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haproxy/doc/DeviceAtlas-device-detection.txt
David Carlier e0724580d3 DOC: DeviceAtlas documentation typo fix.
The USE_PCRE syntax was incorrect. No backport needed.
2021-02-19 18:02:25 +01:00

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DeviceAtlas Device Detection
----------------------------
In order to add DeviceAtlas Device Detection support, you would need to download
the API source code from https://deviceatlas.com/deviceatlas-haproxy-module.
The build supports the USE_PCRE and USE_PCRE2 options. Once extracted :
$ make TARGET=<target> USE_PCRE=1 (or USE_PCRE2=1) USE_DEVICEATLAS=1 DEVICEATLAS_SRC=<path to the API root folder>
Optionally DEVICEATLAS_INC and DEVICEATLAS_LIB may be set to override the path
to the include files and libraries respectively if they're not in the source
directory.
For HAProxy developers who need to verify that their changes didn't accidentally
break the DeviceAtlas code, it is possible to build a dummy library provided in
the contrib/deviceatlas directory and to use it as an alternative for the full
library. This will not provide the full functionalities, it will just allow
haproxy to start with a deviceatlas configuration, which generally is enough to
validate API changes :
$ make TARGET=<target> USE_PCRE=1 USE_DEVICEATLAS=1 DEVICEATLAS_SRC=$PWD/contrib/deviceatlas
These are supported DeviceAtlas directives (see doc/configuration.txt) :
- deviceatlas-json-file <path to the DeviceAtlas JSON data file>.
- deviceatlas-log-level <number> (0 to 3, level of information returned by
the API, 0 by default).
- deviceatlas-property-separator <character> (character used to separate the
properties produced by the API, | by default).
Sample configuration :
global
deviceatlas-json-file <path to json file>
...
frontend
bind *:8881
default_backend servers
There are two distinct methods available, one which leverages all HTTP headers
and one which uses only a single HTTP header for the detection. The former
method is highly recommended and more accurate. There are several possible use
cases.
# To transmit the DeviceAtlas data downstream to the target application
All HTTP headers via the sample / fetch
http-request set-header X-DeviceAtlas-Data %[da-csv-fetch(primaryHardwareType,osName,osVersion,browserName,browserVersion,browserRenderingEngine)]
Single HTTP header (e.g. User-Agent) via the converter
http-request set-header X-DeviceAtlas-Data %[req.fhdr(User-Agent),da-csv-conv(primaryHardwareType,osName,osVersion,browserName,browserVersion,browserRenderingEngine)]
# Mobile content switching with ACL
All HTTP headers
acl is_mobile da-csv-fetch(mobileDevice) 1
Single HTTP header
acl device_type_tablet req.fhdr(User-Agent),da-csv-conv(primaryHardwareType) "Tablet"
Please find more information about DeviceAtlas and the detection methods at https://deviceatlas.com/resources .