Sort header names in Access-Control-Request-Headers

LayoutTests/http/tests/xmlhttprequest/resources/access-control-preflight-request-header-sorted.php

+<?php
+require_once '../../resources/portabilityLayer.php';

[tyoshino (SeeGerritForStatus), 2015/01/29 10:44:53]

is this needed?

[hiroshige, 2015/01/29 11:08:11]

Removed. Also removed from *-lowercase.php, based on which I created
*-sorted.php.

+
+header("Access-Control-Allow-Origin: *");
+header("Access-Control-Max-Age: 0");
+
+if ($_SERVER["REQUEST_METHOD"] == "OPTIONS") {
+    // Check that the names in Access-Control-Request-Headers are
+    // "in lexicographical order, each converted to ASCII lowercase".
+    // Spec: http://www.w3.org/TR/cors/#cross-origin-request-with-preflight-0

[tyoshino (SeeGerritForStatus), 2015/01/29 10:44:53]

please cite fetch.spec.whatwg.org

[hiroshige, 2015/01/29 11:08:11]

Done.

+    if ($_SERVER["HTTP_ACCESS_CONTROL_REQUEST_HEADERS"] ==
+        'x-custom-s, x-custom-test, x-custom-u, x-custom-ua, x-custom-v') {
+        header("Access-Control-Allow-Headers: x-custom-s, x-custom-test, x-custom-u, x-custom-ua, x-custom-v");
+    } else {
+        header("HTTP/1.1 400");

[tyoshino (SeeGerritForStatus), 2015/01/29 10:44:53]

does this work even after calling header() emitting? even so, i slightly prefer
invoking L4-5 after this call.

[hiroshige, 2015/01/29 11:08:11]

Done.

+    }
+} else if ($_SERVER["REQUEST_METHOD"] == "GET") {
+    if (isset($_SERVER["HTTP_X_CUSTOM_S"]))
+        echo "PASS";
+    else
+        echo "FAIL";
+}
+?>