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Cache headers should be set explicitly #646

anonymous-piwik-user opened this Issue · 2 comments

2 participants

Anonymous Piwik user Anthon Pang
Anonymous Piwik user

One thing that would be important to ensure accurate numbers is making sure the tracking image isn’t cached. We should send back the following headers:

Cache-Control: private, no-cache, proxy-revalidate Pragma: no-cache

So in core/Tracker.php, maybe do something like:

protected function outputTransparentGif() { if( !isset($GLOBALS[|| !$GLOBALS[‘DEBUGPIWIK’](‘DEBUGPIWIK’])) ) { $trans_gif_64 = “R0lGODlhAQABAIAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==”; header(“Content-type: image/gif”); header(‘Pragma: no-cache’); header(‘Cache-Control: private, no-cache, proxy-revalidate’); print(base64_decode($trans_gif_64)); } }

Anthon Pang

PHP ships with the default headers to not cache.

I agree we should probably set these headers explicitly (instead of assuming the default php configuration).

Anthon Pang

(In [1071]) Fixes #646, setting cache headers explicitly to nocache instead of
assuming PHP default.

Anonymous Piwik user anonymous-piwik-user added this to the Piwik 0.6.1 milestone
This issue was closed.
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