Comment 85 for bug 1590608

Reviewed: https://review.openstack.org/650990
Committed: https://git.openstack.org/cgit/openstack/mistral/commit/?id=6e05155c1df28cde9c42667faa5cf392d2c5b0ef
Submitter: Zuul
Branch: stable/rocky

commit 6e05155c1df28cde9c42667faa5cf392d2c5b0ef
Author: Vlad Gusev <email address hidden>
Date: Thu Mar 7 15:38:57 2019 +0300

    Add http_proxy_to_wsgi middleware

    This sets up the HTTPProxyToWSGI middleware in front of Mistral API. The
    purpose of this middleware is to set up the request URL correctly in
    the case there is a proxy (for instance, a loadbalancer such as HAProxy)
    in front of the Mistral API.

    The HTTPProxyToWSGI is off by default and needs to be enabled via a
    configuration value.

    It can be enabled with the option in mistral.conf:
    [oslo_middleware]
    enable_proxy_headers_parsing=True

    Closes-Bug: #1590608
    Closes-Bug: #1816364
    Change-Id: I04ba85488b27cb05c3b81ad8c973c3cc3fe56d36
    (cherry picked from commit ca1acb656cbd1ec30e327fa67cd9f6e75345b14f)