Cypress invalid proxy certificate affects disk cache

Current behavior:

Information that certificate error is purely cosmetic problem as specified here docs.cypress.io/faq/questions/using-cypress-faq.html is misleading.

Chrome, as reported here bugs.chromium.org/p/chromium/issues/detail?id=110649 ignores http caching when any error with ssl certificate occurs. This means that the application under the test is affected and not behaving as intended (http caching is fully disabled, app load time can be significantly slower…).

Desired behavior:

1. Inform about this potential problem in FAQ
2. Maybe inform that this problem can be resolved by importing CypressProxyCA from cy/production/proxy/certs/ca.pem to the Trusted Root Certification Authority store

Test code to reproduce

https://github.com/jsantha/cypress-invalid-cert

Versions

Chrome from version ~16 to actual (81) Windows 10 Cypress 4.5.0

[jsantha]

@valter11111 I’ve just tried this workaround again for latest cypress version and it still works, follow these steps:

• import AppData/Roaming/Cypress/cy/production/proxy/certs/ca.pem
• restart chrome (check for no background chrome processes in task manager)
• run tests again and invalid cert warning should disappear

[valter11111]

I agree with the original post, this is not only the cosmetic problem. Chromium browsers also block webRTC access (media devices are disabled) if there is “Not secure” connection.

Using Cypress 7.3