Please update presigned URL documentation

[Basil-P]

Please could you amend the Boto3 documentation regarding Presigned URL's. The documentation does not mention the problem raised by issue #2728 - Uploading files using presigned url in af-south-1 #2728

The existing documentation relating to Presigned URL does not mention the addition of endpoint_url="" for any region launched after March 20, 2019 such as af-south-1.

eg.. s3_client = boto3.client('s3', region_name='af-south-1', endpoint_url='https://s3.af-south-1.amazonaws.com')
Not specifying this parameter will continue to generate the "IllegalLocationConstraintException" error. We are using the latest version of boto3-1.17.71 botocore-1.20.71

In issue #2728 https://github.com/swetashre mentions the solution and reasoning for this.

For all Regions that launched after March 20, 2019, if a request arrives at the wrong Amazon S3 location, Amazon S3 returns an HTTP 400 Bad Request error. Basically this means s3 region re-director won't work for region launched after march 20, 2019. That's why when you are specifying the exact endpoint_url it works. I hope it helps. Please let me know if you have any more questions.

https://boto3.amazonaws.com/v1/documentation/api/latest/guide/s3-presigned-urls.html

I've lost 3 days of my life with this issue :-)

[kdaily]

Hi @Basil-P, thanks for bringing this up. I'll review this with the docs writers.

[Basil-P]

Thank you Kenneth.

[jthomas]

👍 on this. I've spent a day or so debugging this confusing "feature". I couldn't find any other information as to why this was happening until I found this issue. Thanks to @Basil-P for this turning up in Google and saving me a tonne of time...

[tim-finnigan]

P53115231

[tim-finnigan]

The S3 team update their documentation here to add that warning. It's also here in request routing documentation. Marking this as resolved.

[github-actions]

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