[Bug 1928100] Update Released

[Łukasz Zemczak]

The verification of the Stable Release Update for apt has completed
successfully and the package is now being released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1928100

Title:
  TLS handshake is fatal, not transient - hence not retried

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Hirsute:
  Fix Released

Bug description:
  [Impact]
  TLS handshakes are reported as fatal errors rather than transient errors like other connection errors on unencrypted connections. This seems wrong - a server may just be spinning up or down and fail during the handshake, and prevents retrying such downloads

  [Test plan]

  A test case has been added to the integration test suite that ensures
  handshake errors are retried upon configuration.

  [Where problems could occur]
  Transient errors do not cause an error exit from apt update, so scripts relying on errors from TLS handshakes in such situations will fail.

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