tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Worker-messageport.js (1276B)

      1 onmessage = function(evt) {
      2    if (evt.data == "port") {
      3        if (evt.ports) {
      4            postMessage("PASS: Received message port");
      5            evt.ports[0].onmessage = pingBack;
      6            evt.ports[0].start();
      7        } else {
      8            postMessage("FAIL: Did not receive expected MessagePort");
      9        }
     10    } else if (evt.data == "noport") {
     11        if (!evt.ports || evt.ports.length) {
     12            postMessage("FAIL: Received message port or null ports array");
     13        } else {
     14            postMessage("PASS: evt.ports = [] as expected");
     15        }
     16    } else if (evt.data == "spam") {
     17        for (var i = 0 ; i < 1000 ; i++) {
     18            evt.ports[0].postMessage(i);
     19        }
     20        postMessage("spamDone");
     21    } else if (evt.data == "getport") {
     22        var channel = new MessageChannel();
     23        postMessage("port", [channel.port1]);
     24        channel.port2.onmessage = pingBack;
     25        channel.port2.start();
     26    } else {
     27        postMessage("Unknown message:" + evt.data);
     28    }
     29 
     30 }
     31 
     32 function pingBack(evt) {
     33    // Make sure we got the expected data and send a return message over
     34    // the port.
     35    if (evt.data == "ping") {
     36        evt.target.postMessage("pong");
     37    } else {
     38        postMessage("FAIL: unknown message: " + evt.data);
     39    }
     40 }