CODEWITHSUNDEEP
performancefirefoxseleniumxmlhttprequesttiming
DustinA
DustinA

Reputation: 517

How do I get XHR/Ajax resource timing data from window.performance?

When I open the Firefox "network" tab in the developer tools, I'm able to see the timing data from all the requests my page is making, including application/json (XHR) calls. I want to be able to get this timing information programmatically.

In Selenium, I let my page load fully and then ask the window.performance.getEntries() method for all of the resources. It gives me back a ton, including CSS, javascript, etc, but I don't see the calls to our RESTful services that show up in the Firefox window as "json" requests.

Since Firefox shows them in its Network tab in the developer tools, is a way for me to get them programatically? Our app is an angular app that is not using iframes.

Upvotes: 2

Views: 1699

Answers (1)

DustinA
DustinA

Reputation: 517

I figured out my issue after a day of googling and trying different things. Thanks to this article I discovered that I needed to add Timing-Allow-Origin: * to the response header of all the services.

Once I did that, the timing information started to appear. It's apparently because the services are hosted at a different domain than my client. I don't understand the ramifications of leaving that header in there so I'll make sure it doesn't get deployed to production.

Upvotes: 1

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