When transmitting the information about the "X-WT-..." URL parameters, the values UTF-8 must be transmitted encoded.

Usually, the IP address of the user is available through the TCP/IP connection directly at the tracking system. If the requests are not transmitted directly to the tracking system via the users, the IP address can also be transmitted as URL parameter ("X-WT-IP") in the Pixel URL or in the Request Header ("X-WT-IP").

Example request 

http://track.webtrekk.net/111111111111111/wt?p=300,home&X-WT-IP=212.5.8.2
JS

The browser identification is usually transmitted in the request header ("user agent"). It is also possible to transmit the browser ID as URL parameter ("X-WT-UA") in the Pixel URL or in the Request Header ("X-WT-UA").

Example request 

http://track.webtrekk.net/111111111111111/wt?p=300,home&X-WT-UA=Mozilla%2F5.0%20(Windows%20NT%2010.0%3B%20WOW6%3B%20rv%3A46.0)%20Gecko%2F20100101%20Firefox%2F46.0
JS

The URL of the currently called page is usually transmitted via the request header ("referrer"). The URL can also be transmitted as URL parameter ("X-WT-RQ") in the Pixel URL or in the Request Header ("X-WT-RQ").

Example request 

http://track.webtrekk.net/111111111111111/wt?p=300,home&X-WT-RQ=https%3A%2F%2Fsub.domain.tld%2Fhome.html
JS

The referrer of the page and the URL of the current page must not be the same, otherwise no referrer will be evaluated.