fix(elbv2): boolean ALB attributes not reflected in CloudFormation when set to false#37307
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syukawa-gh wants to merge 2 commits intoaws:mainfrom
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fix(elbv2): boolean ALB attributes not reflected in CloudFormation when set to false#37307syukawa-gh wants to merge 2 commits intoaws:mainfrom
syukawa-gh wants to merge 2 commits intoaws:mainfrom
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…en set to false When boolean ALB properties like dropInvalidHeaderFields, preserveHostHeader, xAmznTlsVersionAndCipherSuiteHeaders, preserveXffClientPort, and wafFailOpen were explicitly set to false, they were omitted from the CloudFormation template because the code used truthy checks (if (props.x)) instead of undefined checks (if (props.x !== undefined)). This meant changing these properties from true to false would not update the ALB configuration. Now all boolean ALB attributes use !== undefined checks and emit both 'true' and 'false' values, consistent with how http2Enabled was already handled. Closes aws#36409
aws-cdk-automation
previously requested changes
Mar 23, 2026
✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.
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Closing in favor of #37485 (same change, updated version) |
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Comments on closed issues and PRs are hard for our team to see. |
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When boolean ALB properties like
dropInvalidHeaderFields,preserveHostHeader,xAmznTlsVersionAndCipherSuiteHeaders,preserveXffClientPort, andwafFailOpenwere explicitly set tofalse, they were omitted from the CloudFormation template. This is because the code used truthy checks (if (props.x)) instead of undefined checks (if (props.x !== undefined)), so changing these fromtruetofalsewould not update the ALB.All five boolean ALB attributes now use
!== undefinedchecks and emit bothtrueandfalsevalues, consistent with howhttp2Enabledwas already handled.Closes #36409