Remove pre-check and post-check from Cache-Control

If both `post-check` and `pre-check` are specified and set to `0`, both
are entirely ignored:

http://blogs.msdn.com/b/ieinternals/archive/2009/07/20/using-post_2d00_check-and-pre_2d00_check-cache-directives.aspx

8 files changed, 9 insertions, 9 deletions

diff --git a/usr/local/captiveportal/index.php b/usr/local/captiveportal/index.php
index 0e65a26..2d256b2 100644
--- a/usr/local/captiveportal/index.php
+++ b/usr/local/captiveportal/index.php
@@ -40,7 +40,7 @@ require_once("captiveportal.inc");
 $errormsg = "Invalid credentials specified.";
 
 header("Expires: 0");
-header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0");
+header("Cache-Control: no-cache, no-store, must-revalidate");
 header("Pragma: no-cache");
 header("Connection: close");
 
diff --git a/usr/local/www/getstats.php b/usr/local/www/getstats.php
index 279aacb..dcbb8d3 100644
--- a/usr/local/www/getstats.php
+++ b/usr/local/www/getstats.php
@@ -39,7 +39,7 @@
 
 header("Last-Modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
 header("Expires: " . gmdate( "D, j M Y H:i:s", time() ) . " GMT" );
-header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0" ); // HTTP/1.1
+header("Cache-Control: no-cache, no-store, must-revalidate" ); // HTTP/1.1
 header("Pragma: no-cache"); // HTTP/1.0
 
 require_once("guiconfig.inc");
diff --git a/usr/local/www/graph.php b/usr/local/www/graph.php
index 6bd8a2b..7862257 100755
--- a/usr/local/www/graph.php
+++ b/usr/local/www/graph.php
@@ -45,7 +45,7 @@ require("guiconfig.inc");
 
 header("Last-Modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
 header("Expires: " . gmdate( "D, j M Y H:i:s", time() ) . " GMT" );
-header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0" ); // HTTP/1.1
+header("Cache-Control: no-cache, no-store, must-revalidate" ); // HTTP/1.1
 header("Pragma: no-cache"); // HTTP/1.0
 header("Content-type: image/svg+xml");
 
diff --git a/usr/local/www/graph_cpu.php b/usr/local/www/graph_cpu.php
index 7fa0225..2258f8a 100644
--- a/usr/local/www/graph_cpu.php
+++ b/usr/local/www/graph_cpu.php
@@ -44,7 +44,7 @@ require_once("guiconfig.inc");
 
 header("Last-Modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
 header("Expires: " . gmdate( "D, j M Y H:i:s", time() ) . " GMT" );
-header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0" ); // HTTP/1.1
+header("Cache-Control: no-cache, no-store, must-revalidate" ); // HTTP/1.1
 header("Pragma: no-cache"); // HTTP/1.0
 header("Content-type: image/svg+xml");
 
diff --git a/usr/local/www/guiconfig.inc b/usr/local/www/guiconfig.inc
index b73ce77..22ca7ba 100644
--- a/usr/local/www/guiconfig.inc
+++ b/usr/local/www/guiconfig.inc
@@ -47,7 +47,7 @@ if(!$nocsrf) {
 if (!$omit_nocacheheaders) {
 	header("Expires: 0");
 	header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
-	header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0");
+	header("Cache-Control: no-cache, no-store, must-revalidate");
 	header("Pragma: no-cache");
 }
 
diff --git a/usr/local/www/ifstats.php b/usr/local/www/ifstats.php
index 5b3c1e8..56c46b4 100644
--- a/usr/local/www/ifstats.php
+++ b/usr/local/www/ifstats.php
@@ -57,7 +57,7 @@
 
 	header("Last-Modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
 	header("Expires: " . gmdate( "D, j M Y H:i:s", time() ) . " GMT" );
-	header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0" ); // HTTP/1.1
+	header("Cache-Control: no-cache, no-store, must-revalidate" ); // HTTP/1.1
 	header("Pragma: no-cache"); // HTTP/1.0
 
 	echo "$timing|" . $ifinfo['inbytes'] . "|" . $ifinfo['outbytes'] . "\n";
diff --git a/usr/local/www/status_queues.php b/usr/local/www/status_queues.php
index fd32348..6b4be32 100644
--- a/usr/local/www/status_queues.php
+++ b/usr/local/www/status_queues.php
@@ -44,7 +44,7 @@
 
 header("Last-Modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
 header("Expires: " . gmdate( "D, j M Y H:i:s", time() ) . " GMT" );
-header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0" ); // HTTP/1.1
+header("Cache-Control: no-cache, no-store, must-revalidate" ); // HTTP/1.1
 header("Pragma: no-cache"); // HTTP/1.0
 
 require("guiconfig.inc");
diff --git a/usr/local/www/status_rrd_graph_img.php b/usr/local/www/status_rrd_graph_img.php
index 4a136ac..74e7d3f 100644
--- a/usr/local/www/status_rrd_graph_img.php
+++ b/usr/local/www/status_rrd_graph_img.php
@@ -1263,7 +1263,7 @@ if(($graphcmdreturn <> 0) || (! $data)) {
 	header("Content-type: image/png");
 	header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
 	header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
-	header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0");
+	header("Cache-Control: no-cache, no-store, must-revalidate");
 	header("Pragma: no-cache");
 	$file= "/usr/local/www/themes/{$g['theme']}/images/misc/rrd_error.png";
 	readfile($file);
@@ -1273,7 +1273,7 @@ if(($graphcmdreturn <> 0) || (! $data)) {
 		header("Content-type: image/png");
 		header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
 		header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
-		header("Cache-Control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0");
+		header("Cache-Control: no-cache, no-store, must-revalidate");
 		header("Pragma: no-cache");
 		readfile($file);
 	}