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// This worker is meant to test range requests where the initial response
// synthesizes a 206 Partial Content response with leading bytes.
// Then the worker lets subsequent range requests fall back to network.
let initial = true;
function is_initial_request() {
const old = initial;
initial = false;
return old;
}
self.addEventListener('fetch', e => {
const url = new URL(e.request.url);
if (url.search.indexOf('VIDEO') == -1) {
// Fall back for non-video.
return;
}
// Synthesize the response to the first request.
if (is_initial_request()) {
// Consistent with fetch-access-control.py?VIDEO
const init = {
status: 206,
headers: {
"Accept-Ranges": "bytes",
"Content-Type": "video/webm",
"Content-Range": "bytes 0-1/44447",
"Content-Length": "2",
},
};
e.respondWith(new Response(new Uint8Array([0x1a, 0x45]), init));
return;
}
// Fall back for subsequent range requests.
});