Good Afternoon, 

Everything working apart from ONVIF events subscription on my Tapo C500.

I have been attempting to use Zoneminder V1.37.60 for ONVIF motion events detection. 

The zoneminder logs show the following entry: ONVIF Couldn't create subscription! (null), null

I tried using ODM, live streaming works, but get the following error on Events: 
 

When attempting to use Curl to connect to the Onvif service and getting an empty response:

gary@ZoneMinder:~$ curl http://192.168.1.238:2020/onvif/device_service
curl: (52) Empty reply from server


Also tried this bash script:

 

#!/bin/bash

# Camera IP address and port
CAMERA_IP="192.168.1.238"
CAMERA_PORT="2020"

# Camera credentials
USERNAME="REDACTED"
PASSWORD="REDACTED"

# ONVIF Event Subscription XML
SUBSCRIBE_XML="<?xml version=\"1.0\" encoding=\"UTF-8\"?> \
<env:Envelope xmlns:env=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:wsa=\"http://www.w3.org/2005/08/addressing\"> \
  <env:Body> \
    <wsa:Subscribe> \
      <wsa:InitialTerminationTime>PT2M</wsa:InitialTerminationTime> \
      <wsa:ReferenceParameters> \
        <wsa:Callback>http://${CAMERA_IP}/Events</wsa:Callback> \
      </wsa:ReferenceParameters> \
      <wsa:Filter> \
        <wsa:TopicExpression>Detection</wsa:TopicExpression> \
      </wsa:Filter> \
    </wsa:Subscribe> \
  </env:Body> \
</env:Envelope>"

# Send the subscription request
curl -X POST \
  http://${CAMERA_IP}:${CAMERA_PORT}/onvif/device_service/Events \
  -u ${USERNAME}:${PASSWORD} \
  -H "Content-Type: application/soap+xml" \
  -d "${SUBSCRIBE_XML}"

And this is the relevant part of the reply I got: 

ter:NotAuthorized
Authority failure

The camera account username and password works perfectly for the stream. 
Are Onvif events broken for this firmware? (ver 1.1.3)

Thanks in advance.