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When phone power on, it will try to get the following file from the factory config sever path.
1). Factory000x.bin
2). Cfg000x.xml
3). $mac.cfg
4). Cfg$mac
5). Cfg$mac.xml
The factory config server path is: https://rps.htek.com/index.php/fn/g
All the file get info will be send to RPS server:
Get: https://rps.htek.com/index.php/fn/g /factory000x.bin
Get: https://rps.htek.com/index.php/fn/g /cfg000x.bin
Get: https https://rps.htek.com/index.php/fn/g /$mac.cfg
Get: https://rps.htek.com/index.php/fn/g /cfg$mac
Get: https://rps.htek.com/index.php/fn/g /cfg$mac.xml
2.
The RPS server will check the request, if the phone require for cfg$mac and cfg$mac.xml, it will redirect the URL to the one you have set on the server.
In the example, when phone try to visit the url:
https://rps.htek.com/fn/g /cfg001fc11a9664
or https://rps.htek.com/fn/g /cfg001fc11a9664.xml ,
the server will redirect it, response code 302 and the url which has been set before. The example mac have been set point to http://192.168.0.54/cfg
Phone get the response: "====302=====http://192.168.0.54/cfg/cfg001fc11a9664"
And "====302=====http://192.168.0.54/cfg/cfg001fc11a9664.xml"
Then phone will try to get the configuration file through the URL.
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