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Re: GPS data from multiple android GPS sources over UDP

From: Debashisha Mishra
Subject: Re: GPS data from multiple android GPS sources over UDP
Date: Tue, 18 Apr 2023 14:39:23 +0200 (CEST)

Hi Ken,

Thank you for your email. I didn't understand your point and how to achieve that with GPSD.
Could you please explain with some hints/commands on how do I put two different ports on the host computer that runs the GPSD daemon and gather the segregated GPS data? Thank you.

Best Regards,

----- On Apr 18, 2023, at 3:23 PM, Ken Hendrickson <> wrote:

Use different ports for each different phone?


From: <> On Behalf Of Debashisha Mishra
Sent: Tuesday, April 18, 2023 2:56 AM
Subject: [EXTERNAL] GPS data from multiple android GPS sources over UDP


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Dear Team,


Thank you for this nice tool. I came across this tool while investigating a need to send the GPS data from an android phone to the host computer over WiFi network. The corresponding steps are similar to ones described here.

Now, my setup include one android phone with GPSd Forwarder app that streams the GPS data to the host computer IP and port.

The command I use on the host computer is "gpsd -N udp://*:12345". Everything works fine and I could see the GPS data in the host computer using gpsmon.


My question is the following. I want to send the GPS data from multiple android phones to the host computer in the same way I explained earlier. I used the above method and install the GPS forwarder android app on two phones. 

However, I could not know which GPS data is coming from which android phone and how can I segregate the GPS sources (the android phones) in the host computer. Basically I want to save the GPS data separately for each of these android sources.


I tried with "gpsd -N udp://<phone-ip>:12345" command on the host computer to listen from the particular phone IP. I could NOT make it work. Sorry.


Kindly suggest and help me. Thank you very much.


Best Regards,





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