Skip to content

launch form: rotate meta_key with the salt on 409 so an edited retry is not stuck #3

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
kevincodex1 merged 1 commit into from
Sep 7, 2026
Merged

launch form: rotate meta_key with the salt on 409 so an edited retry is not stuck #3

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 9 additions & 3 deletions app/src/components/launchpad/LaunchForm.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -89,7 +89,10 @@ export default function LaunchForm({ ethUsd, initialChain = "base" }: { ethUsd:
const [customAddr, setCustomAddr] = useState("");
// Generated lazily at launch time (a render-time random value would break hydration).
const saltRef = useRef<Hex | null>(null);
const metaKeyRef = useRef<Hex | null>(null); // chosen once: the metadataURI is keyed by it, so findSalt can change the salt freely
// The metadataURI is keyed by meta_key, so findSalt can change the salt freely within one attempt. Both refs are
// kept across attempts so an identical retry is idempotent; when the details changed since the key was registered
// the server answers 409 and launch() rotates BOTH (a key is locked to the details it was first registered with).
const metaKeyRef = useRef<Hex | null>(null);
const [phase, setPhase] = useState<Phase>({ k: "idle" });

const presets = quote.key === "stock" ? stockMcapPresets(quote.usd ?? 0) : MCAP_PRESETS[quote.key];
Expand Down Expand Up @@ -122,7 +125,7 @@ export default function LaunchForm({ ethUsd, initialChain = "base" }: { ethUsd:
if (!valid || !address || !cfg.factory || startTick === null) return;
const FACTORY_ADDRESS = cfg.factory;
let salt = saltRef.current ?? (saltRef.current = randomSalt());
const metaKey = metaKeyRef.current ?? (metaKeyRef.current = randomSalt());
let metaKey = metaKeyRef.current ?? (metaKeyRef.current = randomSalt());
const register = async (s: Hex) => {
const res = await fetch("/api/launch/meta", {
method: "POST",
Expand All @@ -137,7 +140,10 @@ export default function LaunchForm({ ethUsd, initialChain = "base" }: { ethUsd:
setPhase({ k: "saving" });
let meta = await register(salt);
if (meta.status === 409) {
// this salt was registered before with different details (an earlier attempt): take a fresh one
// An earlier attempt registered this key (and salt) with different details, and a key is locked to the
// details it was first registered with: start a fresh attempt with a new key AND a new salt. The new key
// then stays fixed for the rest of this attempt, including the salt search below.
metaKey = metaKeyRef.current = randomSalt();
salt = saltRef.current = randomSalt();
meta = await register(salt);
}
Expand Down
Loading