Data race warning from Xcode for HttpResponse.statusCode.

[sichanyoo]

Describe the bug

Xcode throws a warning for data race for statusCode property of HttpResponse as shown below.

This tracks the SIM ticket: /V1219649867.

Expected Behavior

No data race warning shown for properties of HttpResponse.

Current Behavior

Xcode shows a data race warning for statusCode property of HttpResponse.

Reproduction Steps

• Use Amplify Swift Package version 2.25.5
• Download application files from /V1219649867/communication.
• Enable Thread Sanitizer on Xcode to see it detect and show data race warning.

Possible Solution

Make HttpResponse an actor to make it thread-safe.

Additional Information/Context

No response

AWS SWIFT SDK version used

0.31.0

Compiler and Version used

Xcode 15.0

Operating System and version

MacOS

[sichanyoo]

From offline discussion: The PRs for this ticket will be put on-hold until deeper investigation is done by @jbelkins and @sichanyoo & it's confirmed all continuation code paths call resume() exactly once.

Also discussed: refactoring CRT HTTP client wrapper in SDK side might be a good follow-up task to this

[sichanyoo]

Ticket is raised on upstream (Amplify) as well: aws-amplify/amplify-swift#3708
Getting back on this ticket now.