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<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
var socket = null;
var isopen = false;
window.onload = function() {
socket = new WebSocket("ws://127.0.0.1:9000");
socket.binaryType = "arraybuffer";
socket.onopen = function() {
console.log("Connected!");
isopen = true;
}
socket.onmessage = function(e) {
if (typeof e.data == "string") {
console.log("Text message received: " + e.data);
} else {
var arr = new Uint8Array(e.data);
var hex = '';
for (var i = 0; i < arr.length; i++) {
hex += ('00' + arr[i].toString(16)).substr(-2);
}
console.log("Binary message received: " + hex);
}
}
socket.onclose = function(e) {
console.log("Connection closed.");
socket = null;
isopen = false;
}
};
function sendText() {
if (isopen) {
socket.send("Hello, world!");
console.log("Text message sent.");
} else {
console.log("Connection not opened.")
}
};
function sendBinary() {
if (isopen) {
var buf = new ArrayBuffer(32);
var arr = new Uint8Array(buf);
for (i = 0; i < arr.length; ++i) arr[i] = i;
socket.send(buf);
console.log("Binary message sent.");
} else {
console.log("Connection not opened.")
}
};
</script>
</head>
<body>
<p>Open your browser's JavaScript console to see what's happening (hit F12).</p>
<button onclick='sendText();'>Send Text Message</button>
<button onclick='sendBinary();'>Send Binary Message</button>
</body>
</html>
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