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Arweave Fallback #2024
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Arweave Fallback #2024
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| "use client"; | ||
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| import { useEffect } from "react"; | ||
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| const SW_PATH = "/arweave-fallback-sw.js"; | ||
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| export default function ArweaveFallbackSwRegistration() { | ||
| useEffect(() => { | ||
| if (typeof navigator === "undefined" || !("serviceWorker" in navigator)) { | ||
| return; | ||
| } | ||
| navigator.serviceWorker | ||
| .register(SW_PATH, { scope: "/" }) | ||
| .catch(() => {}); | ||
| }, []); | ||
| return null; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| const ARWEAVE_HOST = "arweave.net"; | ||
| const FALLBACK_HOST = "ar-io.net"; | ||
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| export function isArweaveUrl(url: string): boolean { | ||
| try { | ||
| const u = new URL(url); | ||
| const h = u.hostname.toLowerCase(); | ||
| return h === ARWEAVE_HOST || h === "www." + ARWEAVE_HOST; | ||
| } catch { | ||
| return false; | ||
| } | ||
| } | ||
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| export function getArweaveFallbackUrl(url: string): string | null { | ||
| if (!isArweaveUrl(url)) return null; | ||
| try { | ||
| const u = new URL(url); | ||
| u.hostname = FALLBACK_HOST; | ||
| u.host = FALLBACK_HOST + (u.port ? ":" + u.port : ""); | ||
| return u.toString(); | ||
| } catch { | ||
| return null; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| const FALLBACK_HOST = "ar-io.net"; | ||
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| self.addEventListener("fetch", (event) => { | ||
| const url = event.request.url; | ||
| if (!url.includes("arweave.net") || event.request.mode === "navigate") return; | ||
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prxt6529 marked this conversation as resolved.
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| event.respondWith( | ||
| (async () => { | ||
| const opts = { method: event.request.method, headers: event.request.headers, credentials: "omit" }; | ||
| let res = await fetch(event.request, opts).catch(() => null); | ||
| if (res?.ok) return res; | ||
| const fallback = url.replace(/^(https?:\/\/)([^/]+)/, `$1${FALLBACK_HOST}`); | ||
| res = await fetch(fallback, opts).catch(() => null); | ||
|
prxt6529 marked this conversation as resolved.
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| if (res?.ok) return res; | ||
| return res || new Response(null, { status: 502 }); | ||
| })() | ||
| ); | ||
| }); | ||
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