135 lines
3.5 KiB
HTML
135 lines
3.5 KiB
HTML
<!--
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<!DOCTYPE html>
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<html>
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<head>
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<title>Apache Tomcat WebSocket Examples: Echo</title>
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<style type="text/css">
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#connect-container {
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float: left;
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width: 400px
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}
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#connect-container div {
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padding: 5px;
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}
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#console-container {
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float: left;
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margin-left: 15px;
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width: 400px;
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}
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#console {
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border: 1px solid #CCCCCC;
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border-right-color: #999999;
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border-bottom-color: #999999;
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height: 170px;
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overflow-y: scroll;
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padding: 5px;
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width: 100%;
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}
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#console p {
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padding: 0;
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margin: 0;
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}
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</style>
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<script src="https://cdn.jsdelivr.net/sockjs/0.3.4/sockjs.min.js"></script>
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<script type="text/javascript">
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var ws = null;
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function setConnected(connected) {
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document.getElementById('connect').disabled = connected;
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document.getElementById('disconnect').disabled = !connected;
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document.getElementById('echo').disabled = !connected;
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}
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function connect() {
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var target = document.getElementById('target').value;
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ws = new SockJS(target);
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ws.onopen = function () {
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setConnected(true);
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log('Info: WebSocket connection opened.');
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};
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ws.onmessage = function (event) {
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log('Received: ' + event.data);
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};
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ws.onclose = function () {
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setConnected(false);
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log('Info: WebSocket connection closed.');
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};
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}
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function disconnect() {
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if (ws != null) {
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ws.close();
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ws = null;
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}
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setConnected(false);
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}
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function echo() {
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if (ws != null) {
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var message = document.getElementById('message').value;
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log('Sent: ' + message);
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ws.send(message);
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} else {
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alert('WebSocket connection not established, please connect.');
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}
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}
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function log(message) {
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var console = document.getElementById('console');
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var p = document.createElement('p');
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p.style.wordWrap = 'break-word';
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p.appendChild(document.createTextNode(message));
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console.appendChild(p);
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while (console.childNodes.length > 25) {
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console.removeChild(console.firstChild);
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}
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console.scrollTop = console.scrollHeight;
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}
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</script>
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</head>
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<body>
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<noscript><h2 style="color: #ff0000">Seems your browser doesn't support Javascript! Websockets rely on Javascript being enabled. Please enable
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Javascript and reload this page!</h2></noscript>
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<div>
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<div id="connect-container">
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<div>
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<input id="target" type="text" size="40" style="width: 350px" value="/echo"/>
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</div>
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<div>
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<button id="connect" onclick="connect();">Connect</button>
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<button id="disconnect" disabled="disabled" onclick="disconnect();">Disconnect</button>
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</div>
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<div>
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<textarea id="message" style="width: 350px">Here is a message!</textarea>
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</div>
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<div>
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<button id="echo" onclick="echo();" disabled="disabled">Echo message</button>
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</div>
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</div>
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<div id="console-container">
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<div id="console"></div>
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</div>
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</div>
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</body>
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</html>
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