntu:
  Fix Released

Bug description:
  I have configured apt proxy in apt.conf.d and apt update and apt
  install can work correctly. However, when I logged in system everyday,
  in the login message, it says:

  Failed to connect to https://changelogs.ubuntu.com/meta-release-lts.
  Check your Internet connection or proxy settings

  After further investigation, I found the the issue is caused in
  package python3-update-manager:

  python3-update-manager: /usr/lib/python3/dist-
  packages/UpdateManager/Core/utils.py

  In the init_proxy function of the python script, it only set a http
  proxy by below code:

  proxy_support = ProxyHandler({"http": proxy})

  after changing the line to add https proxy, it can work:

  proxy_support = ProxyHandler({"http": proxy, "https":proxy})

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