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