no_proxy environment variable is not respected about aws-sdk-net HOT 9 CLOSED

@slinkymanbyday The fix for this has been released in AWSSDK.Core Version 3.7.304.13. Will close the issue for now. Thanks for reporting the issue!

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thanks for the fix @peterrsongg

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I believe the answer is yes, but are you using the AWSPowerShell module (it's the one installed by default on all Windows-based AMIs)? The commit you linked didn't include no_proxy, but in newer versions of .NET the HTTP client automatically picks up the environment variable. This is unfortunately not the case for the .NET Framework (which is the target used by AWSPowerShell).

If I try your example using the AWSPowerShell.NetCore module instead (which offers the same functionality as AWSPowerShell), the no_proxy values work as expected. Updating your environment to use that package (or even AWS.Tools, which has a separate module for each service) should unblock you.

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I have created a PR to no_proxy support for the SDK. We will work on getting this merged and released. #3200

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Thanks for the quick response and PR for this issue.
Might not be the right place to ask, but any idea when this will be released and land in Powershell tools?

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@slinkymanbyday Version 4.1.525 of the PowerShell modules went out about an hour ago which contains the latest version of the AWS .NET SDK with this fix.

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Hi @normj and @dscpinheiro

Thought this was good since a couple of my tests seemed to work, but wondering what the implementation of the no_proxy matching here is, since it seems to be failing when chatting to s3 buckets.

https://github.com/aws/aws-sdk-net/blob/main/sdk/src/Core/Amazon.Util/Internal/_bcl/NoProxyFilter.cs#L54
This seems to put together a regex which matches the entire domain, however from my understanding most implemntations do suffix matching. ie, if an entry in the no_proxy list is a suffix match for the requested domain, then don't use the proxy.

For example, i have s3.ap-southeast-2.amazonaws.com in my no_proxy list. This works fine with cli tools when copying a file from a bucket (aws s3 cp ...). However with powershell tools, this doesn't work, as the requested domain is <bucket>.s3.ap-southeast-2.amazonaws.com .

my question is, is there a way I can make my no_proxy list compatible with CLI tools and powershell tools? It doesn't appear so with the current implementation. I'm wondering if NoProxyFilter needs ot be modified to just be a simple suffix match instead?

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