eagler-teavm-fork/tools/chrome-rdp/src/main/js/chrome/ping.js

28 lines
970 B
JavaScript

/*
* Copyright 2022 Alexey Andreev.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
function sendPing() {
chrome.runtime.sendMessage({ command: "ping" });
}
function listener(message) {
if (message.command === "pong") {
setTimeout(sendPing, 2000);
} else if (message.command === "quitPingPong") {
chrome.runtime.onMessage.removeListener(listener);
}
}
chrome.runtime.onMessage.addListener(listener);
sendPing();