651f344247
Cloudflare CDN strips Content-Encoding: gzip from Worker responses even when
explicitly set, leaving browsers with raw gzip bytes they cannot parse as JSON.
Fix by piping .gz objects through DecompressionStream('gzip') inside the Worker
so the response body is always plain JSON — no Content-Encoding header needed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
44 lines
1.4 KiB
TypeScript
44 lines
1.4 KiB
TypeScript
interface Env {
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ACB_BUCKET: R2Bucket;
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}
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export const onRequest: PagesFunction<Env> = async (context) => {
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try {
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const url = new URL(context.request.url);
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// Strip the leading /r2/ prefix to get the R2 object key
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const key = url.pathname.replace(/^\/r2\//, '');
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if (!key) {
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return new Response('Not Found', { status: 404 });
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}
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if (!context.env.ACB_BUCKET) {
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return new Response('R2 binding not configured', { status: 503 });
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}
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const object = await context.env.ACB_BUCKET.get(key);
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if (!object) {
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return new Response('Not Found', { status: 404 });
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}
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const headers = new Headers();
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object.writeHttpMetadata(headers);
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headers.set('Cache-Control', 'public, max-age=60');
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headers.set('Access-Control-Allow-Origin', '*');
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// Cloudflare CDN strips Content-Encoding: gzip from Worker responses even
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// when we set it, causing browsers to receive raw gzip bytes as JSON.
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// Decompress .gz objects inside the Worker instead so the response body is
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// always plain, browser-parseable content (no Content-Encoding needed).
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if (key.endsWith('.gz')) {
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headers.delete('Content-Encoding');
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const decompressed = object.body.pipeThrough(new DecompressionStream('gzip'));
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return new Response(decompressed, { headers });
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}
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return new Response(object.body, { headers });
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} catch (err: unknown) {
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const msg = err instanceof Error ? err.message : String(err);
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return new Response(`Error: ${msg}`, { status: 500 });
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}
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};
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