function handleRequest(request, response) { var file = Components.classes["@mozilla.org/file/directory_service;1"]. getService(Components.interfaces.nsIProperties). get("CurWorkD", Components.interfaces.nsILocalFile); var fis = Components.classes['@mozilla.org/network/file-input-stream;1']. createInstance(Components.interfaces.nsIFileInputStream); var bis = Components.classes["@mozilla.org/binaryinputstream;1"]. createInstance(Components.interfaces.nsIBinaryInputStream); var paths = "tests/content/media/test/320x240.ogv"; 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()); response.setHeader("X-Content-Duration", "0.233", false); response.setHeader("Content-Length", ""+bytes.length, false); response.setHeader("Content-Type", "video/ogg", false); response.write(bytes, bytes.length); bis.close(); }