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jean-michelet
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Sep 22, 2026
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| const te = reply.getHeader('te') | ||
| if (te !== undefined && !isValidHttp2Te(te)) { |
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Why TE is not removed from HTTP/2 responses as well?
gurgunday
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Sep 22, 2026
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Isn't this a breaking change? |
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I would consider this a bug fix rather than a breaking change. HTTP/2-invalid headers are removed, and users relying on invalid trailers should fix their code. |
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Remove connection-specific headers forbidden by HTTP/2 before Fastify writes managed responses, including Web Response and stream paths. Also validate trailer metadata and contain deferred trailer errors so invalid application-supplied values cannot escape as uncaught exceptions.