Unable to connect to Cloudflare R2 owing to lack of ability to change region

[seanvelasco]

Describe the bug
I'm trying to connect to an R2 bucket with Cyberduck using the Cloudflare R2 profile. However, I'm greeted with the following error:

The region name 'ap-southeast-1' is not valid. Must be one of: wnam, enam, weur, eeur, apac, auto. Please contact your web hosting service provider for assistance.

When I open the Cyberduck's settings (Settings > S3 > Default Bucket Location), I can change the region, and I can confirm the change is reflected, however the options enam, weur, eeur, apac, auto are not available.

To Reproduce
Steps to reproduce the behavior:

1. Install Cloudflare R2 profile
2. Use Cloudflare R2 bucket credentials and add bucket name as path
3. Attempt to establish connection
4. The above error is shown

Expected behavior
A clear and concise description of what you expected to happen.

Desktop (please complete the following information):

• OS: MacOS 15.0 (24A335)
• Version 9.0.2 (42108)

Additional context
When connecting using boto3, the same error is shown when using "auto", "ap-southeast", or any other regions other than enam, weur, eeur, apac, auto. In my case, when I used apac instead of ap-southeast, the error disappeared. So I believe the ability to change the region in the client will fix the issue.

[dkocher]

I cannot reproduce. What region is the bucket in you are testing with?

[seanvelasco]

hi, the region i set when i created the bucket was Asia-Pacific (APAC) or apac. in the Cyberduck client, the region in the S3 settings is set to Asia Pacific (Singapore) or ap-southeast-1.

i think the error is thrown when the region is not one of these enam, weur, eeur, apac, auto.

alternatively, can i change the region in my Cyberduck? when inspecting the .cyberduckprofile XML file, i found these options

<key>Regions</key>
        <array>
            <string>wnam</string>
            <string>enam</string>
            <string>weur</string>
            <string>eeur</string>
            <string>apac</string>
        </array>

but i couldn't find these options in the Cyberduck client at all. i just found these:

[mojopollo]

@dkocher I am also getting this exact issue when creating a new connection profile using the "Cloudflare R2 Storage (S3)" profile with mac version 9.0.4, 9.0.2, 9.0.1

Cloudflare R2 uses the following regions
https://docs.cyberduck.io/protocols/s3/cloudflare/

APAC (Asia Pacific)
EEUR (Eastern Europe)
ENAM (Eastern North America)
WEUR (Western Europe)
WNAM (Western North America)

But Cyberduck is defaulting to the AWS S3 region specified here instead:

If I change the default bucket location from "US West Oregon" to "US West (Northern California)" , the error appears with "us-west-1" not being a valid region.

I cannot set the default bucket location to WNAM which is where my bucket is.

Also worth nothing, I had previous Cloudflare connection setup some months ago using the "Cloudflare R2 Storage (S3)" profile, that old connection setting can connect just fine to cloudflare R2 and I can even duplicate that connection and use that as a template for any new buckets I want to connect to and it works.

[dkocher]

I can confirm this issue. When you have previously successfully connected to a single bucket with the default region in Preferences → S3 set to us-east-1, the location returned from the ?location query for the bucket will be persisted in the bookmark.

The issue here occurs because the Cloudflare R2 profile is missing a Region override ¹.

For S3, this value is used for AWS4 signatures when no location can be deferred from the URI for third-party S3 providers.

Footnotes

1. https://docs.cyberduck.io/protocols/profiles/#technical-file-format-specification ↩