Tony D’Addeo on Warpcast

artlu pfp

feels: so fking defeated rn my old frames are half-dead on Warpcast with "couldn't be loaded" images, but appear 💯 fine on /recaster . I fight linkrot / decay with every fibre of my hacker soul, going back to my early training in writing code for the International Space Station (it's still up there in space orbit), to making an archival tool my first Farcaster project, to SassyHash which was built difficult-ly in order to be able to survive any attack and live forever

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Tony D’Addeo pfp

images don’t get cached, only proxied so we don’t expose users ips to 3parties even scrolling the feed most be something else related to the proxy like missing content type header that may be trivial to fix happy to look into it

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artlu pfp

proxy is my fren, wdym he's not forwarding my images? actually, if it's related to headers, I was on an early (working) version of frog 🐸 and maybe requirements evolved over time? idk 🤷 here's the gh https://github.com/artlu99/fartcaster-action and a video showing the user flow in warpcast vs recaster

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Tony D’Addeo pfp

thanks for sharing, the URL that frame embed was pointing to is now a 404 https://fartcaster-action.vercel.app/api/image&s=724507676c1e1d0d8f0e14b0e8021672b2b9b4e76b7569cfd8ce0e5d58cf5556 it probably works on recaster because recaster didn't scrape the frame until a later point if you re-cast this frame on WC it will work fine since the current image defined in the metatag is valid once a cast is made we don't rescrape the metatags as there's not an obvious scalable way—at what point do you re-scrape the embed URL for any particular cast? a nice devtool I've considered adding for devs is a quick way to manually trigger a rescrapping of the metadata for a cast though the limitation is this only let's you fix a specific cast which might not be useful if there are hundreds

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Tony D’Addeo pfp

stepping back the core problem is a framework generated a URL that then at somepoint (probably an upgrade that changed how rendered happened) became 404 which is unfortunate but not shocking given it was a very early version I think the idea that once you cast something the content of it doesn't change is reasonable and there's not an obvious problem with how Warpcast is caching anything

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Tony D’Addeo pfp

the best generalized solution I can think of for this is to expect Farcaster clients to take ownership of making sure images are live by downloading and hosting them themselves rather than relying on every frame server to be running and backwards compatible for ever this is what Warcpast does with an image directly embedded in a cast this is even a stronger version of caching, the reason we don't do this with frames is there's some fun things frame servers can do where they use a short cache policy and serve a dynamic image but maybe this is something that could be opted into with a flag that indicates you want full control over image serving

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artlu pfp

There's still a missing piece in my mental model. Can you help me understand better? Right now, the frame's entrypoint the image at is broken on warpcast/fine on recaster. If I cast again, it will work again. This is consistent with my mental model of how Warpcast caches cast content. Inside the user flow, there should be no caching, only proxying (?). These dynamic images get generated as part of an interactive flow. Why are they broken in Warpcast, and not broken elsewhere? Practical question 1 (on me to answer, not on you): if I upgrade frog, will my old cast magically get better? I am more interested in resurrecting the old cast than a fresh new one, tbh. That feels more credible, less bait-and-switchy. Practical question 2: will Frames V2 have similar dependencies and/or fragility that I can design around? It seems ... for the dynamic OG image displayed on the landing page, maybe yes maybe no? Inside the flow, no? because the interaction all happens in my own sandbox?

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