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[Serve] Fix HTTP headers #16647

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merged 1 commit into from
Jun 24, 2021

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simon-mo
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Why are these changes needed?

@nikitavemuri found a bug where multiple headers with the same key will override each other, for example, with

Set-Cookie a
Set-Cookie b

we will only send Set-Cookie b. This PR fixes the issue when we translate ASGI protocol to starlette response.

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  • I've run scripts/format.sh to lint the changes in this PR.
  • I've included any doc changes needed for https://docs.ray.io/en/master/.
  • I've made sure the tests are passing. Note that there might be a few flaky tests, see the recent failures at https://flakey-tests.ray.io/
  • Testing Strategy
    • Unit tests
    • Release tests
    • This PR is not tested :(

FastAPIApp.deploy()

resp = requests.get("http://localhost:8000/f")
assert resp.cookies.get_dict() == {"a": "b", "c": "d"}
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verified it failed without the fix

@edoakes edoakes merged commit aabdfe2 into ray-project:master Jun 24, 2021
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2 participants