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How do HeartBeatTimer work? #11808

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larsnystrom opened this issue Jun 20, 2017 · 2 comments
Closed

How do HeartBeatTimer work? #11808

larsnystrom opened this issue Jun 20, 2017 · 2 comments
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not-in-changelog For issues or pull requests that should not be included in our release changelog on matomo.org.

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@larsnystrom
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larsnystrom commented Jun 20, 2017 •
edited

Maybe I'm just missing something obvious, but in that case I hope this ticket can lead to a documentation fix.

I'm trying to enable heart beat timer. Here's the script I've added to the top of my page:

    <script type="text/javascript">
            var _paq = _paq || [];
            /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
            _paq.push(['trackPageView']);
            _paq.push(['enableHeartBeatTimer', 10]);
            _paq.push(['enableLinkTracking']);
            (function() {
                    var u=<?= json_encode($this->piwikUrl) ?>;
                    _paq.push(['setTrackerUrl', u+'piwik.php']);
                    _paq.push(['setSiteId', '1']);
                    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
                    g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
            })();
    </script>

I was under the impression that the heart beat timer would send an xhr request every 10 seconds, but after opening the page and keeping it open for >30 seconds no additional requests have been made, besides the normal page tracking request.

Is this a bug, a misconfiguration or a misunderstanding? I'm using Piwik 3.0.4.
@larsnystrom larsnystrom changed the title HeartBeatTimer does not work How do HeartBeatTimer work? Jun 20, 2017
@tsteur
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tsteur commented Jun 21, 2017

Maybe the browser window doesn't have focus. Make sure the browser tab has focus and not eg dev tools.

larsnystrom added a commit to larsnystrom/developer-documentation that referenced this issue Jun 22, 2017
@larsnystrom
Note concerning testing of heartbeattimer, see matomo-org/matomo#11808
20da18d
@larsnystrom
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Ah, that was it! Thank you! Could we possibly add a note of some sort to the documentation, like:

Note: When testing the heart beat timer, remember to make sure the browser tab has focus and not e.g. dev tools.

Of course, one could infer this from the current documentation, but I think explicitly mentioning dev tools could help others like me. I'll create a PR. You can reject it if you just think I'm stupid.

@larsnystrom larsnystrom mentioned this issue Jun 22, 2017
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mattab pushed a commit to matomo-org/developer-documentation that referenced this issue Jun 22, 2017
@larsnystrom @mattab
Note concerning testing of heartbeattimer, see matomo-org/matomo#11808 (
6526c70 
#185)

* Note concerning testing of heartbeattimer, see matomo-org/matomo#11808

* Update tracking-javascript-guide.md
@mattab mattab added the not-in-changelog For issues or pull requests that should not be included in our release changelog on matomo.org. label Sep 11, 2017
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