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aslushnikov avatar aslushnikov commented on April 27, 2024 10

Closing this since we're not going to invest into this in the near future.

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paulirish avatar paulirish commented on April 27, 2024

https://github.com/cyrus-and/chrome-har-capturer is well used. He is also adding a mode to create HAR from provided events.

https://w3c.github.io/web-performance/specs/HAR/Overview.html

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aslushnikov avatar aslushnikov commented on April 27, 2024

As I'm reading through Fetch API, it looks like it would be logical to use Response object to report responses. This would be also consistent with #26, and this would nicely allow us to use Response as a return value for page.navigate (as discussed in #10).

The request/response events would look like this:

page.on('request', request => console.log('>>' + request.url));
page.on('response', response => console.log('<<' + response.status + ' ' + response.url));

In this case, the "export as HAR" feature should be implemented separately.

@paulirish, @pavelfeldman - what do you guys think?

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paulirish avatar paulirish commented on April 27, 2024

Agree.

HAR does have tooling, but the spec is dated and doesn't have good ways to represent:

  • dns-prefetch
  • h2 push
  • stalled time and other non-sequential timings
  • data URIs
  • header compression
  • resource priority
  • initiators
  • streamid, ping packets, h2 connection settings, frame details

see also:

As such, it looks like we need an investment in the entire HAR ecosystem for us to make it first-class here.

cc @allada

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