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{Core} Make the recommendation for SSLError more accurate#27857

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jiasli:sslerror
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{Core} Make the recommendation for SSLError more accurate#27857
jiasli wants to merge 1 commit intoAzure:devfrom
jiasli:sslerror

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@jiasli jiasli commented Nov 16, 2023

Description
#11093 added recommendation for requests.exceptions.SSLError. However, not all SSLErrors are caused by untrusted self-signed certificate. For example, when a firewall blocks https://management.azure.com/, an requests.exceptions.SSLError will be raised:

$ PYTHONPATH="/lib64/az/lib/python3.9/site-packages" python3.9 -c "import requests; print(requests.get('https://management.azure.com/').status_code)"
...
requests.exceptions.SSLError: HTTPSConnectionPool(host='management.azure.com', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1129)')))

This PR refines the recommendation message to make it more accurate.

Testing Guide
TBD

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️✔️AzureCLI-BreakingChangeTest
️✔️Non Breaking Changes

@microsoft-github-policy-service microsoft-github-policy-service bot added Auto-Assign Auto assign by bot Core CLI core infrastructure labels Nov 16, 2023
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yonzhan commented Nov 16, 2023

Core

'Please add this certificate to the trusted CA bundle. More info: https://docs.microsoft.com/cli/azure/use-cli-effectively#work-behind-a-proxy.')
SSLERROR_TEMPLATE = ('An SSL error occurred. This typically happens when using Azure CLI behind a proxy or firewall. '
'For more information, see: '
'https://learn.microsoft.com/cli/azure/use-cli-effectively#work-behind-a-proxy')
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Can we distinguish the firewall error and certificate error further based on error message?

The certificate error is Caused by SSLError(SSLCertVerificationError.
The firewall error is Caused by SSLError(SSLEOFError. In this case, we can suggest users adding endpoints to allowlist: https://learn.microsoft.com/en-us/cli/azure/azure-cli-endpoints?tabs=azure-cloud

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@jiasli jiasli Nov 24, 2023

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To some extent, firewall is a special type of proxy. I think we can elaborate it in the doc, but keep the error message simple.

Also, I think SSLEOFError is only one type of SSLError caused by firewall. There may be other firewalls out there causing other SSLErrors. Capturing the base SSLError covers more scenarios.

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