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How to get correct connectStart/End values of a proxied http request inside service worker? #1663

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xiaofud opened this issue Nov 25, 2022 · 0 comments
Open

How to get correct connectStart/End values of a proxied http request inside service worker? #1663

xiaofud opened this issue Nov 25, 2022 · 0 comments

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@xiaofud
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xiaofud commented Nov 25, 2022

Our website uses service worker to proxy http requests. When service worker is enabled, the connectStart and connectEnd values returned by window.performance API are always the same as workerStart. If we disable service worker, these values become correct, and we can then measure the DNS cost, TCP connection cost.

Image 1, service worker enabled:

image

Image 2, without service worker:
image

I find something useful in Chrome Dev Tool. How can I access this timing info in service worker?
image
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