dom/base/test/send_gzip_content.sjs
author Nicholas Nethercote <nnethercote@mozilla.com>
Mon, 05 Oct 2015 16:59:32 -0700
changeset 301715 3897da20e42dec0bcf73987af1eaac4f8ce950b8
parent 238779 2db29c0ae60b6eb0e196165631127d195fe2ef0b
child 458031 dce5f1c884ccf014611a57328223cffa6f61910c
permissions -rw-r--r--
Bug 1211324 (part 3) - Remove GraphicsFilter::FILTER_FAST and replace it with FILTER_BEST. r=mattwoodrow. This may sound like an odd change but it's what the current code effectively already does due to the way ToFilter() and ThebesFilter() are defined.

const Cc = Components.classes;
const Ci = Components.interfaces;

function gzipCompressString(string, obs) {

  let scs = Cc["@mozilla.org/streamConverters;1"]
           .getService(Ci.nsIStreamConverterService);
  let listener = Cc["@mozilla.org/network/stream-loader;1"]
                .createInstance(Ci.nsIStreamLoader);
  listener.init(obs);
  let converter = scs.asyncConvertData("uncompressed", "gzip",
                                        listener, null);
  let stringStream = Cc["@mozilla.org/io/string-input-stream;1"]
                    .createInstance(Ci.nsIStringInputStream);
  stringStream.data = string;
  converter.onStartRequest(null, null);
  converter.onDataAvailable(null, null, stringStream, 0, string.length);
  converter.onStopRequest(null, null, null);
}

function produceData() {
  var chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()_+";
  var result = '';
  for (var i = 0; i < 100000; ++i) {
    result += chars;
  }
  return result;
}

function handleRequest(request, response)
{
  response.processAsync();

  // Generate data
  var strings_to_send = produceData();
  response.setHeader("Content-Type", "text/plain", false);
  response.setHeader("Content-Encoding", "gzip", false);

  let observer = {
    onStreamComplete: function(loader, context, status, length, result) {
      buffer = String.fromCharCode.apply(this, result);
      response.setHeader("Content-Length", ""+buffer.length, false);
      response.write(buffer);
      response.finish();
    }
  };
  gzipCompressString(strings_to_send, observer);
}