V6 to V7 Migration working?

[mboudreau]

I was quite happy to least that V7 is backwards compatible with a V6 iframe child, which makes our upgrade process much easier with little to no chance of breaking our app.

However, when I tried to update the parent to V7 (leaving the child iframe as is as V6), nothing seemed to work. I can see the SYN handshake, but nothing actually happens after that and the connection is never established. The parent is always initialized first before the child. Our app is really simple too, only a few methods - the upgrade was really simple, update version in package.json and then just change the connectToChild function to connect and create the new WindowMessenger option with allowedOrigins set as * so we don't get any potential issues there for testing purposes.

It would be nice to give a full example of this working instead of just having tests for demonstration purposes and reproducability.

Cheers.

[Aaronius]

Hey @mboudreau, take a look at this and see if it helps you out: https://github.com/Aaronius/penpal-sandbox

[Aaronius]

Actually, that probably won't help you out as I don't demonstrate the backward compatibility in that repo. I don't have a demo of that anywhere at the moment, though I do have tests that you can run (npm run test or npm run test:watch):

https://github.com/Aaronius/penpal/blob/main/test/backwardCompatibility/connectionManagement.spec.ts

If you have your app in a public location, I'm happy to check it out and see if I can figure out what's going wrong. Also, have you enabled debugging on both the parent and child?