Re: gpsd Reliable and resilient tcp feed

[Gary E. Miller]

Yo Nick!

On Thu, 30 Sep 2021 12:45:02 +0100
Nick Taylor <nicktaylor@dataskill.uk> wrote:

> We need to use tcp feed into gpsd - our customer is providing the
> feed so udp not really an option.

Many other options beyond udp.  How many serial and USB ports does your
GNSS receiver have?

> Requirement is for reliable and resilient tcp feed to gpsd. Currently
> it doesn't do very well if feed gets interrupted - either by restart
> of the feed or if we block the connection for a while with iptables
> to simulate interrupted feed.

Yup.  Nothing new there.  gpsd does not do any reconnect.

> I realise that gpsd is a complex beast and our guy hasn't yet come up 
> with working solution - we keep getting bad side effects like gpsd 
> failing to respond to client connects and broken shm ntp feed

Yup, as I warned you about your code.

> Any gpsd gurus here interested in some contract work - or can anyone 
> point us to someone who could help??

I have been known to accept contracts to add gpsd features.  I might have
already added NTRIP reconnect, except I've never seen NTRIP add any
precision.  So why bother?

Can you demonstarte that your NTRIP feed improves your precision?

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

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    "If you can't measure it, you can't improve it." - Lord Kelvin

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