third_party/WebKit/LayoutTests/http/tests/websocket/multiple-connections-throttled.html

   1 <!DOCTYPE HTML>
   2 <script src="/js-test-resources/js-test.js"></script>
   3 <script>
   4 description("Test that WebSocket connections are throttled.");
   5
   6 window.jsTestIsAsync = true;
   7
   8 var socketCount = 300;
   9 var openedCount = 0;
  10 var closedCount = 0;
  11
  12 // Expected behavior:
  13 // 1. A handshake to "ws://127.0.0.1:8880/delayed-handshake" is started.
  14 //    This stays pending for 1 second.
  15 // 2. Another 299 WebSockets to "ws://127.0.0.1:8880/echo" are created.
  16 //    45 connections are rejected by per-renderer WebSocket throttling,
  17 //    and 254 connections to "ws://127.0.0.1:8880/echo" stay pending.
  18 // 3. The handshake to "ws://127.0.0.1:8880/delayed-handshake"
  19 //    (started in Step 1) is completed.
  20 // 4. The handshakes of 254 connections to "ws://127.0.0.1:8880/echo"
  21 //    (created in Step 2) are started and are completed without delay.
  22
  23 for (i = 0; i < socketCount; ++i) {
  24     var ws = new WebSocket(i == 0 ?
  25                            "ws://127.0.0.1:8880/delayed-handshake" :
  26                            "ws://127.0.0.1:8880/echo");
  27
  28     ws.onopen = function(ws) {
  29         ++openedCount;
  30         ws.close();
  31     }.bind(undefined, ws);
  32
  33     ws.onclose = function() {
  34         ++closedCount;
  35         if (closedCount === socketCount) {
  36             shouldBeEqualToNumber("openedCount", 255);
  37             finishJSTest();
  38         }
  39     };
  40 }
  41 </script>