iframe support for force instance id

[mayailurus]

@mantra-955

proxy_pass https://js71ztv2n90csd6708vnwyhkzh7p0w0x.fly.dev/;

Hm… It shouldn’t be necessary to bounce through .fly.dev like this…

To use Fly Replay, you can just reply (not proxy), and the Fly.io infrastructure will take care of the rest:

@bglw

For the app replaying /api/* requests to a dedicated API, you can now strip the /api prefix. When your app receives a request to /api/users/1, it can replay it as /users/1:

{
    "app": "example-api-app",
    "transform": {
        "path": "/users/1"
    }
}

(You can also specify a particular instance in there, if I’m reading the docs correctly.)

Or, if you want to continue with proxy_pass, then maybe post the error logs from when you had .internal. Possibly you were getting bitten by one of Nginx’s oft-mentioned DNS quirks.

Hope this helps a little!