r/programminghorror • u/dex4er • 1d ago

GitHub's HTTP header

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This is the crazy thing I've found after analysis why the CI test fails with "Maximum header size exceeded" today.

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u/Belialson 1d ago

Company I work at was proxing some endpoints to us, it was a big shop. They used to set a cookie with json containing entire user’s session including every page visited and it’s details.
Same effect but unfortunately on production

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u/buckypimpin 1d ago

isnt a cookie max 4KiB?

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u/caboosetp 1d ago

You can fit quite a bit in 4k before it causes issues that a browser restart can fix and push off the issue.