RENDER()
{
	String raw = first(context->post["raw"], "today");
	String server_url = context->params["HTTP_HOST"]+context->params["DOCUMENT_URI"];
	<>
		<link rel="stylesheet" href='style.css'></link>
		<h1>
			<a href="index.uce">UCE Test</a>:
			WebSocket Test
		</h1>
		<form action="?" method="post">
			<div>
				<label></label>
				<input type="text" name="raw" value="<?= raw ?>"/>
			</div>
			<div>
				<input type="submit" value="Parse"/>
			</div>
		</form>
		<pre id="log"></pre>
		<script>
		const ws = new WebSocket('wss://<?= server_url ?>');
		const log_element = document.getElementById('log');
		log_element.append('Connecting to wss://<?= server_url ?>...' + "\n");
		ws.addEventListener('open', (event) => {
			log_element.append('Connection open' + "\n");
			ws.send('Hello, server!');
		});
		ws.addEventListener('message', (event) => {
			log_element.append('Message: ' + JSON.stringify(event.data) + "\n");
		});
		ws.addEventListener('close', (event) => {
			log_element.append('Connection closed' + "\n");
		});
		ws.addEventListener('error', (event) => {
			log_element.append('Error: ' + JSON.stringify(event) + "\n");
		});
		</script>
		<pre><?= var_dump(context->params) ?></pre>
	</>
}