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

[Julian Andres Klode]

The default time out now is:

- 120s * #ip-addresses before bionic
- 120s + 250ms * #ip-addresses for bionic

That's a substantial improvement. I still think we should lower the
timeout from 120s to 20s for cosmic, bringing this down to 20s + 250ms *
#ipaddr (if we estimate up to 4 ip addresses, it will succeed or fail
within 21s).

I'd be open to backporting happy-eyeballs to xenial too, once it has
spent some more time in bionic. The changes are local to a single file
(methods/connect.cc), but they are quite big relative to that file, so
we should be careful.

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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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