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fix: handle missing vary header values #4031

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fix: handle missing vary header values #4031

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gurgunday
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fixes: #3959

github-advanced-security[bot]
github-advanced-security bot found potential problems Jan 27, 2025
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mcollina
mcollina reviewed Jan 28, 2025
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metcoder95
metcoder95 approved these changes Jan 28, 2025
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@gurgunday gurgunday requested a review from mcollina January 28, 2025 19:00
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@KhafraDev can you take a look as well?

This issue recently bit me too

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gurgunday commented Feb 1, 2025 •
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Cc @flakey5, just saw your PR but leaving it here if you want to merge this one

It fixes both the undercase problem and the cache issue

@gurgunday gurgunday requested a review from metcoder95 February 1, 2025 12:15
flakey5
flakey5 suggested changes Feb 2, 2025
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The issue looks to be still present when using the sqlite cache store?
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test/utils/cache.js Outdated
const assert = require('node:assert')
const { parseVaryHeader } = require('../../lib/util/cache.js')

describe('parseVaryHeader', () => {
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nit but could you move these to where the other tests are for this function?

undici/test/cache-interceptor/utils.js

Line 179 in a9176c9

describe('parseVaryHeader', () => {

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gurgunday commented Feb 2, 2025 •
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Yeah had to go back to null, it works better with JSON 😁

@gurgunday gurgunday requested a review from flakey5 February 2, 2025 19:44
@flakey5 flakey5 mentioned this pull request Feb 2, 2025
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@flakey5 flakey5 flakey5 approved these changes

@metcoder95 metcoder95 metcoder95 approved these changes

@mcollina mcollina Awaiting requested review from mcollina

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Response headers vary: Accept-Encoding is stopping undici from caching the http request
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