Slides from my talk at Delex Conference 2020 about Chrome Developer Tools and Selenoid.

1. Chrome Developer Tools with Selenoid
by Ivan Krutov

2. About me
Java & Golang developer
Devops
Big Selenium cluster

3. Big Selenium Cluster
Typical Selenium Grid
50 browsers
10000 sessions / day
1 data center
5 rps
500 Kbit/s
Sometimes down
My cluster
5000+ browsers
2.5M sessions / day
5 data centers
4000 rps
> 2 Gbit/s
24/7/365

4. Big Selenium Cluster

5. Selenium Tools
Selenoid BrowsersMoon

6. Selenium has limitations

7. Some missing Selenium features
Direct DOM tree manipulation
Direct CSS style manipulation
Tracking network activities
Inspecting accessibility tree
Page tracing and profiling
Subscribing to page events

8. Chrome Developer Tools

9. Chrome Developer Tools Protocol
JSON over WS

10. CDP Request and Response
=> Request
{
"id":12345,
"method":"Page.captureScreenshot",
"params":{ }
}
<= Response
{
"id":12345,
"result":{ }
}

11. Basic Demo

12. Selenoid + Chrome Developer Tools
CDP
CDP
77.0
78.0
79.0
/devtools

13. More
Examples

14. Supported Browsers

15. One more powerful automation
standard?

16. CDP References
https://github.com/puppeteer/puppeteer
https://github.com/microsoft/playwright
https://chromedevtools.github.io/devtools-protocol/
https://github.com/ChromeDevTools/awesome-chrome-
devtools

17. Aerokube References
https://bit.ly/2GMVeBR
@aerokube
https://t.me/aerokube
https://aerokube.com/
https://bit.ly/2C2LstZ