This example shows how to retrieve property meta data from 51Degrees on-premise device detection. This feature can be used to get information such as the category that a property belongs to or the possible values a property can have. (As of the current data file. If the data file is updated, the possible values for a property can change)

This example is available in full on GitHub.

This example requires a local data file. The free 'Lite' data file can be acquired by pulling the git submodules under this repository (run `git submodule update --recursive`) or from the device-detection-data GitHub repository.

The Lite data file is only used for illustration, and has limited accuracy and capabilities. Find out about the more capable data files that are available on our pricing page

The path to the data need to be updated before running the example.

In a Linux environment, the following commands:

$ curl localhost:8080 -I -A "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36"

Expected output:

HTTP/1.1 200 OK

...

X-Metadata: False,55,0,0,PERFORMANCE,__zilla/5.0 (Windows____10.0; Win6_______________________________________________Chrome/7_.0.3904__7 Safari/5_____,23,15364-38914-97847-0

vcl 4.0;

import fiftyonedegrees;

backend default {

.host = "127.0.0.1";

.port = "80";

}

sub vcl_deliver {

set resp.http.X-IsMobileX = fiftyonedegrees.match_all("IsMobile,Iterations,Drift,Difference,Method,UserAgents,MatchedNodes,DeviceId");

}

sub vcl_init {

fiftyonedegrees.start("/etc/varnish/51Degrees-LiteV4.1.hash");

}

51Degrees Device Detection Varnish 4.4

hash/metadata.vcl