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[Mauricio Faria de Oliveira <mfo@xxxxxxxxxxxxx>]

Attaching the updated debdiffs for reference.

They build successfully on a PPA for all architectures,
and have been used on steps to reproduce/verify (below.)

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https://bugs.launchpad.net/bugs/1863232

Title:
  daemon rotates socket on restart

Status in mod-wsgi package in Ubuntu:
  Fix Released
Status in mod-wsgi source package in Xenial:
  In Progress
Status in mod-wsgi source package in Bionic:
  In Progress

Bug description:
  [Impact]

   * Lack of option for disabling wsgi socket rotation leads to errors on graceful restarts, making them not as graceful.
   * This change introduces a new config option WSGISocketRotation that allows to disable the rotation.

  [Test Case]

   * Setup apache2 with mod-wsgi.
   * Make sure there are some wsgi sockets open.
   * Reload apache gracefully.

  Expected result:
  No errors related to sockets in the logs

  Actual result:
  There are error messages related to sockets in the logs.

  [Regression Potential]

   * Since the value is set to On by default any regressions would manifest only after explicitly setting it to Off.
   * After it's set to off WSGI application behavior will change on reloads - connections should be resumed instead of cancelled.

  [Other Info]
   
   * Original bug description:
  On Apache reloads the WSGI daemon tries to rotate wsgi sockets causing unnecessary log entries, especially in OpenStack context.

  This has been addressed in mod-wsgi upstream (4.6.0) and could be
  backported to Ubuntu.

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