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pandaCard
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test.html

<html>
<head>
<script>
var ws = null;
function connect() {
  if (ws !== null) return log('already connected');
  ws = new WebSocket('ws://127.0.0.1:8082/1.0/websocket');
  ws.onopen = function () {
    log('connected');
  };
  ws.onerror = function (error) {
    log(error);
  };
  ws.onmessage = function (e) {
    log('recv: ' + e.data);
  };
  ws.onclose = function () {
    log('disconnected');
    ws = null;
  };
  return false;
}
function disconnect() {
  if (ws === null) return log('already disconnected');
  ws.close();
  return false;
}
function send() {
  if (ws === null) return log('please connect first');
  var text = document.getElementById('text').value;
  document.getElementById('text').value = "";
  log('send: ' + text);
  ws.send(text);
  return false;
}
function log(text) {
  var li = document.createElement('li');
  li.appendChild(document.createTextNode(text));
  document.getElementById('log').appendChild(li);
  return false;
}
</script>
</head>
<body>
  <form onsubmit="return send();">
    <button type="button" onclick="return connect();">
      Connect
    </button>
    <button type="button" onclick="return disconnect();">
      Disconnect
    </button>
    <input id="text" type="text">
    <button type="submit">Send</button>
  </form>
  <ol id="log"></ol>
</body>
</html>