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Background: We use tracking pixels on our site to pass sales data to advertising networks we work with. Some nasty bug is resulting in bad data being recorded by our partners and we are looking for a way to diagnose. Server logs show that we are generating the correct < img > request and we're out of ideas to identify the cause of the bug...

Question: Is there a JavaScript method for sniffing the outbound client-side image requests made on our site? I.e., would it be possible to load a client-side JS that looks for image requests to a particular domain, records those requests and then sends that information to our server?

jonaz
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  • If server logs show that you are generating the correct requests for images, then surely that shows that the problem is on their end? – Jim May 21 '12 at 19:29
  • I would hope so, Jim! Didn't want to confuse things but there's a whole ton of complexity here. I'm actually serving these pixels using a 3rd party tag management SaaS provider which is generating the request using JSON I've exposed in my HTML. My logs show that the JSON is accurate but I still need to determine if the bug is downstream of my SaaS provider (i.e. with the data recipient), my fault or the SaaS provider's bug. – jonaz May 21 '12 at 20:00

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I would use Google Chrome's build in network panel. View->Developer->Developer Tools.

Steve Binder
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  • Yes, precisely. But I need to get the data that shows in the Chrome network panel or Firebug (really just a small part of it) for all visitors on my site. – jonaz May 21 '12 at 19:53