Which HTTP request headers are used by Piwik PRO?

Our API lets you use the following headers:

  • Host: The hostname of the HTTP request or the hostname of the Piwik PRO server.
  • Referrer: Used to track referrer information like website, search engine or social network.
  • User-Agent: Used to detect the information about browsers, operating systems, devices using a device-detector library.
  • Cookie: Used to store opt-out tracking information or when third-party cookies are used.
  • Origin: Used when the cross-origin resource sharing is enabled.
  • Accept-Language: Used to detect the user’s browser language.
  • X-Forwarded-Proto, X-Forwarded-Host, X-Forwarded-For: Used when Piwik PRO is set up behind a proxy or server-side tracking is used.

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