Node-red on ppp connection

General
1

Hi,
I have a node-red setup on a raspberry pi.
when running on wlan it works fine... collects data and drops it of on google firestore

when I disconnect wlan, and setup a connection via ppp (gprs connection) data does not arrive.

the raspberry can still ping www.google.com, but it stops dropping data to firestore.

am I doing something wrong when running node-red-start?

2

Just as an experiment, does it work if you restart node-red after switching the connections?

3

No,

The raspberry can ping, I can do wget, node-red can even ping and output to console, but it stops delivering data to firebase.

4

It sounds like something is blocking the firebase comms somewhere. I read somewhere that it uses websockets (though that may not be correct), perhaps they are blocked. What node are you using for firebase?

5

so this is odd...
first of all, it turns out it has nothing to do with node-red.

I wrote a quick nodejs app, and am running it on the raspberry... when it is connected via wlan, it updates a document on firestore

when i disconnect wlan, and start up ppp i get the same error here....

UnhandledPromiseRejectionWarning: Error: 4 DEADLINE_EXCEEDED: Deadline exceeded

i can ping

i can do a : wget www.google.com (page downloads)

i can not do a firestore.db.set ....

:frowning: Dangit

1 Like
6

That is not surprising. As I suggested, probably something is blocking the comms via that route. Possibly because it is websocket (if it is) but that is pure conjecture without knowing anything about firebase.

7

damn you internet!! - Thanks Colin for the pointer!!

Routing is not my strongsuit - and its not related to this channel :frowning:

but... would your guess be that there should be a routing solution for this, or am I better off looking at creating some sort of webhook endpoint (which I CAN access now) and then let that endpoint handle the firebase bits?

a quick google on "gprs ppp websocket debian" does not point me in any direction.

Thanks :slight_smile:

8

I am out of my comfort zone I am afraid.
@dceejay can you throw any light on what this problem might be? It isn't node-red it is something to do with the connection. I don't know how to debug it.

9

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