tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_rcwn_interrupted.js (5339B)

      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.processAsync();
     52  response.setHeader("Content-Type", "text/plain");
     53  response.setHeader("ETag", "Just testing");
     54  response.setHeader("Cache-Control", "max-age=99999");
     55  response.setHeader("Accept-Ranges", "bytes");
     56  response.setHeader("Content-Length", "" + responseBody.length);
     57  if (metadata.hasHeader("If-Range")) {
     58    response.setStatusLine(metadata.httpVersion, 206, "Partial Content");
     59 
     60    let len = responseBody.length;
     61    response.setHeader("Content-Range", "0-" + (len - 1) + "/" + len);
     62  }
     63 
     64  do_timeout(500, () => {
     65    response.bodyOutputStream.write(responseBody, responseBody.length);
     66 
     67    response.finish();
     68  });
     69 }
     70 
     71 class CustomChannelListener extends ChannelListener {
     72  constructor(closure, ctx, flags) {
     73    super(closure, ctx, flags);
     74 
     75    this._onStartPromise = new Promise(resolve => {
     76      this._onStartResolve = resolve;
     77    });
     78  }
     79 
     80  onStartRequest(request) {
     81    this._onStartResolve();
     82 
     83    // Call the original ChannelListener's onStartRequest method
     84    if (typeof ChannelListener.prototype.onStartRequest === "function") {
     85      ChannelListener.prototype.onStartRequest.call(this, request);
     86    }
     87  }
     88 }
     89 
     90 function run_test() {
     91  // Static check
     92  Assert.greater(responseBody.length, 1024);
     93 
     94  do_get_profile();
     95 
     96  Services.prefs.setIntPref("browser.cache.disk.max_entry_size", 1);
     97  Services.prefs.setBoolPref("network.http.rcwn.enabled", false);
     98 
     99  httpServer = new HttpServer();
    100  httpServer.registerPathHandler("/content", contentHandler);
    101  httpServer.start(-1);
    102 
    103  httpProtocolHandler.EnsureHSTSDataReady().then(function () {
    104    var chan1 = make_channel(URL + "/content");
    105    let chan1listener = new CustomChannelListener(
    106      firstTimeThrough,
    107      null,
    108      CL_IGNORE_DELAYS
    109    );
    110    chan1listener._onStartPromise.then(() => {
    111      var chan2 = make_channel(URL + "/content");
    112      chan2
    113        .QueryInterface(Ci.nsIRaceCacheWithNetwork)
    114        .test_delayCacheEntryOpeningBy(200);
    115      chan2.QueryInterface(Ci.nsIRaceCacheWithNetwork).test_triggerNetwork(50);
    116      chan2.asyncOpen(
    117        new ChannelListener(secondTimeThrough, null, CL_IGNORE_DELAYS)
    118      );
    119    });
    120    chan1.asyncOpen(chan1listener);
    121  });
    122 
    123  do_test_pending();
    124 }
    125 
    126 function firstTimeThrough(request, buffer) {
    127  Assert.equal(buffer, responseBody);
    128 }
    129 
    130 function secondTimeThrough(request, buffer) {
    131  Assert.equal(buffer, responseBody);
    132  httpServer.stop(do_test_finished);
    133 }