зеркало из https://github.com/mozilla/gecko-dev.git
79 строки
3.0 KiB
JavaScript
79 строки
3.0 KiB
JavaScript
function parseQuery(query, key) {
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for (let p of query.split('&')) {
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if (p == key) {
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return true;
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}
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if (p.startsWith(key + "=")) {
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return p.substring(key.length + 1);
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}
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}
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}
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// Return the first few bytes in a short byte range response. When Firefox
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// requests subsequent bytes in a second range request, respond with a
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// redirect. Requests after the first redirected are serviced as expected.
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function handleRequest(request, response)
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{
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var query = request.queryString;
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var resource = parseQuery(query, "resource");
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var type = parseQuery(query, "type") || "application/octet-stream";
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var redirected = parseQuery(query, "redirected") || false;
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var useCors = parseQuery(query, "cors") || false;
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var file = Components.classes["@mozilla.org/file/directory_service;1"].
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getService(Components.interfaces.nsIProperties).
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get("CurWorkD", Components.interfaces.nsIFile);
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var fis = Components.classes['@mozilla.org/network/file-input-stream;1'].
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createInstance(Components.interfaces.nsIFileInputStream);
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var bis = Components.classes["@mozilla.org/binaryinputstream;1"].
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createInstance(Components.interfaces.nsIBinaryInputStream);
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var paths = "tests/dom/media/test/" + resource;
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var split = paths.split("/");
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for (var i = 0; i < split.length; ++i) {
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file.append(split[i]);
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}
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fis.init(file, -1, -1, false);
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bis.setInputStream(fis);
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var bytes = bis.readBytes(bis.available());
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let [from, to] = request.getHeader("range").split("=")[1].split("-").map(s => parseInt(s));
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if (!redirected && from > 0) {
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var origin = request.host == "mochi.test" ? "example.org" : "mochi.test:8888";
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response.setStatusLine(request.httpVersion, 303, "See Other");
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let url = "http://" + origin +
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"/tests/dom/media/test/midflight-redirect.sjs?redirected&" + query;
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response.setHeader("Location", url);
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response.setHeader("Content-Type", "text/html");
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return;
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}
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if (isNaN(to)) {
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to = bytes.length - 1;
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}
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if (from == 0 && !redirected) {
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to = parseInt(parseQuery(query, "redirectAt")) || Math.floor(bytes.length / 4);
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}
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to = Math.min(to, bytes.length - 1);
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// Note: 'to' is the first index *excluded*, so we need (to + 1)
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// in the substring end here.
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byterange = bytes.substring(from, to + 1);
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let contentRange = "bytes " + from + "-" + to + "/" + bytes.length;
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let contentLength = byterange.length.toString();
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response.setStatusLine(request.httpVersion, 206, "Partial Content");
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response.setHeader("Content-Range", contentRange);
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response.setHeader("Content-Length", contentLength, false);
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response.setHeader("Content-Type", type, false);
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response.setHeader("Accept-Ranges", "bytes", false);
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response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
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if (redirected && useCors) {
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response.setHeader("Access-Control-Allow-Origin", "*");
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}
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response.write(byterange, byterange.length);
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bis.close();
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}
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