Host – the hostname of the HTTP request, the hostname of the Piwik PRO server;
Referrer – used to track Referrer information such as website, search engine, social network;
User-Agent – used to detect the information about browsers, operating system, devices by device-detector library;
Cookie – when Opted-out from tracking, or when Third party cookies are used;
Origin – used when cross-origin resource sharing is enabled;
Accept-Language – used to detect the users’ language;
X-Forwarded-Proto, X-Forwarded-Host, X-Forwarded-For – when Piwik PRO is set up behind a proxy;
DNT – used to detect whether a visitor’s device is opted-out from tracking.
Which HTTP request headers are used by Piwik PRO?
June 6, 2018
When measuring activity with the Piwik PRO tracking API, the following HTTP headers may be used: