HTTP integration not working in Chirpstack V4

ChirpStack (v4)
1

Sorry for posting this here again, but I feel a little ignored with my first post about HTTP integration problems.
Maybe this is the better category for it.

I am using Datacake as HTTP integration on Chirpstack V3 without problems.

Datacake URL used in the integration is https://api.datacake.co/integrations/lorawan/chirpstack/

But after upgrading to Chirpstack V4 I am getting this error in the log:

Sep 26 10:04:21 vmi80688.contaboserver.net chirpstack[2042]: Sep 26 10:04:21.596 ERROR up{deduplication_id=909e37b1-2204-4b8d-bf72-b87c961ae26b}:data_up: chirpstack::integration::http: Posting event failed event=up url=https://api.datacake.co/integrations/lorawan/chirpstack/ error=HTTP status client error (400 Bad Request) for url (https://api.datacake.co/integrations/lorawan/chirpstack/?event=up)

The URL is the same I use on V3.

When I change the URL (take away the tailing /) the error message changes to

Sep 26 10:09:51 vmi80688.contaboserver.net chirpstack[2042]: Sep 26 10:09:51.684 ERROR up{deduplication_id=d572de12-14ac-41fb-a8d1-ddc74f57019f}:data_up: chirpstack::integration::http: Posting event failed event=up url=https://api.datacake.co/integrations/lorawan/chirpstack error=HTTP status client error (405 Method Not Allowed) for url (https://api.datacake.co/integrations/lorawan/chirpstack/?event=up)

Anyone knows why?

The log output in Chirpstack V3 shows the same URL and it works

Sep 26 16:17:44 Chirpstack chirpstack-application-server[550]: time=“2022-09-26T16:17:44.204661714+08:00” level=info msg=“integration/http: publishing event” ctx_id=e5845d07-b28d-442d-8ab4-7558133dcd4a dev_eui=ac1f09fffe03b855 event_type=up url=“https://api.datacake.co/integrations/lorawan/chirpstack/?event=up”

Tried Ubidots, worked on V3 as well, but now gives as well error message:

Sep 26 10:52:25 vmi80688.contaboserver.net chirpstack[1682]: Sep 26 10:52:25.115 INFO up{deduplication_id=1f072b63-2c0b-4329-9de7-425ffcb28730}:data_up: chirpstack::integration::http: Posting event event=up url=https://parse.ubidots.com/prv/rakstars/beegee-chirpstack

Sep 26 10:52:25 vmi80688.contaboserver.net chirpstack[1682]: Sep 26 10:52:25.617 ERROR up{deduplication_id=1f072b63-2c0b-4329-9de7-425ffcb28730}:data_up: chirpstack::integration::http: Posting event failed event=up url=https://parse.ubidots.com/prv/rakstars/beegee-chirpstack error=HTTP status server error (502 Bad Gateway) for url (https://parse.ubidots.com/prv/rakstars/beegee-chirpstack?event=up)
2

Please note that in v4, the JSON format of the integrations is slightly different from v3, which could explain the “400 Bad Request” error.

3

You mean all HTTP integrations are broken now and the integration providers like Datacake, Ubidots, … have to change their interface ???

4

If they rely on the ChirpStack v3 format, then yes there are some changes required at their side (or an option to choose which version is used).

A better way would be to create a dedicated integration within ChirpStack. That way, the JSON output can be made specific for an external service and a major version. See for example the Pilot Things integration: https://github.com/chirpstack/chirpstack/blob/master/chirpstack/src/integration/pilot_things.rs#L122.

1 Like
5

Thanks for confirming. I am approaching Datacake right now.

About the dedicated integration, I speak some languages like C, C++, a little bit of assembler, but I have no idea what that code is doing or how to change it.

6

@brocaar
Thanks for pointing me to the changed integration packet format.
Datacake.io is now working with Chirpstack V4. I was talking with them and they could solve it within a day.

1 Like
7

Minor correction, suffix is CO not IO, link should be https://datacake.co/

8

Update on datacake working with chirpstack v4. Downlinks are still not working. I’ve contacted them and they should be fixing it at some point.

9

@diggerdata hello, do you know if there are any news on downlink issue? I faced same problem, Uplink to DataCake works, but I do not see Downlink on ChirpStack (V4) side.

10

No update. They seem to have gone radio silent. A downlink is made but for port 0 and with no payload.

11

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