test: Consider the 'connection' header value as case-insensitive

This differs between Nginx versions and also may be normalized
by Highwinds. Both 'keep-alive' and 'Keep-Alive' are fine.

Author: Krinkle

test/Unit.php

@@ -9,6 +9,9 @@ function jq_req( $url, array $reqHeaders = [] ) {
 		CURLOPT_RETURNTRANSFER => 1,
 		CURLOPT_FOLLOWLOCATION => 0,
 		CURLOPT_HEADERFUNCTION => function( $ch, $header ) use ( &$resp ) {
+			$caseInsensitiveHeaders = [
+				'connection'
+			];
 			$len = strlen( $header );
 			if ( preg_match( "/^(HTTP\/(?:1\.[01]|2)) (\d{3} .*)/", $header, $m ) ) {
 				$resp['headers'] = [];
@@ -18,6 +21,9 @@ function jq_req( $url, array $reqHeaders = [] ) {
 				if ( count( $parts ) === 2 ) {
 					$name = strtolower( $parts[0] );
 					$val = trim( $parts[1] );
+					if ( in_array( $name, $caseInsensitiveHeaders ) ) {
+						$val = strtolower( $val );
+					}
 					if ( isset( $resp['headers'][$name] ) ) {
 						$resp['headers'][$name] .= ", $val";
 					} else {

test/static-open.php

@@ -31,7 +31,6 @@
 	'connection' => 'keep-alive',
 	'vary' => 'Accept-Encoding, x-cdn-access',
 	'etag' => '"28feccc0-40464"',
-	'expires' => 'Thu, 31 Dec 2037 23:55:55 GMT',
 	'cache-control' => 'max-age=315360000, public',
 	'access-control-allow-origin' => '*',
 	'accept-ranges' => 'bytes',
@@ -46,7 +45,6 @@
 	'connection' => 'keep-alive',
 	'vary' => 'Accept-Encoding, x-cdn-access',
 	'etag' => '"28feccc0-1d20"',
-	'expires' => 'Thu, 31 Dec 2037 23:55:55 GMT',
 	'cache-control' => 'max-age=315360000, public',
 	'access-control-allow-origin' => '*',
 	'accept-ranges' => 'bytes',
@@ -60,7 +58,6 @@
 	'last-modified' => 'Fri, 18 Oct 1991 12:00:00 GMT',
 	'connection' => 'keep-alive',
 	'etag' => '"28feccc0-1111"',
-	'expires' => 'Thu, 31 Dec 2037 23:55:55 GMT',
 	'cache-control' => 'max-age=315360000, public',
 	'access-control-allow-origin' => '*',
 	'accept-ranges' => 'bytes',
@@ -74,7 +71,6 @@
 	'last-modified' => 'Fri, 18 Oct 1991 12:00:00 GMT',
 	'connection' => 'keep-alive',
 	'etag' => '"28feccc0-1ec81"',
-	'expires' => 'Thu, 31 Dec 2037 23:55:55 GMT',
 	'cache-control' => 'max-age=315360000, public',
 	'access-control-allow-origin' => '*',
 	'accept-ranges' => 'bytes',
@@ -93,7 +89,6 @@
 	'connection' => 'keep-alive',
 	'vary' => 'Accept-Encoding, x-cdn-access',
 	'etag' => '"28feccc0-40464"',
-	'expires' => 'Thu, 31 Dec 2037 23:55:55 GMT',
 	'cache-control' => 'max-age=315360000, public',
 	'access-control-allow-origin' => '*',
 	'accept-ranges' => 'bytes',

test/static-strict.php

@@ -40,7 +40,6 @@
 	'connection' => 'keep-alive',
 	'vary' => 'Accept-Encoding, x-cdn-access',
 	'etag' => '"28feccc0-40464"',
-	'expires' => 'Thu, 31 Dec 2037 23:55:55 GMT',
 	'cache-control' => 'max-age=315360000, public',
 	'access-control-allow-origin' => '*',
 	'accept-ranges' => 'bytes',