Hello we are trying to run prefect agent behind a proxy and

Question

Hello we are trying to run prefect agent behind a proxy and encounter this ```Error downloading Flow from Azure Cannot connect to proxy ConnectionResetError 10054 An existing connection was forcibly closed by the remote host None 10054 None ``` Following env vars are set ```HTTPS PROXY=x x x x AZURE STORAGE CONNECTION STRING=xxxx``` We can connect to blob should just fine using `az` Any pointer

Kevin Kho · Answer

Hmm I don t have a good suggestion but I guess a quick test is to see if you can hit the Prefect API For example ```import requests query = flow id name response = url= headers=dict authorization=f Bearer API KEY print response status code print response text ``` and maybe it will have more details in the traceback

Anna Geller · Answer

You may need to add it to trusted hosts

Dung Khuc · Answer

< Kevin Kho> I m not very familiar with graphql should I pass `query` value to `data` param in `` I got POST body missing Did you forget use body parser middleware

Dung Khuc · Answer

< Anna Geller> can you elaborate what should I add to trusted hosts

Kevin Kho · Answer

whoops

Kevin Kho · Answer

```response = url= json=dict query=query headers=dict authorization=f Bearer API KEY ```

Dung Khuc · Answer

`status code` is 200 and `response text` returns list of flows

Dung Khuc · Answer

from the log I think the agent can connect to prefect but it cannot fetch the flow from blob storage ```9 June 2022 09 14 31 agent INFO Submitted for execution PID 8472 9 June 2022 09 14 32 prefect Azure INFO Downloading azure flow 2022 06 09t17 19 17 739489 00 00 from cdp prefect agent1 9 June 2022 09 15 57 prefect Azure ERROR Error downloading Flow from Azure Cannot connect to proxy ConnectionResetError 10054 An existing connection was forcibly closed by the remote host None 10054 None 9 June 2022 09 15 58 execute flow run ERROR Failed to load and execute flow run ServiceRequestError Cannot connect to proxy ConnectionResetError 10054 An existing connection was forcibly closed by the remote host None 10054 None ```

Dung Khuc · Answer

I looked into prefect s `Azure` storage source code and wrote a separate python script with similar code to download from blob the script works fine

Kevin Kho · Answer

I guess the question is if both the place you tested and the agent run with the same settings

Dung Khuc · Answer

yes I tested that in the same VM that I run agent in

Dung Khuc · Answer

same env vars and everything

Dung Khuc · Answer

I figured this out It s my mistake specifying the connection string env var when creating windows service It doesn t like ` ` enclosure

Kevin Kho · Answer

Ahh glad you got it figured out

Dung Khuc · Answer

Thanks a lot for helping The last comment raise my suspicion to check how windows service env var works