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Alb multivalueheaders#272

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adrai merged 2 commits into
fastify:mainfrom
adrienblot:alb_multivalueheaders
Aug 25, 2025
Merged

Alb multivalueheaders#272
adrai merged 2 commits into
fastify:mainfrom
adrienblot:alb_multivalueheaders

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@adrienblot
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When using AWS ALB with multi-value headers enabled, the Lambda event payload does not include a headers property, and it ignores the headers property in the response payload.

This PR introduces a new configuration option: albMultiValueHeaders.

When enabled, all headers from the request’s multiValueHeaders property are passed through to the Fastify request object.

Likewise, all headers set in the Fastify response are added to the return payload’s multiValueHeaders as arrays.

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@adrai adrai merged commit c25a39d into fastify:main Aug 25, 2025
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adrai commented Aug 25, 2025

thank you... included in v6.1.0

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github-actions Bot commented May 1, 2026

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

@github-actions github-actions Bot locked as resolved and limited conversation to collaborators May 1, 2026
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