/**
* @param string $host
* @param int $port
* @param callable $handler
* @throws \Exception
*/
public function listen($host, $port, callable $handler)
{
// create a socket
$socket = socket_create(AF_INET, SOCK_STREAM, 0);
// bind the socket
if (!socket_bind($socket, $host, (int) $port)) {
throw new \Exception("Could not bind: {$host}:{$port} - " . socket_strerror(socket_last_error()));
}
while (1) {
// listen for connections
socket_listen($socket);
// try to get the client socket resource
// if false we got an error close the connection and continue
if (!($client = socket_accept($socket))) {
socket_close($client);
continue;
}
// create new request instance with the clients header.
// In the real world of course you cannot just fix the max size to 1024..
$contents = socket_read($client, 1024);
echo $contents;
// execute the callback
$response = call_user_func($handler, $this->requestFactory->fromSocketBody($contents));
// check if we really recived an Response object
// if not return a 404 response object
if (!$response || !$response instanceof ResponseInterface) {
$response = new NotFoundException();
}
// make a string out of our response
$responseBody = $this->responseSender->parseToSocketBody($response);
// write the response to the client socket
socket_write($client, $responseBody, strlen($responseBody));
// close the connetion so we can accept new ones
socket_close($client);
}
}
