socket_read hang problem

gistfile1.php

if (false === ($socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
    $errorMessages[] = 'socket_create';
    $errorMessages[] = socket_strerror(socket_last_error());

    $errorCode = 1;
} else {
    $container = $this->getContainer();

    if (false === (socket_connect($socket, '174.37.69.2', '443'))) {
        $errorMessages[] = 'socket_connect';
        $errorMessages[] = socket_strerror(socket_last_error());

        $errorCode = 2;
    } else {
        if (false === socket_write($socket, 'WINFO', strlen('WINFO'))) {
            return false;
        } else {
            while ($receivedData = socket_read($socket, 1)) {
                echo $receivedData;
            }

            return $receivedData;
        }
    }
}