[wp-trac] [WordPress Trac] #63316: [E_WARNING] Undefined array key "host" in wp-includes/canonical.php on line 717

[WordPress Trac]

#63316: [E_WARNING] Undefined array key "host" in wp-includes/canonical.php on line
717
-------------------------------------------------+-------------------------
 Reporter:  ArtZ91                               |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  new
 Priority:  normal                               |   Milestone:  Awaiting
                                                 |  Review
Component:  Canonical                            |     Version:  6.8
 Severity:  normal                               |  Resolution:
 Keywords:  has-test-info has-patch needs-       |     Focuses:
  testing                                        |
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Comment (by SirLouen):

 == More Testing info

 It seems that some versions of Curl (over 8.10.x) add automatically a Host
 despite you set the header with `Host:` empty explicitely

 For this reason an alternative is using another tool like netcat

 Create a file called for example `request.txt` like:

 {{{
 GET / HTTP/1.0

 }}}

 Note the empty line by the end, this is important depending on the OS you
 are testing this.

 And then call this like: `nc localhost 8080 < request.txt` (or `ncat` in
 Windows, you may need `nmap` tools)

 The thing here is that HTTP 1.0 is the key: An Apache server, accepting
 1.0 insecure requests, a gift of a server... is the method to trigger
 these canonical errors.

 @ArtZ91 upgrade that prehistoric server!!!

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/63316#comment:11>
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