Signature error if model ID in request contains a colon (AWS Bedrock)

[keyfayaz]

Description

We're making a request to AWS bedrock's converse endpoint using AWSSigV4Signer and AWSHttpRequest in Flutter. When the Model ID contains a colon (i.e., anthropic.claude-v2:1 or cohere.command-r-v1:0), the response is as follows:

"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details."

The response is correct for models without a colon (i.e., amazon.titan-text-express-v1 or anthropic.claude-v2).

Categories

• Analytics
• API (REST)
• API (GraphQL)
• Auth
• Authenticator
• DataStore
• Notifications (Push)
• Storage

Steps to Reproduce

1. Create signed http request to to AWS Bedrock's converse endpoint
2. Configure different model IDs to test (e.g., anthropic.claude-v2, anthropic.claude-v2:1)
3. Configure the payload for the request
4. Send the request; observe response for the different models

Platforms

• iOS
• Android
• Web
• macOS
• Windows
• Linux

Flutter Version

3.24.0

Amplify Flutter Version

• aws_common: ^0.7.1
• aws_signature_v4: ^0.6.1

[keyfayaz]

Seems to be working with doubleEncodePathSegments set to false in the serviceConfiguration of the signer. Would be nice if this was exposed/obvious at the higher level.

[github-actions]

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