[wp-trac] [WordPress Trac] #57306: External HTTP test failures

[WordPress Trac]

#57306: External HTTP test failures
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 Reporter:  SergeyBiryukov                       |       Owner:
                                                 |  SergeyBiryukov
     Type:  defect (bug)                         |      Status:  accepted
 Priority:  normal                               |   Milestone:  6.2
Component:  Build/Test Tools                     |     Version:
 Severity:  normal                               |  Resolution:
 Keywords:  dev-feedback has-patch has-unit-     |     Focuses:
  tests                                          |
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Comment (by SergeyBiryukov):

 Replying to [comment:7 peterwilsoncc]:
 > Is it possible to test the method directly rather than rely on
 wordpress.org?

 Yeah, that was my thinking too. Thanks for the PR!

 Replying to [comment:8 dd32]:
 > As for the cause of the API starting to return differently, this was
 likely caused by the upgrade of nginx as noted, the
 [https://nginx.org/en/CHANGES nginx changelog] lists multiple header-
 combining changes in 1.23.0.

 Indeed, this one appears to be the most relevant here:
 {{{
 Changes with nginx 1.23.0                                        21 Jun
 2022
     ...
     *) Change: now nginx combines arbitrary header lines with identical
        names when sending to FastCGI, SCGI, and uwsgi backends, in the
        $r->header_in() method of the ngx_http_perl_module, and during
 lookup
        of the "$http_...", "$sent_http_...", "$sent_trailer_...",
        "$upstream_http_...", and "$upstream_trailer_..." variables.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/57306#comment:11>
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