Allow marking rrweb as the top level even when in an iframe

[pauldambra]

if you have a page that you don't control which embeds your site in an iframe
and your site embeds another site in an iframe

so you have

• https:/one-domain
  • which embeds https://two-domain as an iframe
    • which itself embeds https://three-domain as an iframe

if https://two-domain was the top-level page we could support cross origin recording
but becaue it's an iframe we don't support it

this should need a change to rrweb but should be possible to support

see https://posthoghelp.zendesk.com/agent/tickets/12001

[pauldambra]

see also https://github.com/PostHog/rrweb/blob/posthog/packages/rrweb/src/record/index.ts#L95-L109

[ppsreejith]

Hey @pauldambra I think rrweb-io/rrweb#1726 should help solve this?

You can also add this as a patch quite easily to enable support in Posthog.

[pauldambra]

hey @ppsreejith looks good on a quick read
added a review on the rrweb PR

[ppsreejith]

Thank you! I'll take a look later today and reply on the rrweb PR thread from here on.