HTTP header connection failed

[anila_ec21]

When we are trying to run a report in deployment server to get the hosts that are reporting to Splunk, it is giving below error

• Unable to determine response format from HTTP Header
• Connection failed with Read Timeout
• The REST request on the endpoint URI /services/deployment/server/clients?count=0 returned HTTP 'status not OK': code=502, Read Timeout.

Can anyone please suggest any work around.

[dural_yyz]

You can override default timeout inside a rest call - add a timeout=300 and see if that helps.   You more likely are going to run up against a different error but getting past the timeout issue is the first step to find the underlying issue.