andyg2/readme.md

## readme.md

      
    Raw
  

              readme.md
            
          
    Running

Start in shell WebSocket server:
php -q websockets.php
Start in shell WebSocket client:
php -S 0.0.0.0:8000 websockets.html please use separated tab in terminal.
Test

Open in browser URL: http://0.0.0.0:8000/ you will see current timestamp updating

  
## websockets.html
<html>

<body>
  <div id="root"></div>
  <script>
    var host = 'ws://0.0.0.0:12345/websockets.php';
    var socket = new WebSocket(host);
    socket.onmessage = function (e) {
      document.getElementById('root').innerHTML = e.data;
    };
  </script>
</body>

</html>

## websockets.php
<?php
$address = '0.0.0.0';
$port = 12345;

// Create WebSocket.
$server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($server, $address, $port);
socket_listen($server);
$client = socket_accept($server);

// Send WebSocket handshake headers.
$request = socket_read($client, 5000);
preg_match('#Sec-WebSocket-Key: (.*)\r\n#', $request, $matches);

$key = base64_encode(pack(
  'H*',
  sha1($matches[1] . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')
));

$headers = "HTTP/1.1 101 Switching Protocols\r\n";
$headers .= "Upgrade: websocket\r\n";
$headers .= "Connection: Upgrade\r\n";
$headers .= "Sec-WebSocket-Version: 13\r\n";
$headers .= "Sec-WebSocket-Accept: $key\r\n\r\n";
socket_write($client, $headers, strlen($headers));

// Send messages into WebSocket in a loop.
while (true) {
  sleep(1);
  $content = 'Now: ' . time();
  $response = chr(129) . chr(strlen($content)) . $content;
  socket_write($client, $response);
}
	<html>

	<body>
	<div id="root"></div>
	<script>
	var host = 'ws://0.0.0.0:12345/websockets.php';
	var socket = new WebSocket(host);
	socket.onmessage = function (e) {
	document.getElementById('root').innerHTML = e.data;
	};
	</script>
	</body>

	</html>
	<?php
	$address = '0.0.0.0';
	$port = 12345;

	// Create WebSocket.
	$server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
	socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1);
	socket_bind($server, $address, $port);
	socket_listen($server);
	$client = socket_accept($server);

	// Send WebSocket handshake headers.
	$request = socket_read($client, 5000);
	preg_match('#Sec-WebSocket-Key: (.*)\r\n#', $request, $matches);

	$key = base64_encode(pack(
	'H*',
	sha1($matches[1] . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')
	));

	$headers = "HTTP/1.1 101 Switching Protocols\r\n";
	$headers .= "Upgrade: websocket\r\n";
	$headers .= "Connection: Upgrade\r\n";
	$headers .= "Sec-WebSocket-Version: 13\r\n";
	$headers .= "Sec-WebSocket-Accept: $key\r\n\r\n";
	socket_write($client, $headers, strlen($headers));

	// Send messages into WebSocket in a loop.
	while (true) {
	sleep(1);
	$content = 'Now: ' . time();
	$response = chr(129) . chr(strlen($content)) . $content;
	socket_write($client, $response);
	}