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-rw-r--r--program/include/rcube_shared.inc6
1 files changed, 4 insertions, 2 deletions
diff --git a/program/include/rcube_shared.inc b/program/include/rcube_shared.inc
index 79526277d..7bb47a5f0 100644
--- a/program/include/rcube_shared.inc
+++ b/program/include/rcube_shared.inc
@@ -39,14 +39,16 @@ function send_nocacheing_headers()
header("Expires: ".gmdate("D, d M Y H:i:s")." GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
- header("Cache-Control: private, no-cache, must-revalidate, post-check=0, pre-check=0");
- header("Pragma: no-cache");
// Request browser to disable DNS prefetching (CVE-2010-0464)
header("X-DNS-Prefetch-Control: off");
// We need to set the following headers to make downloads work using IE in HTTPS mode.
if ($OUTPUT->browser->ie && rcube_https_check()) {
header('Pragma: private');
+ header("Cache-Control: private, must-revalidate");
+ } else {
+ header("Cache-Control: private, no-cache, must-revalidate, post-check=0, pre-check=0");
+ header("Pragma: no-cache");
}
}