{actor} created a new topic '...

Hello. I'm writing a client using PyIndi-Client to control a ZWO ASI6200MM Pro. I am using Python package Flask to allow for the exposure info to be sent as a http POST request. The client and indiserver are running on a Raspberry Pi 4. The camera is not attached to any telescope but is connected to the RPi4 via USB. When I send the POST request to take the exposure, the client outputs the following:

2020-07-24 20:46:29,834 new Message 2020-07-24T20:46:29: [INFO] Taking a 10 seconds frame... 
2020-07-24 20:46:29,836 172.19.0.1:59174 POST /elements/1/cameras/1:startExposure 1.1 202 57 9393
[2020-07-24 20:46:29,836] 172.19.0.1:59174 POST /elements/1/cameras/1:startExposure 1.1 202 57 9393
2020-07-24 20:46:40,939 new Message 2020-07-24T20:46:40: [INFO] Exposure done, downloading image... 
2020-07-24 20:46:41,064 new Message 2020-07-24T20:46:41: [INFO] Download complete. 
2020-07-24 20:46:41,066 new Message 2020-07-24T20:46:41: [WARNING] Telescope focal length is missing. 
2020-07-24 20:46:41,067 new Message 2020-07-24T20:46:41: [WARNING] Telescope aperture is missing. 
INDI server indiserver/7624 disconnected.
2020-07-24 20:46:43,274 Server disconnected (exit code = -1,indiserver:7624)

In case it is relevant to know, here is the simple script to send the request:

import requests

url = 'http://localhost:9001/elements/1/cameras:startExposure'
data = {'exposure':10}

x = requests.post(url, json = data)

print(x.text)

I have copied code from www.indilib.org/develop/indi-python-bindings.html to print out BLOB information after the exposure is taken, but this is obviously not printed before the indiserver disconnects, so it seems the problem happens after the exposure is taken but before the indiserver receives the BLOB. I am hoping someone can explain what the error code -1 means (I have been unable to find any documentation of indiserver error codes) and tell me if there is some way to fix this problem. Thank you.

Read More...