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Cache headers should be set explicitly #646

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anonymous-piwik-user opened this Issue · 2 comments

2 participants

@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)); } }

@robocoder
Collaborator

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).

@robocoder
Collaborator

(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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