I notice my HTC Desire fetches http://xtra3.gpsonextra.net/xtra.bin when it boots (and before I enter the PIN).

What is that ?

Here's the HTTP Request sent:

GET /xtra.bin HTTP/1.1
Accept: */*, application/vnd.wap.mms-message, application/vnd.wap.sic
x-wap-profile: http://www.openmobilealliance.org/tech/profiles/UAPROF/ccppschema-20021212#
Host: xtra3.gpsonextra.net
Connection: Keep-Alive
User-Agent: Android
  • I just noticed today that gpsonextra.net resolves to qualcomm.cn , when requested via a web browser. Strange. – Marcel Aug 29 '18 at 19:14
  • Not strange at all: GpsOneXtra is Qualcomm's implementation of using aGPS. – TJJ Jun 6 at 16:15

That is done by gpsd. The XTRA files are the current GPS Almanac. The location of where to download the XTRA files to is defined in /system/etc/gps.conf.

These files contain data that speed up the GPS, which will result in faster GPS position fixes.

  • I noticed my moto e is making this request, but i dont know if my data provider has blocked this dns and the request is not been resolved. Since i can only wireshark while the device is connected to wifi, i'm not able to make a tcp dump or something like that while the device is on mobile network to know if the request is getting unresolved. Any thoughts? – AXSM Oct 15 '15 at 23:06
  • Do you have any idea whats going on? in my case. – AXSM Oct 19 '15 at 16:19
  • I Post a question here – AXSM Oct 19 '15 at 17:47

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