tor-browser

The Tor Browser
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test_cache2-29c-concurrent_read_half-interrupted.js (4380B)

      1 /*
      2 
      3 Checkes if the concurrent cache read/write works when the write is interrupted because of max-entry-size limits.
      4 This is enhancement of 29a test, this test checks that cocurrency is resumed when the first channel is interrupted
      5 in the middle of reading and the second channel already consumed some content from the cache entry.
      6 This test is using a resumable response.
      7 - with a profile, set max-entry-size to 1 (=1024 bytes)
      8 - first channel makes a request for a resumable response
      9 - second channel makes a request for the same resource, concurrent read happens
     10 - first channel sets predicted data size on the entry with every chunk, it's doomed on 1024
     11 - second channel now must engage interrupted concurrent write algorithm and read the rest of the content from the network
     12 - both channels must deliver full content w/o errors
     13 
     14 */
     15 
     16 "use strict";
     17 
     18 const { HttpServer } = ChromeUtils.importESModule(
     19  "resource://testing-common/httpd.sys.mjs"
     20 );
     21 
     22 var httpProtocolHandler = Cc[
     23  "@mozilla.org/network/protocol;1?name=http"
     24 ].getService(Ci.nsIHttpProtocolHandler);
     25 
     26 ChromeUtils.defineLazyGetter(this, "URL", function () {
     27  return "http://localhost:" + httpServer.identity.primaryPort;
     28 });
     29 
     30 var httpServer = null;
     31 
     32 function make_channel(url) {
     33  return NetUtil.newChannel({ uri: url, loadUsingSystemPrincipal: true });
     34 }
     35 
     36 // need something bigger than 1024 bytes
     37 const responseBody =
     38  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     39  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     40  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     41  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     42  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     43  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     44  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     45  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     46  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     47  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef" +
     48  "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef";
     49 
     50 function contentHandler(metadata, response) {
     51  response.setHeader("Content-Type", "text/plain");
     52  response.setHeader("ETag", "Just testing");
     53  response.setHeader("Cache-Control", "max-age=99999");
     54  response.setHeader("Accept-Ranges", "bytes");
     55  response.setHeader("Content-Length", "" + responseBody.length);
     56  if (metadata.hasHeader("If-Range")) {
     57    response.setStatusLine(metadata.httpVersion, 206, "Partial Content");
     58 
     59    let len = responseBody.length;
     60    response.setHeader("Content-Range", "0-" + (len - 1) + "/" + len);
     61  }
     62  response.bodyOutputStream.write(responseBody, responseBody.length);
     63 }
     64 
     65 function run_test() {
     66  // Static check
     67  Assert.greater(responseBody.length, 1024);
     68 
     69  do_get_profile();
     70 
     71  Services.prefs.setIntPref("browser.cache.disk.max_entry_size", 1);
     72  Services.prefs.setBoolPref("network.http.rcwn.enabled", false);
     73 
     74  httpServer = new HttpServer();
     75  httpServer.registerPathHandler("/content", contentHandler);
     76  httpServer.start(-1);
     77 
     78  httpProtocolHandler.EnsureHSTSDataReady().then(function () {
     79    var chan1 = make_channel(URL + "/content");
     80    chan1.asyncOpen(new ChannelListener(firstTimeThrough, null));
     81    var chan2 = make_channel(URL + "/content");
     82    chan2.asyncOpen(new ChannelListener(secondTimeThrough, null));
     83  });
     84 
     85  do_test_pending();
     86 }
     87 
     88 function firstTimeThrough(request, buffer) {
     89  Assert.equal(buffer, responseBody);
     90 }
     91 
     92 function secondTimeThrough(request, buffer) {
     93  Assert.equal(buffer, responseBody);
     94  httpServer.stop(do_test_finished);
     95 }