[Bug 1766542] Re: Installation blocks when the machine is behind a proxy server

[Julian Andres Klode]

I don't see how we can achieve an overall timeout. We only have per
connect() timeouts available, and we run multiple apt processes /
fetches. We can limit the individual connect() timeout to 30s, but
overall? I think we do one attempt for archive.ubuntu.com / mirror and a
another for security, so we should be looking at a one minute timeout
overall.

In fact, apt-setup already sets a timeout of 30 seconds for the updates.
Now about the 16.04 log: I'm not sure about networking, is that an
IPv6-only network? It times out for security.ubuntu.com after 3 minutes,
which is expected for 6 addresses (and security.u.c resolves to 6 IPv4
and 6 IPv6 addresses).

With 18.04 apt, this should time out in roughly 32 seconds (6 , which
seems to match the second 18.04 result. Not sure why it times out in 90
seconds of file 1 of 3, though. Do you have logs?

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https://bugs.launchpad.net/bugs/1766542

Title:
  Installation blocks when the machine is behind a proxy server

Status in OEM Priority Project:
  Confirmed
Status in apt package in Ubuntu:
  New
Status in ubiquity package in Ubuntu:
  Incomplete
Status in apt source package in Bionic:
  New
Status in ubiquity source package in Bionic:
  New

Bug description:
  When the machine is behind a proxy server, the installation will block
  for a while (several minutes) to retrieve the package lists. The
  timeouts are too long and makes user feels the machine may have some
  problems.

  The symptom is similar with bug #14599, but it seems the apt-setup
  module was rewritten.

  Another method to trigger this issue is to make the machine cannot
  access to the Internet, for instance: a wrong gateway.

  Image: 16.04

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