From a96f20f9b5e0807040c8e979274c74f952a75a10 Mon Sep 17 00:00:00 2001
From: John Blackbourn <johnbillion@git.wordpress.org>
Date: Mon, 29 Aug 2016 12:00:32 +0000
Subject: [PATCH] Comments: Add support for all HTTP protocol versions when
 returning a 405 from `wp-comments-post.php`.

Fixes #37863
Props tnash

Built from https://develop.svn.wordpress.org/trunk@38432


git-svn-id: http://core.svn.wordpress.org/trunk@38373 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-comments-post.php    | 7 ++++++-
 wp-includes/version.php | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/wp-comments-post.php b/wp-comments-post.php
index 4e9f1fcfb0..2c421d327a 100644
--- a/wp-comments-post.php
+++ b/wp-comments-post.php
@@ -6,8 +6,13 @@
  */
 
 if ( 'POST' != $_SERVER['REQUEST_METHOD'] ) {
+	$protocol = $_SERVER['SERVER_PROTOCOL'];
+	if ( ! in_array( $protocol, array( 'HTTP/1.1', 'HTTP/2', 'HTTP/2.0' ) ) ) {
+		$protocol = 'HTTP/1.0';
+	}
+
 	header('Allow: POST');
-	header('HTTP/1.1 405 Method Not Allowed');
+	header("$protocol 405 Method Not Allowed");
 	header('Content-Type: text/plain');
 	exit;
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8c0f96cf54..bd5a8ac3da 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38431';
+$wp_version = '4.7-alpha-38432';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.