src/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/postmessage-msgport-to-client-worker.js

   1 self.onmessage = function(e) {
   2     self.clients.getServiced().then(function(clients) {
   3         clients.forEach(function(client) {
   4             var messageChannel = new MessageChannel();
   5             messageChannel.port1.onmessage = onMessageViaMessagePort.bind(null, client);
   6             client.postMessage({port: messageChannel.port2}, [messageChannel.port2]);
   7         });
   8     });
   9 };
  10
  11 function onMessageViaMessagePort(client, e) {
  12     var message = e.data;
  13     if ('value' in message) {
  14         client.postMessage({ack: 'Acking value: ' + message.value});
  15     } else if ('done' in message) {
  16         client.postMessage({done: true});
  17     }
  18 }