chatclient.html Example File
simplechat/chatclient.html<html>
<head>
<title>WebSocket Chat Client</title>
</head>
<body>
<h1>WebSocket Chat Client</h1>
<p>
Host: <input id="webSocketHost" type="text" value="localhost:1234"/>
</p>
<p>
<button onClick="initWebSocket();">Connect</button>
<button id="disconnectButton" onClick="stopWebSocket();" disabled>Disconnect</button>
<button onClick="checkSocket();">State</button>
</p>
<p>
<textarea id="debugTextArea" style="width:400px;height:200px;" readonly></textarea>
</p>
<p>
<input type="text" id="inputNick" value="nickname" />
<input type="text" id="inputText" onkeydown="if(event.keyCode==13)sendMessage();"/>
<button id="sendButton" onClick="sendMessage();" disabled>Send</button>
</p>
<script type="text/javascript">
var debugTextArea = document.getElementById("debugTextArea");
function debug(message) {
debugTextArea.value += message + "\n";
debugTextArea.scrollTop = debugTextArea.scrollHeight;
}
function sendMessage() {
var nickname = document.getElementById("inputNick").value;
var msg = document.getElementById("inputText").value;
var strToSend = nickname + ": " + msg;
if ( websocket != null )
{
document.getElementById("inputText").value = "";
websocket.send( strToSend );
console.log( "string sent :", '"'+strToSend+'"' );
debug(strToSend);
}
}
var websocket = null;
function initWebSocket() {
try {
if (typeof MozWebSocket == 'function')
WebSocket = MozWebSocket;
if ( websocket && websocket.readyState == 1 )
websocket.close();
var wsUri = "ws://" + document.getElementById("webSocketHost").value;
websocket = new WebSocket( wsUri );
websocket.onopen = function (evt) {
debug("CONNECTED");
document.getElementById("disconnectButton").disabled = false;
document.getElementById("sendButton").disabled = false;
};
websocket.onclose = function (evt) {
debug("DISCONNECTED");
document.getElementById("disconnectButton").disabled = true;
document.getElementById("sendButton").disabled = true;
};
websocket.onmessage = function (evt) {
console.log( "Message received :", evt.data );
debug( evt.data );
};
websocket.onerror = function (evt) {
debug('ERROR: ' + evt.data);
};
} catch (exception) {
debug('ERROR: ' + exception);
}
}
function stopWebSocket() {
if (websocket)
websocket.close();
}
function checkSocket() {
if (websocket != null) {
var stateStr;
switch (websocket.readyState) {
case 0: {
stateStr = "CONNECTING";
break;
}
case 1: {
stateStr = "OPEN";
break;
}
case 2: {
stateStr = "CLOSING";
break;
}
case 3: {
stateStr = "CLOSED";
break;
}
default: {
stateStr = "UNKNOW";
break;
}
}
debug("WebSocket state = " + websocket.readyState + " ( " + stateStr + " )");
} else {
debug("WebSocket is null");
}
}
</script>
</body>
</html>© 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.